CN110306726A - Composite structure and preparation method thereof - Google Patents

Composite structure and preparation method thereof Download PDF

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Publication number
CN110306726A
CN110306726A CN201910240997.0A CN201910240997A CN110306726A CN 110306726 A CN110306726 A CN 110306726A CN 201910240997 A CN201910240997 A CN 201910240997A CN 110306726 A CN110306726 A CN 110306726A
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China
Prior art keywords
cavity
materials
pressure
composite
boundary
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CN201910240997.0A
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Chinese (zh)
Inventor
王哲
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王哲
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Priority to CN2018102548803 priority Critical
Priority to CN201810254880 priority
Application filed by 王哲 filed Critical 王哲
Publication of CN110306726A publication Critical patent/CN110306726A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/84Walls made by casting, pouring, or tamping in situ
    • E04B2/86Walls made by casting, pouring, or tamping in situ made in permanent forms
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/30Columns; Pillars; Struts
    • E04C3/34Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/02Conveying or working-up concrete or similar masses able to be heaped or cast

Abstract

A kind of high-bearing capacity composite structure, including part A and part B.Part A has cavity, and part B is the curable material of filling in the cavities, the effect being under pressure in process of setting.Part B includes the part B1 and the part B2, and B1 material is cement-based material, and B2 material is curable material, and B2 material ratio B1 material has opposite high fluidity.It is provided with built-in or/and external volume compensation device.When B1 and/or B2 material undergoing shrinkage and when B2 material has mobility, built-in volume compensation device is expanded, alternatively, external volume compensation device squeezes into flowing, semifluid curable material or solid material to the B2 material area of cavity inside.Volume compensation device, which is filled up, shrinks the volume of falling, and maintains the pressure of cavity inside B2 material, and then maintain the pressure of B1 material.Preferably, the arrival that the flowable time of B2 material is greater than B1 material is shunk the time of turning point, the time shrinking turning point occur of the time that pressure maintains at least over B1 material.

Description

Composite structure and preparation method thereof
Technical field
The present invention relates to buildings, bridge field, and in particular to composite structure and preparation method thereof.
Background technique
Concrete in steel tube-concrete composite structure can be shunk, this meeting between concrete and steel pipe inner wall so that divide From influencing collaborative work between the two, and then influence the mechanical property of composite structure.
In the prior art, solving this problem has two major classes method, and the first kind is to change the contraction spy of concrete material Property, shrinkage is reduced as far as possible, or material is allowed to expand.This type method is unrelated to the invention, does not repeat them here.
Second class method be in concrete filling to steel pipe after, to application pressure.Apply stressed method and have with Lower two kinds.
The first pressure method is that tubule, this pipe and steel pipe are installed near the steel tube end part of composite structure Except pressurizing device be connected, pressurizing device applies pressure to the concrete of thin tube interior, when concrete has enough intensity Tubule containing concrete is amputated later.At concrete in flow regime, if steel duct concrete is shunk, Concrete in tubule can be squeezed into steel duct by pressurizing device, fill up the volume that concrete shrinkage is fallen.But work as concrete After intensity, the concrete in steel pipe can also be shunk, and since concrete cannot flow, the concrete in tubule can not be into Enter steel duct to go to fill up the retraction volume of concrete;This will cause steel pipe to be applied to the pressure reduction on concrete side, very It is separated to also will cause concrete with steel pipe internal-surface.
Second of pressure method is: the steel pipe of composite structure has two sections, and the thick section of a section is thin, and thick covers in thin outside. After steel casing pack complete concrete, two section steel pipes are nested together, with press machine axially they apply pressure, two sections Opposite sliding axially occurs for pipe, and then is also applied with pressure to the concrete in steel pipe.After pressure reaches requirement, Two section steel pipes are linked together, they cannot be relatively moved.There is also deficiencies for this method.Concrete is before curing Volume contraction all occurs later with solidification.After two section steel pipes are fixed together, concrete is also being shunk always, and concrete is received The tangential stretching strain of steel pipe reduces therewith when contracting, and the pressure that steel pipe is applied to concrete side can also reduce therewith or even coagulation Soil can be separated with steel pipe internal-surface.
The third pressure method is all arranged at the both ends of steel pipe | " piston ", " piston " can be in steel ducts along axis To movement.When the concrete to steel duct squeezes, two " piston " is squeezed with loading device, " piston " moves towards Squeeze the concrete in steel pipe.The pressure being applied on piston is maintained, until concrete reaches some strength.This method exists The problem of be that, if the draw ratio (length-to-diameter) of steel pipe is longer, technical effect is not so good.For example, taking draw ratio It is just " living to both ends after concrete filling is into steel pipe for 7 (bigger than this numerical value in most cases in Practical Project) Plug " applies a constant force, until concrete reaches enough intensity.After solidification due to concrete, or even it is certain having Intensity after, it also occur that shrink, and the intensity at this moment having due to concrete and its bonding between steel pipe inner wall The pressure of piston can be offset or be cut down to power and frictional force, so that the axial compression stress of the concrete in the middle part of length of steel pipe direction It is less than the axial compression stress at both ends, draw ratio is bigger, and the axial compression stress of concrete is smaller in the middle part of steel pipe.In the middle part of length direction The radial compressive stress of concrete can also reduce with the contraction of concrete, if diameter of steel tube is larger, or even there is also The disengaging of concrete and steel pipe.
Summary of the invention
(1) technical problems to be solved
Cement is during condensing hardening, it may occur that chemical shrinkage, that is, before the absolute volume after aquation is less than aquation Water and other the sum of volumes of various composition for participating in aquation.In steel tube-concrete composite structure, the concrete of steel duct Volume contraction, often will lead to concrete and steel pipe inner wall cannot come into full contact with, or even cause to separate, this makes steel pipe and mixed Solidifying soil cannot cooperate well.High-strength concrete, super high strength concrete and Reactive Powder Concrete, due to water therein Mud and active spike are more, and volume shrinkage mass is bigger in hardening process, and steel pipe cannot cooperate the even more serious of performance therewith.
The intensity of Behavior of Hardened Cement Paste is related with the gap in Behavior of Hardened Cement Paste, and gap is fewer, and intensity is higher.In cement setting hardening process In, it allows cement sufficiently to shrink or be facilitated to reduce the gap in Behavior of Hardened Cement Paste by compression, improves the intensity of Behavior of Hardened Cement Paste.Cement mortar, The intensity of concrete is all related with the intensity of Behavior of Hardened Cement Paste therein, and the intensity of Behavior of Hardened Cement Paste is higher, and the intensity of respective material is also higher. Basis material is the mixture of cement, silicon ash, silica flour etc. with water in Reactive Powder Concrete, although the product after aquation with The ingredient of traditional Behavior of Hardened Cement Paste is different, but its intensity is equally related to void content therein, and gap is lower, and intensity is higher.
Behavior of Hardened Cement Paste, cement mortar, concrete, the axial strength of Reactive Powder Concrete are all related with its lateral compression, Lateral compression is bigger, and intensity is higher.
The problem to be solved in the present invention is: (1) improving the uniaxial compressive strength of cement-based material in composite structure;(2) it mentions The triaxial strength of high cement-based material, including improve lateral pressure and internal friction angle;(3) improve cement-based material and steel pipe inner wall it Between shear resistance, so that cement-based material can fully be cooperated with steel pipe.Technology path is, for being similar to steel The composite structure of pipe concrete applies hydrostatic pressure to cement-based material after cement-based material is fully populated with cavity.For The effect that has obtained, applies that the time that the process of hydrostatic pressure starts is early as much as possible, and duration will be as much as possible It is long, in addition, the pressure applied also wants as large as possible.
(2) technical solution
To achieve the goals above, the invention proposes technical solutions below.
A kind of composite structure, including part A and part B;Wherein, the part A is surrounded by cavity, the part B filling In the cavity, and the part B includes the part B1 and the part B2.
Further, the part B2 is at least filled in the space between the part B1 and part A, and/or filling In the space that the encirclement of the part B1 or part are surrounded.
Further, the composite structure at least meets one of:
At least a part of boundary in the part B2 is directly contacted with the inner wall of part A;
At least a part of boundary in the part B1 is directly contacted with the inner wall of part A;
At least part boundary of the part B1 is directly contacted at least part boundary of the part B2;
At least part boundary of the part B1 and at least part boundary isolated device of the part B2 separate.
Further, the composite structure further includes layer material, for by least part boundary of the part B2 It is separated with the inner wall of the part A, and/or, by the inner wall of at least part boundary of the part B1 and the part A point It opens;The layer material includes the extension of the isolating device of slow setting antifriction layer or stratiform.
Further, the B1 some materials and B2 some materials are curable material;In the B1 some materials and During B2 some materials are filled to the cavity, B1 the and B2 some materials are flowable state;It is complete having crossed filling At a certain moment later, B1 the and B2 some materials are curdled appearance, and process of setting is completed in the cavity inside.
Further, after the B1 some materials and B2 some materials all solidify, also by compressive pre-stress or residual The effect of compressive pre-stress;
The meaning of the residual compressive pre-stress refers to, after B1 and B2 some materials all solidify, the part B1 and/or B2 material Material is it also occur that shrink, at this moment compressive pre-stress original in material can become smaller, and the compressive pre-stress after becoming smaller is exactly the residual Compressive pre-stress.
Further, in flowable state phase, one of them time at the material of the part B1 and/or B2 Section or multiple periods or full stage, B1 the and B2 some materials are all by the effect of compressive pre-stress;And/or
In the process of setting of the B1 and/or B2 some materials, one of them period or multiple periods, Or the full stage, effect of the B1 and B2 some materials all by compressive pre-stress or residual compressive pre-stress.
Further, the composite structure further includes built-in volume compensation device, which is located at the cavity inside, For applying compressive pre-stress to B1 the and/or B2 material in cavity;When the volume of the part B1 and/or the part B2 becomes When change, the built-in volume compensation device can also change correspondingly the volume of itself, the part compensation B1 and/or the part B2 Volume change.
Further, the built-in volume compensation device is,
Air bag is built within cavity, is surrounded by B2 and/or B1 material;And/or
Liquid capsule is built within cavity, is surrounded by B2 and/or B1 material;
Preferably, the air bag or liquid capsule are surrounded by B2 material.
Further, after B1 the and B2 material reaches a predetermined strength,
If the built-in volume compensation device is air bag, compressed gas therein is exhausted, being filled with into air bag can Solidification material;
If the built-in volume compensation device is liquid capsule, liquid therein is exhausted, is filled with solidifiable material thereto Material.
Further, the composite structure further includes pressurizing piston;The pressurizing piston is matched with piston hole, institute It states piston hole to be arranged on the part A, sealing ring is provided in hole, pressurizing piston is mounted in piston hole, and piston wherein can Enough slidings;If pressurizing piston is inserted into the region of the part B1 and/or B2 in cavity, the B1 in piston press cavity And/or B2 material, make its pressure rise;Pressurizing piston is the device for applying compressive pre-stress to B1 the and/or B2 material in cavity.
Further, after B1 the and B2 material in cavity reaches a predetermined strength, pressurizing piston is removed;It is preferred that Ground, the directly exposed parts from the sawed-off piston rod in root.
Further, section where the upper limit of the compressive pre-stress applied to the part B2 in the cavity and/or B1 are as follows: 0.1 ~7MPa or 7~15MPa or 15~30MPa or 30~60MPa or 60~90MPa or 90~120MPa, or be greater than 120MPa。
Further, the part A is solid material;Preferably, the solid material includes metal material, macromolecule material Material, inorganic non-metallic material, fibrous composite, laminate.
Further, the part B1 is cement-based material;Preferably, the part B1 is Behavior of Hardened Cement Paste, cement mortar, contains The concrete of coarse aggregate, Reactive Powder Concrete, fiber cement mortar, fiber concrete, fiber-reactive powder concrete.
Further, the B2 some materials include following one or combinations thereof:
Cement-based material, high molecular material, high molecular material and cement-based material mixture;Preferably, slow setting cement Sill, slow setting high molecular material, slow setting high molecular material and cement-based material mixing, high molecular material and slow setting cement base The mixture of material, the mixture of slow setting high molecular material and inorganic non-metallic curable material, slow setting high molecular material and not Participate in the solid particle mixture of chemical reaction;
The slow setting cement sill includes following one or combinations thereof, added with retarder in every kind: common coagulation Soil, pea gravel concreten, Reactive Powder Concrete, mortar, the net paddle of cement, the mixture of silica flour, cement and water, silica flour, work The mixture of property spike, cement and water;
The activity spike includes one of or combinations thereof: silicon ash, flyash, granulated blast-furnace slag.
Further, the composite structure further includes isolating device, is located in the cavity;Isolating device is in institute It states between the part B1 and the part B2;It has a common boundary between the part B1 and B2 and/or isolated device separates.
Further, the isolating device is tubular structure open at one end or both ends open.
Further, the composite structure further includes the fixation device of the isolating device, be located at the isolating device with Between the part A.
Further, the part A includes pipe and the lower plugging plate and upper plugging plate that connect with the pipe.
Further, the composite structure has an axis, using the axis as the cross of the composite structure of normal Section is one of following four, I type section, II type section, type III section, IV type section.
Further, on the I type cross section, the region of B1 material is simply connected region, the whole in the regional edge boundary line Or the overwhelming majority is also the inner edge boundary line of B2 material area, or with B2 inner edge boundary line only across one layer of isolating device;Transversal On face, B2 material area is between the part B1 and part A.
Further, on II type section, the part B2 is simply connected region, the whole of the boundary line in the region B2 or big absolutely Part is the inner edge boundary line in the region B1, or with B1 inner edge boundary line only across one layer of isolating device;B1 material area is in B2 material Expect between region and a-quadrant;
Preferably, slow setting antifriction layer is provided between part A and B1 material.
Further, the nucleus on the type III section is simply connected region, fills B21 material;On section Certain border overlays of the whole on the boundary of B21 material area or the overwhelming majority and B1 material area, or therewith across one layer every From device;The whole or the overwhelming majority of the outer boundary of B1 material area are surrounded by B22 material area, B1 material area and B22 Material area directly contacts, or there are an isolating devices therebetween;B22 material area is in B1 material area and the portion A Between subregion;
Preferably, B21 material and B22 material are same materials.
Further, the region of the region of the part B1 and the part B22 is annular region.
Further, in entire composite structure, three-dimensional spatial area corresponding with the part B21, and with the part B22 Corresponding three-dimensional spatial area is connection or only across layer material on certain sections.
Further, the whole region in the upper plenum of IV type section is divided into two regions B1 and B2, two regions Difference all contacted with the inner wall of part A have a common boundary between a layer material, the region B1 and B2 therewith or by every It is separated from device.
Further, have under three axis compression chord states at the time of static shearing strength from the B1 some materials and open Until the cement to begin into the B1 some materials completes the aquation moment, a period is at least deposited in this time range, B21 the and B22 some materials have opposite high fluidity than the B1 some materials.
Further, just there is under three axis compression chord states this of static shearing strength from the B1 some materials Moment at least has one until the hydrated cementitious into the B1 some materials completes the moment in this time range A period, B2 some materials ratio B1 some materials have opposite high fluidity.
Further, the composite structure further includes slow setting antifriction layer, setting the part the B1 and the part A it Between, for weakening or eliminating the shear stress on the two interface;Preferably, at the time of slow setting antifriction layer loses flowability, it is later than B1 At the time of the contraction turning point of material occurs,
Further, the composite structure is compression member, is curve including column structure, axis that axis is straight line Domes;Preferably, the section of the column structure is round, ellipse, polygon.
Further, after completing, the composite structure is processed again, is made into another structure Part.
Further, after compression member completes, one or two end plate is laid down, or removes wherein the one of pipe Part is processed into another component.
Further, the shape of the composite structure is hexahedron or cube;The hexahedron or cube are used for group Dress up pillar or wall.
A kind of production method of composite structure, comprising:
Production is surrounded by the part A of cavity;
Part B is filled in the cavity and applies pressure, comprising: the part B1 and the part B2 are filled into the cavity In, pressure is applied to the part the B1 and/or B2.
Further, the B2 is partially filled in the space between the part B1 and part A;The portion B2 and/or Divide and is filled in by space that the part B1 surrounds or that part surrounds.
Further, at least a part of boundary in the part B2 is directly contacted with the inner wall of part A,
At least a part of boundary in the part B1 is directly contacted with the inner wall of part A,
At least part boundary of the part B1 is directly contacted at least part boundary of the part B2,
At least part boundary of the part B1 and at least part boundary isolated device of the part B2 separate.
Further, the inner wall of at least part boundary of the part B2 and the part A is divided using layer material It opens, and/or, the inner wall at least part boundary of the part B1 and the part A is separated;The layer material includes The extension of the isolating device of slow setting antifriction layer or stratiform.
Further, when B2 material has mobility, if applying pressure to the part B2, the part B2 will Pressure is transferred to the part B1;And/or when B1 material has mobility, if apply pressure to the part B1, institute It states the part B1 and pressure is transferred to the part B2.
Further, the part A is solid material, and the part B is curable material.
Further, the part B1 is inorganic non-metallic curable material.
Further, the part B1 is cement-based material;The cement-based material refers to containing cement and is solidifying It is accompanied by the material of hydrated cementitious in the process.
Further, the material of the part B2 includes at least one of following material:
Cement-based material, high molecular material, high molecular material and cement-based material mixture;Preferably, slow setting cement Sill, slow setting high molecular material, slow setting high molecular material and cement-based material mixing, high molecular material and slow setting cement base The mixture of material, the mixture of slow setting high molecular material and inorganic non-metallic curable material, slow setting high molecular material and not Participate in the solid particle mixture of chemical reaction;
Further, during filling in the cavity surrounded to the part A, B1 the and B2 some materials are in Flow regime;The a certain moment after filling is completed is spent, they start to solidify in the cavity.
Further, the part A of the composite structure is tubular structure, and it is horizontal that the length of axis direction is greater than tubular structure The distance between any two o'clock on section;Preferably, the tubular structure for having axis is following one: cylindrical drum, prism cylinder, Frustum cone cylinder, terrace with edge cylinder and their combination.
Further, the composite structure is compression member, is curve including column structure, axis that axis is straight line Domes.
Further, the composite structure is polyhedron, for the structure of assembled complicated shape.
Further, production is surrounded by the part A of cavity, comprising:
Pipe, lower plugging plate and upper plugging plate are provided;
The lower plugging plate is connected to the pipe lower end, and the upper plugging plate is connected to the pipe upper end, The production of the part A of cavity is surrounded by described in completion;
Preferably, the pipe is steel pipe.
Further, before the lower plugging plate is connected to the pipe lower end, and/or, by the upper plugging plate It is connected to before the pipe upper end, further includes: install isolating device to the pipe.
Further, the isolating device is following one:
The penetrating tubular structure in both ends, both ends do not have any shelter;
The closed at one end, other end does not have the tubular structure of any shelter;
Tubular structure closed at one end, the other end has partial occlusion, but there are openings.
Further, the isolating device is following one:
It is made of plate fluid-tight, with certain rigidity, the material of plate is metal, high molecular material or composite wood Material etc.;
It is made of plate fluid-tight, with certain rigidity, cavity is provided on plate or gap, the material of plate are Metal, high molecular material or composite material;
It is made of fluid-tight fexible film;
It is made of permeable flexible knitting object;
It is made of Web materials permeable, with certain rigidity;
It is made jointly of the Web materials with certain rigidity with fluid-tight fexible film or permeable flexible knitting object; Web materials do skeleton, and film or braided fabric are fixed on Web materials.
Further, the cross section of the isolating device is ripple type.
Further, since the part B1, the part B2 are filled to the cavity, to the intensity of the B1 some materials Until reaching final strength, B2 some materials described in a period of time or multi-section time in this process or whole process There is opposite high fluidity than the B1 some materials.
Further, after the part B1, B2 some materials are filled to the cavity, have from the B1 some materials There is static shearing strength to start, until its static state shearing strength reaches an intermediate intensity, the B2 some materials are than the B1 Some materials have opposite high fluidity;The intermediate intensity be final static strength 10% or 20% or 30% or 40% or 50% or 60% or 70% or 80% or 90% or 95% or 98%.
Further, after the part B1, B2 some materials are filled to the cavity, just had from B1 some materials Static shearing strength starts, until volume contraction turning point occurs, at least part B2 some materials ratio B1 in this process Material has opposite high fluidity;Alternatively,
After the part B1, B2 some materials are filled to the cavity, have static shearing resistance strong from B1 some materials Degree starts, until the moment after the appearance of volume contraction turning point, at least portion B2 some materials ratio B1 in this process Divide material that there is opposite high fluidity;The moment shunk after turning point occurs is determined by a time ratios, is somebody's turn to do Ratio is the age of B1 material when reaching the age of B1 some materials described in the moment and reaching the volume contraction turning point The ratio between phase;The ratio be equal to 1.25 or 1.5 or 1.75 or 2.0 or 2.5 or 3 or 4 or 5 or 10 or 15 or 20 or 30 or 40 or 50 or 75 or 100.
Further, before the part B1 and B2 some materials are filled in the cavity, further includes:
The part B1 and B2 some materials are provided, the B2 some materials in cavity are later than at the time of starting to lose flowability At the time of the B1 some materials in cavity start to lose flowability.
Further, before the part B1 and B2 some materials are filled in the cavity, further includes:
The part B1 and B2 some materials are provided, the flowable time spans of the B2 some materials be greater than B1 some materials from Mixing, which is accomplished to, shrinks length this period that turning point occurs;The mixing completion refers to that all the components of B1 material all mix Together and stir evenly.
Further, before the part B1 and B2 some materials are filled in the cavity, further includes:
The part B1 and B2 some materials are provided, the B2 some materials in cavity are later than at the time of starting to lose flowability At the time of the contraction turning point of the B1 some materials in cavity occurs.
Further, before the part B1 and B2 some materials are filled in the cavity, further includes:
The part B1 and B2 some materials are provided, after the part B1 is filled in the cavity with B2 some materials, The B2 some materials are later than the moment of B1 some materials shunk after turning point occurs at the time of starting to lose flowability; The moment shunk after turning point occurs is determined that the ratio is to reach the moment B1 material by a time ratios The age of material and the ratio between the age for reaching B1 material when shrinking turning point;The ratio be equal to 1.25 or 1.5 or 1.75 or 2.0 or 2.5 or 3 or 4 or 5 or 8 or 10 or 15 or 20 or 30 or 60 or 100.
Further, before the part B1 and B2 some materials are filled in the cavity, further includes:
The part B1 and B2 some materials are provided, after the part B1 is filled in the cavity with B2 some materials, It is corresponding that the B2 some materials are later than B1 some materials static strength at the time of starting to lose flowability reaches an intermediate intensity At the time of, the intermediate intensity be final static strength 10% or 20% or 30% or 40% or 50% or 60% or 70% or 80% or 90% or 95% or 98%.
Further, the mobility is one of following characteristic:
(1) material does not have static shearing strength, or hardly have static state regardless of whether by acting by external hydrostatic pressure Shearing strength;Described hardly have static shearing strength and refer to, compared with the final static shearing strength of curable material, institute The static shearing strength for stating the moment is very small, only several a ten thousandths of final strength to ten parts;
(2) material does not have static uniaxial compressive strength, or hardly has static uniaxial compressive strength;It is described hardly Have static space to refer to, compared with the final static space of curable material, the static pressure resistance at the moment Degree is very small, only several a ten thousandths of final strength to ten parts;
(3) when being acted on by the shear force of any very little, continuous modification can all occur;The shearing force of the very little refers to, is applying At the time of adding shearing force, shearing force be only the final static shearing strength of curable material several a ten thousandths to more than ten/ One.
Further, before applying pressure to B1 the and/or B2 some materials, further includes:
It determines and stressed range is applied to the part the B2 and/or B1;And
It determines and applies stressed time range, the application pressure, which refers to, increases pressure and/or maintenance constant pressure.
Further, section where applying upper limit of pressure to B1 the and/or B2 some materials are as follows: 0.1~7MPa, or 7~15MPa or 15~30MPa or 30~60MPa or 60~90MPa or 90~120MPa, or it is greater than 120MPa.
Further, the certain time period in the time range that B2 some materials have mobility or certain several time In section or whole process, the B2 some materials in cavity are directly squeezed, the pressure of B2 some materials is made to reach the model of design requirement It encloses, the B2 some materials transmit pressure to the part B1 again.
Further, it in the time range that B2 some materials have mobility, within a continuous period, maintains The pressure of B2 some materials is in pre-set pressure range in cavity;
It is engraved in the time range of one of at the beginning of the continuous period:
B1 the and B2 material of place in the cavities all has in the time range of mobility;
It is in after B1 material loses flowability, before the contraction turning point of B1 material occurs;
The finish time of the continuous period is in the time range of one of:
After B1 material loses flowability, before the contraction turning point of B1 material occurs;
After the contraction turning point of B1 material occurs, the mobility of B2 material was lost before the moment.
Further, stressed method is being applied including at least following one to B1 the and/or B2 some materials:
(1) material for using the part B1 and/or the part B2 in piston press cavity, to B1 the and/or B2 some materials Apply pressure;
(2) with the cavity connection and be full of the pipeline of B2 material, used in the part B2 and/or B1 into cavity Material transmits pressure;Preferably, with the pipeline cavity connection and full of B2 material, it is connected to the part B2 in cavity Region;
(3) with the cavity connection and be full of the pipeline of B1 material, B2 and/or B1 some materials into cavity Transmit pressure;
(4) built-in volume compensation device is installed in the cavity, using the volume compensation device to the B1 and/or The part B2 applies pressure.
Further, the built-in volume compensation device is placed in the partial region B2 in the cavities, when the cavity inside The B1 some materials shrink, and the B2 some materials have mobility or when rheology can occur, the body Product compensation device expands, and applies pressure to the part B2, pushes the material of the part B2 to fill up the part B1 and receives The volume that contracting is fallen.
Further, the built-in volume compensation device is air bag or liquid capsule;
The air bag is connect by pipeline with the air pump except composite structure, and air pressure when air pump works in air bag gradually increases Add, the air pressure in air bag is applied to the pressure on surrounding medium no better than air bag, wants when the air pressure in air bag enters design In the range of after, maintain air pressure change in the range;
The liquid capsule is connect by pipeline with the hydraulic power source except composite structure, and hydraulic power source pushes fluid pressure to increase, liquid The hydraulic liquid capsule that is no better than in capsule is applied to the pressure on surrounding medium, after pressure enters in the range of design requirement, Maintaining liquid pressure changes in the range.
Further, applying stressed method to the part the B1 and/or B2 is:
It is provided with external volume compensation device except the composite structure, is helped using the external volume compensation device Maintain the pressure of the part B2 in cavity in the range of design requirement;
The external volume compensation device is the device with hydraulic accumulator function, when the body of flowable media therein When product changes, pressure is almost unchanged or varies less.
Further, the liquid capsule passes through pipeline except the hydraulic power source other than composite structure is connect, and also and accumulation of energy Device connection, accumulator are used to help that pressure is maintained to change in the range of design requirement.
Further, (1) when in piston press cavity B1 part and/or the part B2 material when, also with one or It is multiple to be filled with flowable B2 material pipe the B2 material area in cavity is connect with external volume compensation device;
(2) when with the cavity connection and be full of the pipeline of B2 material, the part B2 and/or B1 institute into cavity When transmitting pressure with material, also with the cavity connection and on pipeline full of B2 material connection it is one or more external Volume compensation device, alternatively, with one or more be filled with flowable B2 material pipe in cavity B2 material area with External volume compensation device connects.
Further, valve is provided on the pipeline of connection part A cavity and external volume compensation device;Remaining empty During the pressure of B2 material in chamber changes in scope of design, what the valve was to turn on, the at this moment medium in pipeline It can be with inflow and outflow;At a certain moment before B2 material loses flowability, valve is closed, the medium in pipeline cannot flow; External volume compensation device is laid down, curable material therein is cleaned out, so that external volume compensation device can be repeated It uses.
Further, with the cavity connection and be full of the pipeline of B2 material, the portion B2 and/or B1 into cavity During dividing material therefor transmitting pressure, the other end of pipeline is connected on pressurizing device, and loading device maintains in pipeline Pressure is in the range of design requirement;It is provided with valve on the pipeline, it is a certain before the mobility of B2 material loses Moment closes valve, lays down pressurizing device, pressurizing device is cleaned, to reuse.
Further, (1) maintains to apply when using the material of the part B1 and/or the part B2 in piston press cavity Pressure to piston rod outer end has a predetermined strength up to B2 material;The predetermined strength can be resisted outside because of removal piston rod The pressure at end and the stress variation generated;
(2) when using pipeline to transmit pressure, the pressure of the B2 or B1 material in pipeline is maintained until B2 or B1 material Material has a predetermined strength;The predetermined strength, which can be resisted, generates stress variation because of sawed-off pipeline;The pipeline be with it is described Cavity connection, and full of B2 or B1 material;
(3) when using built-in volume compensation device to pressurize to B2 and/or B1 some materials, built-in volume compensation is maintained Until B2 and B1 material all has predetermined strength, which can resist because built-in volume is mended pressure medium in device Device is repaid not provide pressure and generate stress variation.
Further, B2 some materials ratio B1 material in the cavities has in the time range of opposite high fluidity, Certain time period therein or certain several period or whole process, squeeze the B2 material in cavity, allow extruding Device increases extruding force or maintains constant extruding force.
Further, the B2 some materials ratio B1 some materials in cavity have opposite high fluidity, and B1 material has There is shearing strength;In time range under the conditions of meeting this, the B2 material in cavity is squeezed, allows pressurizing unit Increase extruding force or maintains constant extruding force.
Further, pressurizing piston and/or built-in volume compensation device are used when squeezing B2 material;It is filled when squeezing It sets when being piston, it is described to apply constant extruding force and refer to, maintain the load for being applied to piston outer end constant;When pressurizing unit is Built-in volume compensation device, the constant extruding force of the application refers to, keeps the Fluid pressure in air bag or oil sac constant.
Further, complete to the material in cavity apply stressed process after, also to the pressurizing device into The method of capable post-processing, use is following one:
(1) if pressurizing device is pressurizing piston, the exposed parts of sawed-off piston;
(2) if pressurizing device be with the pipeline of cavity connection and external pressurizing device, lay down pressurizing device, it is sawed-off to fill Full B2 material line;
(3) if pressurizing device is built-in volume compensation device, gas or liquid therein are bled off, injection can coagulate thereto Gu material.
Further, before the part B1 is filled in the cavity or before filling the part B2 in the cavity, Further include: carbon dioxide gas is filled in Xiang Suoshu cavity.
Further, the composite structure dismantles certain parts therein after completing, and makes it as another Component uses.
Further, after the composite structure completes, the plugging plate of one or both ends is laid down, is continued as column Son uses.
It preferably, include the B2 material area for being convex to its encirclement in the thin wall section of the isolating device in II type section When curve or broken line, the B2 material near these positions squeeze isolating device and be displaced outwardly, the tangential method of isolating device is almost There is no the tensile stress of tensile stress or only very little.
A kind of composite structure is made using the method.
(3) beneficial effect
It can be seen from the above technical proposal that the present invention at least has the advantages that one of them:
The present invention has significant technical effect, comes by taking steel core concrete column as an example due to using above technical scheme Explanation.In first age, including a period of time before final set and after final set, cement-based material generates gap because of chemical shrinkage. Effect due to material by compression, the contraction that the apparent volume of material occurs is much larger than the contraction under no pressure effect, phase The gap of ground material internal is answered significantly to reduce.The intensity of cement-based material can be improved in this aspect;It on the other hand can be with So that shrinkage later is significantly reduced.When the B2 to steel duct applies constant compressive pre-stress, steel duct Cement-based material B1 can and steel pipe reduces the lateral pressure of cement-based material too much caused by avoiding because of autogenous shrinkage, more can Avoid the separation of the two.This technical solution makes the proud raising of the uniaxial strengeth of cement-based material itself, or even connects internal friction angle Also it is improved;Cement-based material will not be reduced by the lateral pressure that steel pipe provides because of cement-based material B1 autogenous shrinkage, Or will not be greatly reduced, this is improved the triaxial shear strength of cement-based material;Cement-based material and steel pipe Shear resistance between inner surface is improved, so that the collaborative work effect between cement-based material and steel pipe is mentioned It is high.The resultant effect of this scheme is the bearing capacity that composite structure is significantly increased.
B1 due to the contraction of B1 and/or B2 material, the flowing of B2 material or the flowing of B1 and B2 material, in cavity And/or there are shear-deformable for B2 material.When generating shear-deformable in Material Coagulating Process, material internal has to cut and answer Power.When B2 some materials have opposite high fluidity, even if B1 and B2 material all has shearing strength, be also beneficial to eliminate or The shear stress for reducing the part B1 and B2 in cavity, in addition there are be conducive to eliminate and reduce the shear stress on part A inner surface.Disappear Except the shear stress inside composite structure is conducive to improve bearing capacity.
Detailed description of the invention
Fig. 1 has the composite structure in I type section, there is isolating device.
Fig. 2 has the composite structure in I type section, without isolating device.
The region Fig. 3 B2 is the II type section of linear type
The region Fig. 4 B2 is criss-cross II type section
The sectional view for crossing axis of composite structure, corresponding with Fig. 6 in Fig. 5 embodiment 1
The cross-sectional view of composite structure in Fig. 6 embodiment 1, the A-A section in Fig. 5, this section are I type section.
The sectional view for crossing axis of composite structure, corresponding with Fig. 8 in Fig. 7 embodiment 2.
The cross-sectional view of composite structure in Fig. 8 embodiment 2, the A-A section in Fig. 7, this section are II type section.
The sectional view for crossing axis of composite structure, corresponding with Figure 10 in Fig. 9 embodiment 3.
The cross-sectional view of composite structure in Figure 10 embodiment 3, the A-A section in Fig. 9, this section are II type section.
The sectional view for crossing axis of composite structure, the B-B section in Figure 12 in Figure 11 embodiment 4.
The cross-sectional view of composite structure in Figure 12 embodiment 4, the A-A section in Figure 11, this section are II type section.
The sectional view for crossing axis of composite structure, corresponding with Figure 14, Figure 15 in Figure 13 embodiment 5.
The cross-sectional view of composite structure in Figure 14 embodiment 5, the A-A section in Figure 13, this section are type III section.
The cross-sectional view of composite structure in Figure 15 embodiment 5, the B-B section in Figure 13, this section are II type section.
The sectional view for crossing axis of composite structure, corresponding with Figure 17, Figure 18 in Figure 16 embodiment 6.
The upper plugging plate cross-sectional view of composite structure in Figure 17 embodiment 6, the A-A section in Figure 16.
The cross-sectional view of composite structure in Figure 18 embodiment 6, the B-B section in Figure 16, this section are type III section.
The sectional view for crossing axis of composite structure, corresponding with Figure 20 in Figure 19 embodiment 7.
The cross-sectional view of composite structure in Figure 20 embodiment 7, the A-A section in Figure 19.
The sectional view for crossing axis of composite structure, corresponding with Figure 22 in Figure 21 embodiment 8.
The cross-sectional view of composite structure in Figure 22 embodiment 8, it is corresponding with the A-A section in Figure 21.
Composite structure cross-sectional view in Figure 23 embodiment 9, this section are IV type section.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference Attached drawing, the present invention is described in more detail.
To introduce technical term according to the present invention first below convenient for the understanding of the present invention.
Term definition
B1 material
Refer to, that material used in the part B1 in cavity.
B2 material
Refer to, that material used in the part B2 in cavity.
Compressive pre-stress
Compressive pre-stress is at a time to be applied to combination knot artificially by squeezing B2 and/or B1 some materials before The stress in B1 and B2 some materials in structure cavity.
For example, after in the cavity of the part A encirclement of B1 and B2 material filling, with tubule the B2 in cavity Partial material is connected with the pressurizing device except cavity, and the part B2 material therefor has been also filled up in pipe.Pressurizing device is to pipe Material in son applies a constant pressure, until the material solidification in pipe and reaches enough intensity.The portion A is removed later Pipe exceptionally except surface, it is clear that the pressure effect that the B1 and B2 material in part A cavity applies before nevertheless suffering from, this Pressure is exactly compressive pre-stress.Since under pressure, B1 and/or B2 material may cause the creep of volume contraction, because This, in some spatial point of cavity inside part B, compressive pre-stress may reduce as time increases;In this portion B On point, the distribution of compressive pre-stress may also change at any time.
Layer material
Layer material is the material of thinner thickness, it is characterized in that bending stiffness very little.Layer material includes lamelliform isolation The extension of device and slow setting antifriction layer.The part contacted in C-shaped isolating device 31 in Figure 12 with part A inner wall is exactly thin Layer material, it is the extension of isolating device.
External volume compensation device
It is the device with hydraulic accumulator function, when the volume of flowable media therein changes, pressure becomes Change very little.
Pressurizing piston (abbreviation piston)
It is the smooth compression bar in a surface, is used cooperatively with the piston hole of part A, sealing ring is provided in piston hole.
Cavity
The meaning for the cavity that composite structure part A is surrounded is including but not limited to following several:
(1) inner space of the penetrating pipe in both ends,
(2) space that pipe closed at one end, the other end is penetrating surrounds,
(3) both ends are sealed with plugging plate, but the space of foraminate device encirclement is opened on plugging plate or pipe,
(4) space that the device of any shape surrounds.
Frustum cone cylinder
Be characterized in: shape is rotary table, and cross section is annulus.
Prism cylinder
Shape is prism, and cross section is the enclosed area between two concentric polygons.
Terrace with edge cylinder
Shape is terrace with edge, and cross section is the closed area between two concentric polygons,
I type section
I type section it is characterized in that, on the cross section, the region of B1 material is simply connected region, the regional edge boundary line Whole or the overwhelming majority be also B2 material area inner edge boundary line, or with B2 inner edge boundary line only across one layer of isolating device; On cross section, the whole or the overwhelming majority in the outside boundary line of B2 material area are the inner edge boundary lines of part A.
The section of composite structure shown in Fig. 1 and Fig. 2 is I type section, and what is filled in simply connected region 21 in Fig. 1 is B1 material Expect, what is filled in annular region 22 is B2 material, and isolating device 3, B2 material and part A are provided between B1 and B2 material Whole inner surfaces of side wall 1 directly contact.There is no isolating device 3 in Fig. 2, rest part is all identical as Fig. 1.
Cross section shown in Fig. 6 is also I type section.
The advantages of type section I, is, after B1 material solidification, B2 material is in flowable state phase, if to B2 material Material applies hydrostatic pressure, then on section everywhere in B1 material all by the effect of hydrostatic pressure, no matter at this moment and before B1 material Whether material shrinks.Even if also, in this stage B1 material undergoing shrinkage, if maintaining the compressive pre-stress of B2 material permanent Fixed, then the contraction of the part B1 can not reduce compressive pre-stress.
II type section
II type section is characterized in: on the section, the part B2 is simply connected region, the whole of the boundary line in the region B2 or The overwhelming majority is the inner edge boundary line in the region B1, or with B1 inner edge boundary line only across one layer of isolating device;The outside in the region B1 The length of the inner boundary line overlap part of boundary line and part A, or therewith only across one layer of slow setting antifriction material or slow setting anti-attrition The length of the part of layer, is the whole or the overwhelming majority of B1 area outer line, and correspond to the inner edge boundary line of part A Whole or the overwhelming majority.
The cross section of composite structure shown in Fig. 3 and Fig. 4 is II type section, and what is filled in region 21 therein is B1 material, What is filled in region 22 is B2 material, and 22 isolated device 3 of B2 material area surrounds, the outer boundary of isolating device 3 it is exhausted big Part is surrounded by B1 material area 21, and the outer end point of isolating device is contacted with the inner surface of part A 1, the outer surface of B1 material It is contacted with the inner surface of part A 1.
Cross section shown in Fig. 8, Figure 10 and Figure 12 is also II type section.
The advantages of type section II is: isolating device size is smaller, facilitates production;B2 peak width is adjustable, can be applicable in In the slightly bigger B2 material of viscosity;Convenient for applying compressive pre-stress with pressurizing piston.
For example, after B1 material solidification, B2 material is in flowable state phase in Fig. 3, if applied to B2 material Hydrostatic pressure, although the pressure that the region B1 is subject on section is not ideal hydrostatic pressure state, close to hydrostatic pressure shape State.
But for section shown in Fig. 8, after B1 material solidification, B2 material is in flowable state phase, if right B2 material applies hydrostatic pressure, B1 material may be made to act in tangential direction under tension, especially upper plenum is straight when section When diameter is larger.If cavity diameter is smaller, and/or, the shrinkage after B1 material solidification is smaller, then can be selected and cut shown in Fig. 8 Face.
Type III section
Type III section is characterized in:
Nucleus on section is simply connected region, fills B21 material;The boundary of B21 material area on section Whole or the overwhelming majority and B1 material area certain border overlays, or therewith across one layer of isolating device;B1 material area The whole or the overwhelming majority of outer boundary are surrounded by B22 material area, and B1 material area is directly contacted with B22 material area, or Therebetween there is an isolating device in person;B22 material area is between B1 material area and part A region.
Preferably, B21 material and B22 material are same materials;
Preferably, the region of the region of the part B1 and the part B22 is annular region.
Preferably, under three axis compression chord states just there is this moment of static shearing strength to open from B1 some materials Begin, until the cement in B1 some materials completes aquation, at least there is such a period in this time range, In the period, compared with B1 material, B21 and B22 material all has opposite high fluidity.
Preferably, in entire composite structure, three-dimensional spatial area corresponding with the part B21, and it is right with the part B22 The three-dimensional spatial area answered is connection or only across layer material on certain sections.
Cross section shown in Figure 14 and Figure 18 is all the section III.
In Figure 14, region 221 and region 22 all fill B2 material, and region 21 fills B1 material.B1 material area 21 is in Between B2 material area 221 and 22, there is isolating device between region 221 and region 21, also have between region 22 and 21 and dress is isolated It sets.
In Figure 18, what region 224 and region 221 filled is all B2 material, and what region 21 filled is B1 material.
The advantages of type III section is can be used in combination with I type section, is stayed to design the shape in B1, B2 partial 3-D region It is lower more.For example, if the 3D region of the part B1 and B2 in cavity contains type III as shown in Figure 13 to 18 B1 the and B2 3D region in section has the advantages that I type and II type section simultaneously.Not only facilitate and loaded with extrusion piston, but also make the portion B1 Point everywhere all only by the effect of hydrostatic pressure.Even if B2 material is in flowable state phase, right after B1 material solidification B2 material applies hydrostatic pressure, still will not generate shear stress everywhere in the part B1.
IV type section
IV type section is characterized in that the whole region in the upper plenum of section is divided into two regions B1 and B2, two regions Difference all contacted with the inner wall of part A have a common boundary between a layer material, the region B1 and B2 therewith or by every It is separated from device.
The advantages of type section IV is that isolating device is easy to make, the disadvantage is that section is asymmetric, is less used in production and greatly enhances The rectilinear axis pillar of diameter ratio, but it is suitable for production arch compression member.Guarantee the region B1 and B2 on section, about arch axis Plane where line is symmetrical.
Solidification
Solidification refers in the present invention, and material is zero or almost nil to be transformed into the mistake with shearing strength by shearing strength Journey.
Solidification including but not limited to:
The net paddle of cement, cement mortar, concrete, Reactive Powder Concrete etc. condensation hardening process;Macromolecule Material is become the process of solid by flowable state.
Intensity increases
After curable material has shearing strength, intensity increased process as time increases.
Inorganic non-metallic curable material
Inorganic non-metallic curable material refers in the present invention, without by react with the ingredient in air can Solidification, inorganic non-metallic material.This material is including but not limited to lime, gypsum, cement etc..
Cement-based material
Cement-based material refers to the material that hydrated cementitious is accompanied by containing cement and in process of setting in the present invention.
Cement-based material including but not limited to:
The net paddle of cement, cement mortar, concrete etc., and
Cement mortar, concrete, Reactive Powder Concrete containing active spike etc., and
The mixture of cement, active spike and water, and
The mixture of cement, active spike and/or nonactive spike and water, and,
The mixture of cement, active spike and/or nonactive spike, solid particle and water.
Active spike refers to, the material of chemical reaction or physical-chemical reaction can occur with the product of cement or cement Material, including but not limited to: flyash, slag, silicon ash, calcium hydroxide powder etc..
The characteristic of nonactive spike is, at normal temperature together with lime, gypsum or portland cement, adding cannot after water mix Hydration reaction occurs or reaction is little, the hydrated product of the hydraulicity cannot be generated.Nonactive spike is including but not limited to lime Stone, quartz sand and slow cooling slag.
Slow setting high molecular material
The spike is characterized in: never static shearing strength starts, and reaches a certain lower numerical value to static shearing strength Terminate, the time used in this process is longer than the time of common high molecular materials, such as this process institute having time is tens of A hour is between several moons or longer.The static shearing strength of lower numerical value is set as needed, such as is set as 0.1MPa, 0.5MPa, 1MPa etc.;When reaching the static state shearing strength numerical value, there is no completions for the process of setting of material, later Static shearing strength can also increase at any time.
In existing slow setting high molecular material, some also has mobility after half a year, these material fillings are slow Between adhesion prestress steel strand and its outer tube.
Slow setting antifriction material
This material has one of following characteristics:
(1) after configuration is completed, in the time range of design requirement, static shearing strength is zero or almost nil, Only several a ten thousandths of the final static shearing strength of slow setting antifriction material are to ten parts;
(2) after the time being more than certain length, the cohesive force and internal friction angle of material have growth, gradually depend on most Final value;Cohesive force and coefficient of friction between slow setting antifriction material and the surface of solids being in contact with it have increase, move closer to In end value.
Slow setting antifriction layer
Slow setting antifriction layer is the stratified material made of slow setting antifriction material, with B1 and/or B2 material and A in the cavities Between partial inner surface.Production method includes following several:
Retarded adhesive material is applied on permeable braided fabric;
Retarded adhesive material is applied to the one or both sides of fluid-tight film, the film surface contacted with part A inner surface On to have the slow setting antifriction material of smearing;
Slow setting antifriction material is smeared on a certain region of the inner surface of part A, then one layer is pasted on slow setting antifriction material Permeable braided fabric or fluid-tight film.
At the time of slow setting antifriction layer loses flowability, have to be later than the B1 material in cavity start solidification at the time of, most At the time of the contraction turning point that be later than B1 material well occurs, in order to weaken or eliminate B1 material towards part A inner wall that Shear stress on a surface.If there is no slow setting antifriction layer, since volume contraction, B1 material and part A occur for B1 some materials Inner wall has shear stress on interface.
Mobility
Material refers to that material at least has one of following characteristic with mobility.
(1) material does not have static shearing strength, or hardly have static state regardless of whether by acting by external hydrostatic pressure Shearing strength;Described hardly have static shearing strength and refer to, compared with the final static shearing strength of curable material, institute The static shearing strength for stating the moment is very small, only several a ten thousandths of final strength to ten parts;
(2) material does not have static uniaxial compressive strength, or hardly has static uniaxial compressive strength;It is described hardly Have static space to refer to, compared with the final static space of curable material, the static pressure resistance at the moment Degree is very small, only several a ten thousandths of final strength to ten parts;
(3) by the shearing force of any very little when, continuous modification can all occur;The shearing force of the very little refers to, At the time of applying shearing force, shearing force be only the final static shearing strength of curable material several a ten thousandths to more than ten/ One.
Static strength
Static strength refers to, the intensity that static strength measurement method measures as defined in code requirement.
Final static strength
After the static strength of material no longer changes as time increases or almost no longer changes, using static strong The intensity that degree measurement method measures is exactly the final static strength of material.Static tension, resistance to compression, the shearing strength of material are corresponding Final static strength is referred to as final static tensile strength, final static space, final static shearing strength.
The flowable time
After all the components mixing of material, material has the time duration of mobility.
Opposite high fluidity
At a time, material first and material second is all by identical stress, the stress do not change over time and Its deviator is not zero, if the inclined strain rate of material first is higher than the inclined strain rate of material second, claims material first than material second With opposite high fluidity.
Flowable state
When material has mobility, material is just in flowable state.
Chemical shrinkage
Absolute volume after aquation is less than the water before aquation and other the sum of volumes of various composition for participating in aquation.
Shrink turning point
It is put into enclosed environment newly cement-based material is mixed, it is allowed to undergo two stages:
(1) in the first stage, the pressure that material is subject to is at least variation in the rigid incipient stage, and the temperature of experience is can be with Variation;
(2) it in second stage, keeps temperature and pressure constant, records its bulk strain and time curve.
In second stage, if there are a point with following characteristics in bulk strain and time curve, it should Point is exactly to shrink turning point.The point is characterized in: the maximum curvature of curve at this point, bulk strain rate after this point Far below the Mean Speed for being in second stage before, only 1/the tens of the rate are to part before, even more It is low.Within the scope of the common ratio of mud or water-cement ratio, when contraction turning point occurs, material has had certain static shearing resistance strong Degree.
If not occurring turning point in second stage in bulk strain and time curve, illustrating second stage Time started is too late, by shortening the time span of first stage, the curve in second stage can be made turning point occur.If Material is also in flowable state when second stage starts, then can centainly find turning point.Even if starting in second stage Certain static shearing strength that moment material has, if intensity be not it is sufficiently high, be still able to turning point occur.
Reach the time for shrinking turning point
Starting time is newly to mix after cement-based material is put into enclosed environment, when the pressure being subject to just starts raised It carves;Terminal time is the turning point corresponding moment in curve;The length for this period reached home from starting point, which is known as reaching, to be received The time of contracting turning point.
Pressure source
The device of pressure can be provided to fluid, such as pumped, accumulator etc..
Directly drive the range of choice of the pressure source in the volume compensation device for the B2 material flowing for being in flowable state It is: grouting pump, accumulator, piston-press device.Piston-press device is similar to hydraulic jack, with B2 material substitution hydraulic oil , when being further applied load to piston, the pressure of the B2 material in " oil cylinder " just be will increase, and material can be along the pipeline being attached thereto It is injected into the region B2 in composite structure cavity.
Post-processing approach
If pressurizing device is pressurizing piston, post-processing approach is the exposed parts of sawed-off piston.When sawed-off, in cavity To reach enough intensity with the material of piston contact, so as to resist because piston rod loses after applied external force to B1 and B2 material bring stress variation.
If pressurizing device be with the pipeline of cavity connection and external pressurizing device, post-processing approach be lay down pressurization dress It sets, it is sawed-off to be full of B2 material line.When sawed-off pipeline, B1 the or B2 material near the nozzle of the part A in cavity will reach foot Enough intensity, issues again to prevent stress and is squeezed bad.
If pressurizing device is built-in volume compensation device, post-processing approach is to bleed off gas or liquid therein, Xiang Qi Middle injection curable material.When carrying out above-mentioned processing, the intensity of B1 and B2 material will meet claimed below, and material has enough Intensity go resist because remove volume compensation device bring pressure imbalance;The change of material stress state, does not drop in cavity Intensity at a specified future date that is low or reducing respective material less.
Embodiment
Composite structure of the present invention and preparation method thereof is discussed in detail below with reference to embodiment and attached drawing.
Embodiment 1. --- I type section (Fig. 5 and Fig. 6)
Steel pipe grout mortar mix structure, a certain stage in the production process are as shown in Figure 5 and Figure 6.Part A is by steel pipe 11, lower plugging plate 12 and upper plugging plate 13 form.The center of lower plugging plate 12 is provided with a threaded circular hole 121, it is also equipped with a threaded circular hole in the center of upper plugging plate 13, which is connected to a construction pipe 51.When After construction is completed, construction pipe 51 will be laid down or sawed-off.
The steel pipe 11 of part A uses Q345 steel, yield strength 345MPa.Steel pipe 11 be seamless steel pipe, outer diameter 245mm, Wall thickness 12mm.Fluid pressure is greater than side wall in the cavity that part A both ends are resistant to.
One isolating device 3 is installed in the cavity of part A, isolating device includes side wall and upper and lower end plate, bottom plate Lower end is shut, there are circular holes 331 for upper head plate central area.Isolating device sidewall thickness is 1mm, and upper and lower end plate thickness is 2mm, material Material is A3 steel.Fixed device 41 is provided between isolating device and the side wall 11 of the part A, with solid between the lower plugging plate 12 of A Determine the connection of device 42.
The material of the part B1 21 is cement mortar, and cement is PI type portland cement, less than 6 hours of final setting time.B2 The material of part 22 is set retarding active powder concrete, also has mobility when age is 10 hours.B1 material be in every From in the cavity inside device 3;B2 material is in the gap between isolating device 3 and part A;The inner wall of part A and B2 Contact, not with B1 material.
The part 1.A, isolating device construction method
(1) steel pipe of part A 11 and lower plugging plate 12 are welded together;
(2) isolating device 3 is installed to steel duct;
(3) upper plugging plate is connected to steel pipe upper end.The method connection of welding can be used;Method can also be set in steel pipe upper end Blue disk is connected to upper plugging plate on ring flange.
The method for implanting of 2.B1 and B2 material
First construction pipe 51 is connected in the circular hole on the upper end 13 of A, then carries out the work of injection material again.Injection During or injection complete after, vibration excitor can be fixed on the side wall of A, to entire steel pipe apply vibrate, make B1, B2 material Material becomes dense, and wherein mixed air is discharged.
Method 1 (injection of two steps)
(1) cement mortar (B1 material), injection process are injected into the internal cavities 21 of isolating device 3 by pipe 51 of constructing Middle holding fill orifice 121 is not blocked, to exclude air.When injecting B1 material, construction pipe 51 can be extend into isolating device Opening 311 in;The injection completion of equal B1 and then lifting construction pipe, make its lower end enter isolating device and A inner wall it Between gap in.After B1 injection is completed, the B1 material adhered on the inner wall of construction pipe 51 is cleaned up.
(2) fill to B1 or close to after filling the internal cavities of isolating device 3, (isolating device 3 cannot be higher by), to every Slow setting RPC (B2) is perfused from the gap between device 3 and the part A, until the close cavity for being filled with construction pipe 51 of material B2 Position.If the B1 material filled does not fill up isolating device before, B2 can fill its remainder.Injection B2 method be It is connected on fill orifice 121 with a pipe, slow setting RPC (B2) is squeezed between isolating device 3 and part A 1 by pipe In gap, enter finally into construction pipe hole 52 in.During injecting B2, air is discharged from construction pipe.
Method 2 (synchronous or staggeredly injection)
(1) injecting height of B1 and the difference of injecting height of B2 is kept to be in claimed range, synchronously inject B1 and B2 material, or alternately inject B1 and B2 material.In this approach, construction pore 52 is passed through with a feeder sleeve, be inserted into In the cavity of isolating device, B1 material is injected by this pipe.There are gap between feeder sleeve and the inner wall for pipe 51 of constructing, so as to When injecting B1 and B2 material, air can be excluded from gap.The method for injecting B2 material is that tubule is connected to On the circular hole 121 of the lower end plugging plate 12 of part A, B2 material is injected by tubule.
(2) when material B1 is full of or close to full of isolating device 3 cavity after, stop injection B1 material, and feed Pipe is extracted from the hole of construction pipe 51.But continue to inject B2 material, until being almost filled with entire construction pore 52.
Method 3 (pre- carbon dioxide injection gas)
(1) carbon dioxide gas is injected into cavity, replaces original air.
(2) it keeps the injecting height of B1 and the difference of the injecting height of B2 to be in the range of requirement, synchronously injects B1 With B2 material, or alternately injection B1 and B2 material.B1 material is directly injected from construction pipe 51, lower end circular hole of the B2 material from A 121 inject, and do not have to consider to exclude air in injection process.
(3) after B1 material is full of or close to full of isolating device 3, stop injection B1 material;But continue to inject B2 material Material, until being almost filled with entire construction pore 52.
Since carbon dioxide can be dissolved in water, pressure is bigger, and solubility is higher.In pressure process below, carbon dioxide It can be dissolved by the moisture in RPC, and finally react with the ingredient in cement mortar and RPC and be converted to solid.So During injecting B1 and B2, no longer need to exclude carbon dioxide.
3. pressure method
After completing the injection of B1 and B2, the pipe being connected with part A lower end circular hole 121 is laid down, fill orifice 121 is used silk It blocks.Volume compensation device (pressurizing device) and construction pipe 51 are linked together.In the time range and design of design In pressure limit, pressure is applied to the B2 material in construction pore 52.
(1) the determination hydrostatic pressure design value P to be applied0
The cavity inside maximum pressure being able to bear according to part A determines hydrostatic pressure maximum value PM.In design part A When end, it is ensured that the hydrostatic pressure that part A end is able to bear is greater than or equal to pipe sidewall.According to thin wall cylinder public affairs Formula calculates the maximum pressure P that part A side wall is able to bearM
The hydrostatic pressure P that B2 material is applied0It is taken as P0=33MPa, meets P0< PM
(2) time range of volume compensation is determined
It is the zero point of its age at the time of cement in note B1 material is mixed with water.Reach 40 minutes in the age of B1 material Before, it completes to inject B1 and B2 material into A portion cavity.Also, before the age of B1 material reaches 50 minutes, start Pressure is applied to B2 material with volume compensation device, pressure is added to 33MPa within ten minutes, maintains construction pore 52 later In pressure it is constant, at the time of maintaining the finish time of constant pressure to be later than B2 material to start to lose flowability.
4. the post-processing approach of volume compensation device
After B1 and B2 material has enough intensity, volume compensation device is laid down, construction is then removed again and manages and carry out Post-processing.Removal construction pipe and the method for post-processing are at least three kinds following.
First method is to amputate from construction pipe root construction pipe together with internal hardened RPC.
Second method is to twist construction pipe with tool, the B2 material of the solidification in pipe is twisted off, lay down construction pipe;So Afterwards, the hole left after construction pipe, flattened surface are laid down with the filling of suitable curable material.
Preceding several steps of the third method and second method are all identical, only after laying down construction pipe, with having The cylindrical body substitution construction pipe of screw thread is screwed in circular hole, can fill a part of solidifiable into the hole that construction pipe leaves before twisting Material.
It is recommended that attempting, within 48~72 hours B2 material ages, construction pipe is amputated or lays down, at this moment material is strong Bring pressure imbalance when degree can resist removal construction pipe.
Some in volume compensation device is equipped with RPC, destroys together after RPC solidification, this part is disposably to consume Material.
Embodiment 2. --- II type section (Fig. 7, Fig. 8)
The steel tube-concrete composite structure being nearly completed is as shown in Figure 7 and Figure 8.The part A of this structure is by steel pipe 11, lower envelope Closure plate 12 and upper plugging plate 13 form.In the eccentric position of upper plugging plate 13 there are circular hole 131 is fed, for injecting B1 material; In the center of upper plugging plate, be provided with piston hole, inserted with pressurizing piston 6 in hole, pressurizing piston surface is smooth, piston with Sealing ring is provided between hole wall.Steel duct is provided with isolating device 3, this device is the iron pipe that surface is distributed circular hole, Circularhole diameter is 5~7mm, is enclosed with metal mesh on the outside of iron pipe, mesh be it is rectangular, eye is wide to be selected between 0.5~2mm. Iron pipe as isolating device is fixed on the plugging plate up and down of part A.
The internal fluid pressure that part A is resistant to be 55MPa, take in cavity B1, B2 material apply pressure be 50MPa。
B1 material is the high-strength concrete containing coarse aggregate;B2 material is set retarding active powder concrete, the quartz used The maximum particle diameter of sand is 0.635mm.B2 material has the time of mobility under 50MPa pressure, than B1 material in same pressure Lower compression strength reaches time when 20MPa, at least to grow 15 hours.
Before placing piston 6, B1 material by feed circular hole 131 be injected into steel duct, during injection or Injection, which applies steel pipe after completing, to be vibrated.When B1 material fills, charging circular hole 131 is sealed with silk plug.Then, it is worn with tubule It crosses piston circular hole and injects B2 material into the cavity 22 of isolating device 3, filled when close to stopping when filling.Then, sealing ring It is placed into piston hole, then in piston inserting hole.When piston 6 is elapsed into the cavity of A, B2 material, B2 material can be squeezed Material is flowed out from the distribution hole of iron pipe, applies pressure to B1 material.If the B2 material flowed out from iron pipe hole is excessive, can tear Metal mesh, this is allowed.
B1, B2 material are encased in corresponding cavity in 35 minutes after water mixing in cement, in 15 later The pressure of B2 material is applied to 50MPa within minute, then maintains this pressure constant.If be applied to outside pressurizing piston 6 Load on end be it is constant, then the compression being in the B2 material of flow regime is also constant.Maintenance is applied to piston 6 Load on outer end is constant, until the intensity of B2 material can satisfy it is claimed below: removal piston outer end load when, the change of piston Shape and the mobile intensity at a specified future date for not influencing B1, B2 material in cavity.
Embodiment 3. --- II type section (Fig. 9, Figure 10)
Steel tube-concrete composite structure is as shown in Figure 9 and Figure 10, and part A is by steel pipe 11, lower plugging plate 12 and upper plugging plate 13 compositions.It is provided with isolating device in the cavity of part A, it is made of corrugated iron sheet 31 and 32, and corrugated plating is fixed on steel pipe On inner wall.22 filler B2 of corrugated plating enclosing region, the region 211 and 212 between steel pipe and corrugated plating fill B1 material, Slow setting antifriction material is all smeared on all regions with B1 material in part A inner wall.
The maximum value that part A is resistant to fluid pressure in cavity is 55MPa, B1 and B2 material filling to cavity it Afterwards, apply the pressure of 50MPa to it.
B1 material is Reactive Powder Concrete, and B2 material is set retarding active powder concrete.At room temperature, quiet in 50MPa Under effect of water pressure, the time that B1 material reaches contraction turning point is 20 hours, and it is small that the flowable time span of B2 material is greater than 25 When.
Cavity 211 and left cavity 212 fill B1 material to through hole 121 and 122 to the right respectively, until being filled with;It is logical It crosses in the region 22 that construction pore 52 is surrounded to corrugated plating and fills B2 material, be filled with construction pore 52 until B2 material is close.
The work that B1 and B2 material is filled into steel pipe cavity is completed within 40 minutes after cement is mixed with water.With Afterwards, within 20 minutes, the pressure of B2 material in cavity is added to 50MPa;Then, maintain pressure constant, until B2 material Until losing flowability.Later, keep the B2 material in construction pore not disturbed, when B2 material has enough intensity, Sawed-off construction pipe 51.Selecting the time standard of sawed-off construction pipe is, pressure imbalance caused by removal construction pipe does not influence to combine The intensity at a specified future date of B1 and B2 material in structure.
Embodiment 4. --- II type section (Figure 11, Figure 12)
Composite structure is as shown in Figure 11, Figure 12, wherein other than the difference in isolating device and embodiment 3, remaining It is all identical.Isolating device is made of a C-shaped corrugated plating 31 and a reverse c-shape corrugated plating 32, and corrugated plating is directly introduced to steel pipe Cavity in, be not attached with steel pipe and upper and lower plugging plate.Several dotted supporters are placed between two corrugated platings, with Just when injecting B1 material to region 211 and 212, gap appropriate is able to maintain between two corrugated platings.
Before filling B1, B2 material, slow setting antifriction material is smeared to whole inner walls of part A cavity.
The method that B1 and B2 material is filled into cavity is: B1 material synchronously first is injected to region 211 and region 212, B2 material is injected when being injected into appropriate height or filling, then to region 22.Just start B1 material when injection in order to prevent to enter To between corrugated plating and steel pipe, the lateral ends of corrugated plating can be pasted on steel pipe inner wall with adhesive tape etc. before injection.
After B1, B2 material filling are completed, pressure, method and reality are applied to the part B2 with external volume compensation device It is identical to apply example 3.
Embodiment 5. --- I type and type III section (Figure 13, Figure 14, Figure 15)
Steel tube-concrete composite structure as shown in Figure 13, Figure 14 and Figure 15, part A by steel pipe 11, lower plugging plate 12 and on Plugging plate 13 forms.Isolating device is installed in the cavity of part A, isolating device include bottom plate 32, thin-walled cylinder 31, Upper head plate 33, interior thin-walled cylinder 34 and anti-return emit 35.The effect that anti-return emits is: during injecting B1 material, resistance Only B1 material flows up in region 21;During applying pressure to the B2 material for being in flowable state, allow interior thin B2 material in wall cylinder 34 flows downward.There is fixed device 41 and 42 between isolating device and part A.The upper closure of part A Plate 13 is provided with circular hole 131, opposite with the circular hole 331 of isolating device upper head plate.13 center of plugging plate is provided with circle in part A Hole inserts pressurizing piston 6 in circular hole, is equipped with sealing ring between piston and circular hole wall.
B1 material is Reactive Powder Concrete, and B2 material is set retarding active powder concrete.It is filled all in region 21 It is B1 material, what is filled in region 22 and 221 is all B2 material.
The placement method of B1, B2 material comprises the steps of.
(1) tubule is fed one to be inserted into region 21 across the circular hole 131 of part A and the circular hole 331 of isolating device, B1 material is injected into wherein by this tubule, fills the region until filling or approaching.It is noted that cannot allow B1 material from every From being overflowed in device circular hole 331.Feeder sleeve between circular hole 331 there are gap, air can be discharged from.
(2) height for adjusting pressurizing piston, can block the center hole of plugging plate 13, but be not inserted into In isolating device in thin-walled cylinder 34.
(3) from the inside injection B2 material of the lower end circular hole 121 of A, upper end circular hole 131 is open when injection, for sky is discharged Gas.After B2 material filling expires all gap areas 22 and region 221, the lower end circular hole 121 and upper end circle of A are sealed with silk plug Hole 131.
When fill complete after, be further applied load to pressurizing piston, until the pressure of B2 material reaches 50MP, it is latter It is straight to keep load constant.After the intensity of B2 material reaches required value, from the sawed-off pressurizing piston in root.
Embodiment 6. --- type III section (Figure 16, Figure 17, Figure 18)
Steel tube-concrete composite structure is as shown in Figure 16, Figure 17 and Figure 18, and wherein part A includes steel pipe 11, lower plugging plate 12 and upper plugging plate 13.Isolating device includes outer cylinder 31, bottom plate 32 and inner cylinder 34, and branch is provided between inner cylinder 34 and outer cylinder 31 Strut 412.Fixed device 411 and 42 is provided between isolating device and part A.It is provided in the upper plugging plate of part A partially Heart circular hole 131 and center hole, pressurizing piston 6 can pass through center hole, enter in the hole of inner cylinder 34 of isolating device.
B1 material is Reactive Powder Concrete, and B2 material is set retarding active powder concrete.After filling is completed, B1 material It is in the region 21 between the inner/outer tube of isolating device, B2 material is in the steel pipe inside region 221 of part A, lower plugging plate In 34 enclosing region 224 of 12 inside regions 222,13 inside region 223 of upper plugging plate and isolating device inner cylinder.
The placement method of B1 material is, passes through circular hole 131 with tubule and injects B1 material to region 21, when B1 be filled to it is close On the inner/outer tube of isolating device along when stop.The placement method of B2 material is to pass through pressurizing piston hole with tubule and isolation fills Inner cylinder is set, is reached in lower end area 222, B2 material is injected with this pipe, until all areas remaining in the cavity for fill part A Domain.
It is inserted into pressurizing piston, is elapsed downwards, until the compression of B2 material reaches design value.It is applied to the lotus of piston outer end It carries directly proportional to the compression that B2 material is subject to.
Embodiment 7. --- (Figure 19, Figure 20)
For composite structure as shown in Figure 19, Figure 20, what biggish region 21 filled in part A cavity is B1 material, upper closure What plate inside region 22 filled is B2 material, does not have isolating device between B1 and B2 material.Whole side walls in the cavities are under Slow setting antifriction layer is all pasted on the inside of plugging plate.
B1 is the super high strength concrete containing coarse aggregate, and B2 material is set retarding active powder concrete.Mutually synthermal and Under pressure, the flowable time of B2 material reaches than B1 material and shrinks turning point time to 10 hours of the youthful and the elderly.
After material filling is completed, external volume compensation device is passed through the center of construction pipe 51 and the upper plugging plate of A Circular hole is connected together, and what is filled in volume compensation device is also B2 material.Pressure is applied to the B2 material in the cavity of part A, Pressure is maintained to change in desired upper and lower limits after reaching design value.After the contraction turning point of B1 material occurs, B2 material When material also has mobility, the valve between construction pipe and pressure source is at this moment closed, pressure source is laid down.It is strong when B1, B2 material Spend it is sufficiently high after, sawed-off construction pipe 51.Pressure source can be pump, is also possible to the device similar to hydraulic jack, uses B2 Material substitution hydraulic oil can apply pressure to B2 material by pushing piston.
Embodiment 8. --- I type section (Figure 21 and Figure 22)
Steel pipe grout mortar mix structure, a certain stage in the production process is as shown in figure 21 and figure.
Part A is made of steel pipe 11, lower plugging plate 12 and upper plugging plate 13.It is provided in the center of lower plugging plate 12 One threaded circular hole 121;In the center of upper plugging plate 13, it is provided with piston hole, inserted with pressurizing piston 51 in hole, Pressurizing piston surface is smooth, and sealing ring is provided between piston and hole wall.
One isolating device 3 is installed in the cavity of part A, isolating device is identical as in embodiment 1.
The piston hole of upper head plate 13 and the hole 331 of isolating device 3 are first passed through when construction to filling B1 material inside isolating device Material, B1 material are Reactive Powder Concrete, are filled up until close.In stowing operation, B1 material not can enter except isolating device Region.
After B1 has been filled, B2 material is filled into the cavity of A by the centre bore 121 of bottom plate 12, B2 material is Set retarding active powder concrete, ratio B1 material occurs shrinking late at the time of turning point at the time of starting to lose flowability corresponding 10 hours.
After B2 material filling is completed, hole 121 is linked up with pipe with volume compensation device, is allowed in pipeline and volume The B2 material in flow regime is filled in compensation device.Volume compensation device is similar to accumulator, is provided with air bag, Flowable B2 material in extrudable accumulator.
Pressurizing piston 51 is installed in the centre bore of upper head plate 13, pushes piston downlink, piston passes through on the inside of upper head plate The region B2, enter in the B1 material in isolating device.When the load being applied on piston reaches design value, piston is consolidated It lives calmly, it is not allowed to move.During piston enters B1 material area, the flowing of B1 drive material B2 material squeezes B2 material The air bag in accumulator, air bag volume contraction are pressed, pressure has small increase.Later, keep the position of pressurizing piston 51 constant, when When B1 and B2 material undergoing shrinkage, the volume change of both materials is filled up in air bag expansion.
Embodiment 9. --- IV type section (Figure 23)
Composite structure section is as shown in figure 23, and biggish region 21 and lesser region 22 are filled respectively in the cavity of part A 1 What is filled out is B1 and B2 material, there is isolating device 3 between B1 and B2 material.B1 is the super high strength concrete containing coarse aggregate, B2 material Material is set retarding active powder concrete.Under identical temperature and pressure, at the time of the mobility of B2 material terminates, received than B1 material 5 hours of evening at the time of contracting turning point occurs.
Pressure method:
After B2 and B1 material filling is completed, when B2 and B1 material is at flowable state, start to apply B2 material Pressure maintains pressure to fluctuate in the range of requiring after reaching design value, and maintaining the pressure end time is had in B2 material After having certain intensity.
Certainly, composite structure of the present invention is not limited to tubular structure, can also be other shapes structure, does not influence this hair Bright realization.
So far, attached drawing is had been combined the present embodiment is described in detail.According to above description, those skilled in the art There should be clear understanding to the present invention.
It should be noted that in attached drawing or specification text, the implementation for not being painted or describing is affiliated technology Form known to a person of ordinary skill in the art, is not described in detail in field.
It should also be noted that, the present invention can provide the demonstrations of the parameter comprising particular value, but these parameters are without definite Equal to corresponding value, but analog value can be similar in acceptable error margin or design constraint.It is mentioned in embodiment Direction term is only the direction with reference to attached drawing, the protection scope being not intended to limit the invention.In addition, unless specifically described or The step of must sequentially occurring, there is no restriction for the sequences of above-mentioned steps in listed above, and can be changed according to required design or It rearranges.And above-described embodiment can be based on the considerations of design and reliability, and the collocation that is mixed with each other is implemented using or with other Example mix and match uses, i.e., the technical characteristic in different embodiments can freely form more embodiments.
It should be noted that running through attached drawing, identical element is indicated by same or similar appended drawing reference.In the following description, Some specific embodiments are used for description purposes only, and should not be construed to the present invention has any restrictions, and only the present invention is real Apply the example of example.When may cause the understanding of the present invention and cause to obscure, conventional structure or construction will be omitted.It should be noted that figure In the shape and size of each component do not reflect actual size and ratio, and only illustrate the content of the embodiment of the present invention.
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical scheme and beneficial effects It describes in detail bright, it should be understood that the above is only a specific embodiment of the present invention, is not intended to restrict the invention, it is all Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in guarantor of the invention Within the scope of shield.

Claims (44)

1. a kind of composite structure, including part A and part B;Wherein, the part A is surrounded by cavity, and the part B is filled in In the cavity, and the part B includes the part B1 and the part B2.
2. composite structure according to claim 1, it is characterized in that the composite structure is at least with next feature:
(1) at least a part of boundary in the part B2 is directly contacted with the inner wall of part A,
(2) at least a part of boundary in the part B1 is directly contacted with the inner wall of part A,
(3) at least part boundary of the part B1 is directly contacted at least part boundary of the part B2,
(4) at least part boundary of the part B1 and at least part boundary isolated device of the part B2 separate.
3. composite structure according to claim 1 or 2, characterized in that
The composite structure further includes layer material, by the inner wall at least part boundary of the part B2 and the part A It separates, and/or, the inner wall at least part boundary of the part B1 and the part A is separated;The layer material includes The extension of the isolating device of slow setting antifriction layer or stratiform.
4. composite structure according to claim 1, characterized in that the B1 some materials and B2 some materials are that can coagulate Gu material;During the B1 some materials and B2 some materials are filled to the cavity, B1 the and B2 some materials For flowable state;At a certain moment after having crossed filling and having completed, B1 the and B2 some materials are curdled appearance, and are solidified Process is completed in the cavity inside.
5. composite structure according to claim 1 or 4, characterized in that the B1 some materials and B2 some materials all Effect after solidification, also by compressive pre-stress or residual compressive pre-stress;
The residual compressive pre-stress is meant that after B1 and B2 material all solidifies, B1 and/or B2 material also occurs that receipts Contracting, at this moment compressive pre-stress original in material can become smaller, and the compressive pre-stress after becoming smaller is exactly the residual compressive pre-stress.
6. composite structure according to claim 1 or 5, further includes built-in volume compensation device, which is located at the sky Intracavitary portion, for applying compressive pre-stress to B1 the and/or B2 material in cavity;When the part the B1 and/or the part B2 When volume change, the built-in volume compensation device can also change correspondingly the volume of itself, the part compensation B1 and/or the B2 Partial volume change.
7. composite structure according to claim 1 or 6, characterized in that the built-in volume compensation device is,
Air bag is built within cavity, is surrounded by B2 and/or B1 material;And/or
Liquid capsule is built within cavity, is surrounded by B2 and/or B1 material;
Preferably, the air bag or liquid capsule are surrounded by B2 material;After B1 the and B2 material reaches enough intensity,
If the built-in volume compensation device is air bag, compressed gas therein is exhausted, solidifiable is filled with into air bag Material;
If the built-in volume compensation device is liquid capsule, liquid therein is exhausted, is filled with curable material thereto.
8. composite structure according to claim 1 or 5 further includes pressurizing piston;The pressurizing piston and piston hole are mating It uses, the piston hole is arranged in part A, sealing ring is provided in hole, pressurizing piston is mounted in piston hole, and piston exists It can wherein slide;If pressurizing piston is inserted into the region of the part B1 and/or B2 in cavity, in piston press cavity B1 and/or B2 material, make its pressure rise;Pressurizing piston is to apply compressive pre-stress to B1 the and/or B2 material in cavity Device;After B1 the and B2 material in cavity reaches enough intensity, pressurizing piston is removed;Preferably, directly from root The exposed parts of the sawed-off piston rod in portion.
9. further including isolating device according to claim 1 to composite structure described in one of 8, it is located in the cavity;Isolation dress It sets and is between the part B1 and the part B2;It has a common boundary between the part B1 and B2 and/or isolated device separates.
10. according to claim 1 to composite structure described in one of 9, wherein the part A include pipe and with the pipe The lower plugging plate and upper plugging plate of connection.
11. composite structure according to claim 1, wherein the composite structure has an axis, using the axis as method The cross section of the composite structure of line is one of following four, I type section, II type section, type III section, IV type section;
I type section it is characterized in that, on the cross section, the region of B1 material is simply connected region, the regional edge boundary line Whole or the overwhelming majority be also B2 material area inner edge boundary line, or with B2 inner edge boundary line only across one layer of isolating device; On cross section, B2 material area is between the part B1 and part A;
II type section is characterized in, on the section, the part B2 is simply connected region, the whole of the boundary line in the region B2 or The overwhelming majority is the inner edge boundary line in the region B1, or with B1 inner edge boundary line only across one layer of isolating device;B1 material area is in Between B2 material area and a-quadrant;
Preferably, slow setting antifriction layer is provided between part A and B1 material;
The type III section is characterized in: the nucleus on section is simply connected region, fills B21 material;On section Certain border overlays of the whole on the boundary of B21 material area or the overwhelming majority and B1 material area, or therewith across one layer every From device;The whole or the overwhelming majority of the outer boundary of B1 material area are surrounded by B22 material area, B1 material area and B22 Material area directly contacts, or there are an isolating devices therebetween;B22 material area is in B1 material area and the portion A Between subregion;
Preferably, B21 material and B22 material are same materials;Preferably, the region of the part B1 and the part B22 Region be annular region;
IV type section is characterized in that the whole region in the upper plenum of section is divided into two regions B1 and B2, two regions Difference all contacted with the inner wall of part A have a common boundary between a layer material, the region B1 and B2 therewith or by every It is separated from device.
12. composite structure according to claim 11, wherein in the composite structure for possessing type III section, with the B21 The corresponding three-dimensional spatial area in part, and three-dimensional spatial area corresponding with the part B22 are connection or only on certain sections Across layer material.
13. composite structure according to claim 1, wherein further include slow setting antifriction layer, setting the part the B1 with it is described Between part A, for weakening or eliminating the shear stress on the two interface;Preferably, at the time of slow setting antifriction layer loses flowability, At the time of the contraction turning point for being later than B1 material occurs.
14. according to claim 1 to composite structure described in one of 13, wherein the composite structure is compression member, including axis Column structure, axis for straight line are the domes of curve;Preferably, the section of the column structure be round, ellipse, Polygon.
15. a kind of production method of composite structure, comprising:
Production is surrounded by the part A of cavity;
Part B is filled in the cavity and applies pressure, comprising: the part B1 and the part B2 are filled in the cavity, it is right The part the B1 and/or B2 applies pressure.
16. manufacturing method according to claim 15, wherein the B2 be partially filled in the part the B1 and part A it Between space in;And/or the part B2 is filled in by space that the part B1 surrounds or that part surrounds.
17. manufacturing method according to claim 15, wherein
At least a part of boundary in the part B2 is directly contacted with the inner wall of part A,
At least a part of boundary in the part B1 is directly contacted with the inner wall of part A,
At least part boundary of the part B1 is directly contacted at least part boundary of the part B2,
At least part boundary of the part B1 and at least part boundary isolated device of the part B2 separate.
18. production method described in 5 or 17 according to claim 1, characterized in that
The composite structure further includes layer material, by the inner wall at least part boundary of the part B2 and the part A It separates, and/or, the inner wall at least part boundary of the part B1 and the part A is separated;The layer material includes The extension of the isolating device of slow setting antifriction layer or stratiform.
19. manufacturing method according to claim 15, wherein the part A is solid material, and the part B is that can coagulate Gu material.
20. production method according to claim 15, characterized in that the mistake filled in the cavity surrounded to the part A Cheng Zhong, B1 the and B2 some materials are in flow regime;The a certain moment after filling is completed is spent, they start described It is solidified in cavity.
21. production method described in one of 5 to 20 according to claim 1, wherein the composite structure is compression member, including Axis is that column structure, the axis of straight line are the domes of curve.
22. manufacturing method according to claim 15, wherein production is surrounded by the part A of cavity, comprising:
Pipe, lower plugging plate and upper plugging plate are provided;
The lower plugging plate is connected to the pipe lower end, and the upper plugging plate is connected to the pipe upper end, is completed The production of the part A for being surrounded by cavity;
Preferably, the pipe is steel pipe.
23. production method according to claim 22, wherein by the lower plugging plate be connected to the pipe lower end it Before, and/or, the upper plugging plate is connected to before the pipe upper end, further includes: install isolating device to the pipe It is interior.
24. production method according to claim 23, wherein the isolating device is following one:
The penetrating tubular structure in both ends, both ends do not have any shelter;
The closed at one end, other end does not have the tubular structure of any shelter;
Tubular structure closed at one end, the other end has partial occlusion, but there are openings.
25. production method described in 5,23 or 24 according to claim 1, wherein the isolating device is following one:
It is made of plate fluid-tight, with certain rigidity, the material of plate is metal, high molecular material or composite material Deng;
It is made of plate fluid-tight, with certain rigidity, cavity or gap is provided on plate, the material of plate is gold Category, high molecular material or composite material;
It is made of fluid-tight fexible film;
It is made of permeable flexible knitting object;
It is made of Web materials permeable, with certain rigidity;
It is made jointly of the Web materials with certain rigidity with fluid-tight fexible film or permeable flexible knitting object;It is netted Material does skeleton, and film or braided fabric are fixed on Web materials.
26. production method described in one of 5 to 20 according to claim 1, wherein the part B1, B2 some materials at least have There is one of following characteristic:
(1) since the part B1, the part B2 are filled to the cavity, the intensity to the B1 some materials reaches final strong Until degree, B2 some materials described in a period of time or multi-section time in this process or whole process are than the portion B1 Divide material that there is opposite high fluidity;
(2) after the part B1, B2 some materials are filled to the cavity, there is static shearing resistance from the B1 some materials Intensity starts, and until its static state shearing strength reaches an intermediate intensity, the B2 some materials have than the B1 some materials There is opposite high fluidity;The intermediate intensity is the 10% or 20% or 30% or 40% or 50% or 60% of final static strength Or 70% or 80% or 90% or 95% or 98%;
(3) after the part B1, B2 some materials are filled to the cavity, just had static shearing resistance strong from B1 some materials Degree starts, and until volume contraction turning point occurs, at least B2 some materials ratio B1 some materials have phase in this process To high fluidity;Alternatively,
After the part B1, B2 some materials are filled to the cavity, from B1 some materials there is static shearing strength to open Begin, until the moment after the appearance of volume contraction turning point, at least part B2 some materials ratio B1 material in this process Material has opposite high fluidity;It is described shrink turning point occur after a moment determined by a time ratios, the ratio Be B1 material when reaching the age of B1 some materials described in moment and reaching the volume contraction turning point age it Than;The ratio is equal to 1.25 or 1.5 or 1.75 or 2.0 or 2.5 or 3 or 4 or 5 or 10 or 15 or 20 or 30 or 40 or 50 or 75 Or 100.
27. manufacturing method according to claim 15, wherein the part B1 and B2 some materials are being filled to the cavity In before, further include provide B1 part and B2 some materials;The material at least has one of following characteristic:
(1) the B1 some materials being later than in cavity at the time of the B2 some materials in cavity start to lose flowability are opened At the time of beginning loses flowability;
(2) the flowable time span of the B2 some materials in cavity is accomplished to contraction from mixing greater than B1 some materials and turns Length this period that break occurs;Mixing completion refers to that all the components of B1 material all mix and agitated Uniformly;
(3) it is later than the B1 some materials in cavity at the time of the B2 some materials in cavity start to lose flowability At the time of contraction turning point occurs;
(4) the contraction turnover for being later than B1 some materials at the time of the B2 some materials in air start to lose flowability is pointed out A moment after now;It is described shrink turning point occur after a moment determined by a time ratios, the ratio be to The ratio between the age of B1 material when shrinking turning point up to the age of the moment B1 material and arrival;The ratio be equal to 1.25 or 1.5 or 1.75 or 2.0 or 2.5 or 3 or 4 or 5 or 8 or 10 or 15 or 20 or 30 or 60 or 100;
(5) static strength for being later than B1 some materials at the time of the B2 some materials in cavity start to lose flowability reaches At the time of one intermediate intensity corresponds to, the intermediate intensity is the 10% or 20% or 30% or 40% or 50% of final static strength Or 60% or 70% or 80% or 90% or 95% or 98%.
28. according to claim 1 or 27 production methods, characterized in that the mobility is one of following characteristic:
(1) material does not have static shearing strength regardless of whether by acting by external hydrostatic pressure, or hardly has static shearing resistance Intensity;Described hardly have static shearing strength and refer to, compared with the final static shearing strength of curable material, when described The static shearing strength at quarter is very small, only several a ten thousandths of final strength to ten parts;
(2) material does not have static uniaxial compressive strength, or hardly has static uniaxial compressive strength;It is described hardly to have Static space refers to, compared with the final static space of curable material, the static space at the moment is non- Often it is small, only several a ten thousandths of final strength to ten part;
(3) when being acted on by the shear force of any very little, continuous modification can all occur;The shearing force of the very little refers to, cuts in application At the time of shear force, shearing force is only several a ten thousandths of the final static shearing strength of curable material to ten parts.
29. manufacturing method according to claim 15, wherein to B1 the and/or B2 some materials apply pressure it Before, further includes:
It determines and stressed range is applied to the part the B2 and/or B1;And
It determines and applies stressed time range, the application pressure, which refers to, increases pressure and/or maintenance constant pressure.
30. manufacturing method according to claim 15, wherein applied on stressed to B1 the and/or B2 some materials Section where limit are as follows: 0.1~7MPa or 7~15MPa or 15~30MPa or 30~60MPa or 60~90MPa or 90~ 120MPa, or it is greater than 120MPa.
31. production method described in any one of 5 or 26 to 28 according to claim 1, wherein there is stream in B2 some materials The portion B2 in certain time period or certain several period or whole process in the time range of dynamic property, directly in extruding cavity Divide material, so that the pressure of B2 some materials is reached the range of design requirement, the B2 some materials transmit pressure to the portion B1 again Point.
32. production method described in any one of 5 or 26 to 28 according to claim 1, wherein there is stream in B2 some materials In the time range of dynamic property, maintain the pressure of B2 some materials in cavity in pre-set pressure range within a continuous period It is interior;
It is engraved in the time range of one of at the beginning of the continuous period:
B1 the and B2 material of place in the cavities all has in the time range of mobility;
It is in after B1 material loses flowability, before the contraction turning point of B1 material occurs;
The finish time of the continuous period is in the time range of one of:
After B1 material loses flowability, before the contraction turning point of B1 material occurs;
After the contraction turning point of B1 material occurs, the mobility of B2 material was lost before the moment.
33. production method described in any one of 5 or 26 to 28 according to claim 1, wherein to the portion B1 and/or B2 Material is divided to apply stressed method including at least following one:
(1) with the material of the part B1 and/or the part B2 in piston press cavity, B1 the and/or B2 some materials are applied Pressure;
(2) with the cavity connection and be full of the pipeline of B2 material, the part B2 and/or B1 material therefor into cavity Transmit pressure;Preferably, it with the pipeline cavity connection and full of B2 material, is connected to where the part B2 in cavity Region;
(3) with the pipeline cavity connection and full of B1 material, B2 the and/or B1 some materials into cavity are transmitted Pressure;
(4) built-in volume compensation device is installed in the cavity, using the volume compensation device to the portion B1 and/or B2 Give plus-pressure.
34. production method described in 5,29 or 33 according to claim 1, wherein the built-in volume compensation device is placed on sky In chamber in the partial region B2, when the B1 some materials of the cavity inside are shunk, and the B2 some materials have When having mobility or rheology can occur, the volume compensation device is expanded, and is applied pressure to the part B2, is pushed institute The material for stating the part B2 fills up the volume that the B1 portion retracts fall;
Preferably, the built-in volume compensation device is air bag or liquid capsule;
The air bag is connect by pipeline with the air pump except composite structure, and air pressure when air pump works in air bag is stepped up, Air pressure in air bag is applied to the pressure on surrounding medium no better than air bag, when the air pressure in air bag enters the model that design is wanted After in enclosing, air pressure is maintained to change in the range;
The liquid capsule is connect by pipeline with the hydraulic power source except composite structure, and hydraulic power source pushes fluid pressure to increase, in liquid capsule It is hydraulic be applied to the pressure on surrounding medium no better than liquid capsule, after pressure enters in the range of design requirement, maintain It is hydraulic to change in the range.
35. production method according to claim 33, wherein
(1) when in piston press cavity B1 part and/or the part B2 material when, being also filled with one or more can flow Dynamic B2 material pipe connect the B2 material area in cavity with external volume compensation device;
(2) when with the cavity connection and be full of the pipeline of B2 material, material used in the part B2 and/or B1 into cavity When material transmitting pressure, also with the cavity connection and the one or more external volumes of connection on pipeline full of B2 material Compensation device, alternatively, with one or more be filled with flowable B2 material pipe in cavity B2 material area with it is external Volume compensation device connects.
36. according to production method described in claim 31,32 or 35, wherein in connection part A cavity and external volume compensation Valve is provided on the pipeline of device;During maintaining the pressure of the B2 material in cavity to change in scope of design, institute State what valve was to turn on, at this moment the medium in pipeline can be with inflow and outflow;The a certain moment before B2 material loses flowability, Valve is closed, the medium in pipeline cannot flow;External volume compensation device is laid down, curable material therein is cleaned out, To allow external volume compensation device may be reused.
37. production method according to claim 33, wherein with the cavity connection and be full of B2 material pipe Road, during the part the B2 and/or B1 material therefor into cavity transmits pressure, the other end of pipeline is connected to pressurizing device On, loading device maintains the pressure in pipeline in the range of design requirement;It is provided with valve on the pipeline, in B2 material Mobility lose before a certain moment, close valve, lay down pressurizing device, pressurizing device is cleaned, to reuse.
38. production method according to claim 33, wherein
(1) when using the material of the part B1 and/or the part B2 in piston press cavity, maintenance is applied to piston rod outer end Pressure is until B2 material has a predetermined strength;The predetermined strength can resist the pressure because removing piston rod outer end due to generate Stress variation;
(2) when using pipeline to transmit pressure, the pressure of the B2 or B1 material in pipeline is maintained until B2 or B1 material has There is a predetermined strength;The predetermined strength, which can be resisted, generates stress variation because of sawed-off pipeline;The pipeline is and the cavity Connection, and full of B2 or B1 material;
(3) when using built-in volume compensation device to pressurize to B2 and/or B1 some materials, built-in volume compensation device is maintained In pressure medium until B2 and B1 material all there is predetermined strength, the predetermined strength can resist because built-in volume compensation fill It sets and pressure is not provided and generates stress variation.
39. production method described in any one of 5 or 26 to 28 according to claim 1, wherein the part B2 material in the cavities Expect in the time range that there is opposite high fluidity than B1 material, in certain time period or certain several period wherein or whole A process squeezes the B2 material in cavity, allows pressurizing unit to increase extruding force or maintains constant extruding force.
40. production method according to claim 39, characterized in that the B2 some materials ratio B1 some materials tool in cavity There is opposite high fluidity, and B1 material has shearing strength;In time range under the conditions of meeting this, in cavity B2 material squeezed, allow pressurizing unit to increase extruding force or maintain constant extruding force.
41. the production method according to claim 39 or 40, characterized in that lived when squeezing B2 material using pressurization Plug and/or built-in volume compensation device;When pressurizing unit is piston, the constant extruding force of the application refers to, maintains to apply Load to piston outer end is constant;When pressurizing unit is built-in volume compensation device, the constant extruding force of the application refers to, protects The Fluid pressure held in air bag or oil sac is constant.
42. the production method according to claim 38, characterized in that stressed to applying for the material in cavity in completion After process, the post-processing also carried out to the pressurizing device, the method for use is following one:
(1) if pressurizing device is pressurizing piston, the exposed parts of sawed-off piston;
(2) if pressurizing device be with the pipeline of cavity connection and external pressurizing device, lay down pressurizing device, it is sawed-off to be full of B2 Material line;
(3) if pressurizing device is built-in volume compensation device, gas or liquid therein are bled off, injects solidifiable material thereto Material.
43. manufacturing method according to claim 15, wherein before filling the part B1 in the cavity or by B2 Before part fills in the cavity, further includes: be filled with carbon dioxide gas in Xiang Suoshu cavity.
44. a kind of composite structure, characterized in that its production method is the production side as described in any one of claim 15 to 43 Method.
CN201910240997.0A 2018-03-27 2019-03-27 Composite structure and preparation method thereof Pending CN110306726A (en)

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