CN109440969A - Assembly shear wall vertically stitches connection structure and its accessory, application, calculating and construction - Google Patents

Assembly shear wall vertically stitches connection structure and its accessory, application, calculating and construction Download PDF

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Publication number
CN109440969A
CN109440969A CN201811573886.3A CN201811573886A CN109440969A CN 109440969 A CN109440969 A CN 109440969A CN 201811573886 A CN201811573886 A CN 201811573886A CN 109440969 A CN109440969 A CN 109440969A
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CN
China
Prior art keywords
shear wall
wall body
body unit
precast shear
connecting elements
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CN201811573886.3A
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Chinese (zh)
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刘祥锦
刘俊彦
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Individual
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Individual
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Priority to CN201811573886.3A priority Critical patent/CN109440969A/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
    • E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
    • E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/10—Geometric CAD
    • G06F30/13—Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads

Abstract

The invention discloses a kind of assembly shear walls vertically to stitch connection structure and its accessory, application, calculating and construction, and it is that the first precast shear wall body unit and the second precast shear wall body unit are linked together by connecting elements that the assembly shear wall, which vertically stitches connection structure,；Described connecting elements one end anchors into the second precast shear wall body unit, and the other end is anchored at the one the second precast shear wall body units；There are stretch-draw prestressing forces in vertically seam connection structure for the connecting elements, connection faying face mutual extrusion under the pulling force effect of connecting elements of the first precast shear wall body unit and the second precast shear wall body unit, and be fixedly connected under frictional force and the collective effect of the stretch-draw prestressing force of connecting elements.The assembly shear wall vertically stitches the connection structure advantage good, easy for construction, high-efficient with anti-seismic performance.

Description

Assembly shear wall vertically stitches connection structure and its accessory, application, calculating and construction
Technical field
It is specially a kind of the present invention relates to assembly of shear wall structure design, the special-purpose assorted product of engineering and construction method Assembly shear wall vertically stitches connection structure and its accessory, application, calculating and construction.
Background technique
At present fabricated shear wall vertically stitch between connection be using reinforcing bar connection and rear pouring concrete type of attachment, Or the type of attachment using reinforcing bar connection and post-grouting.Wherein, using in the type of attachment of reinforcing bar connection and rear pouring concrete Reinforcing bar connection will use effective connection type and meet specific connection length, also to carry out installation template and concrete pours It builds, this belongs to a kind of wet connection operation element.Using the type of attachment of reinforcing bar connection and post-grouting according to specification " assembled coagulation Soil pours calculating standard GB/51231-2016 " in connection type, there is the node that cannot be constructed in this connection type.In addition, The mounting technology in China cannot achieve assembly connection system suitable or better with the anti-seismic performance of cast-in-place concrete structure at present.
Summary of the invention
The present invention provides a kind of assembly shear wall and vertically stitches connection structure to overcome the shortcomings of the prior art, The assembly shear wall vertically stitches the connection structure advantage good, easy for construction, high-efficient with anti-seismic performance.
Second object of the present invention is to provide a kind of shearing for vertically stitching connection structure using above-mentioned assembly shear wall Wall vertically stitches linked system.
Third object of the present invention is to provide a kind of shearing resistance carrying for vertically stitching linked system for above-mentioned shear wall The calculation method of power.
Fourth object of the present invention is to provide a kind of connection for vertically stitching connection structure for above-mentioned assembly shear wall Component.
Of the invention the 5th is designed to provide a kind of connection that connection structure is vertically stitched for above-mentioned assembly shear wall The construction method of component.
The technical solution that the present invention solves above-mentioned technical problem is:
A kind of assembly shear wall vertically stitches connection structure, and it is to pass through connecting elements which, which vertically stitches connection structure, First precast shear wall body unit and the second precast shear wall body unit are linked together；It is pre- that the connecting elements passes through first Hole on shear wall unit processed enters the second precast shear wall body unit, and one end anchors into the second precast shear wall body unit Interior, the other end is anchored in the first precast shear wall body unit；That there are tensioning is pre- in vertically seam connection structure for the connecting elements Drawing of the connection faying face of stress, the first precast shear wall body unit and the second precast shear wall body unit in connecting elements Power acts on lower mutual extrusion, and is fixedly connected under frictional force and the collective effect of the stretch-draw prestressing force of connecting elements；It is described perpendicular Faying face, which is connected, to the side that seam is the first precast shear wall body unit connect faying face with the side of the second precast shear wall body unit Joint.
Preferably, the connecting elements is between the stress point and the vertical seam that the first precast shear wall body unit anchors Distance and connecting elements the second precast shear wall body unit anchoring stress effect farthest point and the vertical seam between Distance be all larger than the cross section radial dimension of the connecting elements equal to 5 times；The connecting elements passes through the first precast shear wall body The hole of unit, the vertical dimension of the hole of the first precast shear wall body unit are more than or equal to the cross section of the connecting elements Radial dimension plus the connecting elements load stress point to the sum of 1/50th of the distance vertically stitched.
Preferably, the hole of the first precast shear wall body unit is communicated with its surface, the connecting elements directly from The insertion of first precast shear wall body unit surface.
Preferably, the connected component institute in the first precast shear wall body unit and the second precast shear wall body unit The hole passed through carries out perfusion cementitious material processing；Intensity, which is lower than, after the solidification of injecting glue gel material is equal to the first precast shear wall body list The intensity of member and the second precast shear wall body unit, but it is more than or equal to C20 concrete strength.
Preferably, in the connection structure of linear type shear wall, the connecting elements is from the first precast shear wall body unit Surface penetrate, and the connecting elements is in conjunction with the connection of the first precast shear wall body unit and the second precast shear wall body unit Face oblique；And shape is at T-shaped or L-shaped connection knot between the first precast shear wall body unit and the second precast shear wall body unit Structure；The connecting elements is penetrated from the surface of the first precast shear wall body unit, the connecting elements and the first precast shear wall body The connection faying face of unit and the second precast shear wall body unit intersects vertically.Connection construction can be made more convenient in this way, thus It improves efficiency.
Preferably, the connecting elements is steel strand wires or steel wire, and the steel wire or wire prefabricated are cut from interconnected Power wall element surface penetrates, and after the arc hole inside precast shear wall body unit, the steel strand wires or steel wire are vertically passed through Cross connection faying face.It can make the tension stress of connecting elements maximum effectively in this way, equally can also be improved the reliable of connection Degree.
A kind of assembly shear wall vertically stitches the shear wall of connection structure and vertically stitches linked system, including precast shear wall body list First, the described assembly shear wall vertically stitches connection structure and the horizontal connection structure positioned at the vertical seam upper and lower ends, the dress It is by connecting elements the first precast shear wall body unit and the second precast shear wall body that connection structure is vertically stitched with shear wall Unit links together；The hole that the connecting elements passes through the first precast shear wall body unit enters the first precast shear wall body Unit, and one end anchors into the second precast shear wall body unit, the other end is anchored in the first precast shear wall body unit；The company Connection member vertically stitches in connection structure in assembly shear wall there are stretch-draw prestressing force, the first precast wall body unit and second pre- Connection faying face mutual extrusion under the pulling force effect of the connecting elements of shear wall unit processed, and in frictional force and connection structure It is fixedly connected under the collective effect of the stretch-draw prestressing force of part；The vertical seam is that the side of the first precast shear wall body unit connects knot Conjunction face connect the joint of faying face with the side of the second precast shear wall body unit；
It is one or more that the shear wall, which vertically stitches the connecting elements in linked system, and type of attachment is one kind Or more than one；
The horizontal connection structure of the upper and lower ends vertically stitched penetrates through the vertical seam, i.e., the vertical seam is discontinuous knot Structure；The horizontal connection structure of the upper and lower ends vertically stitched is the first precast shear wall body unit and the second precast shear wall body Unit links together, and the horizontal reinforcement in the horizontal reinforcement or horizontal connection structure in the horizontal connection structure and tiltedly it is right Angle arrangement of reinforcement is straight-through to cross over the vertical seam.
Preferably, the vertical edges of the first precast shear wall body unit and the second precast shear wall body unit are all arranged There is edge member.
Preferably, the vertical edges of the first precast shear wall body unit and the second precast shear wall body unit are all arranged There is edge member, the edge member meets " Code for design of concrete structures GB50010 ", " seismic design provision in building code GB50010 ", the requirement of " technical specification for concrete structures of high-rise building JGJ3 ".Building by this method assembly can be improved in this way The shock resistance built.
Preferably, the horizontal connection structure of the upper and lower ends vertically stitched is cast-in-place concrete coupling beam structure, the company Beam is the exclusive structure type of concrete structure.
A kind of calculation method for the shear-carrying capacity vertically stitching linked system for shear wall, the vertical company of seam of the shear wall The shear-carrying capacity of junctor system is that assembly shear wall vertically stitches shearing resistance design value provided by connection structure and vertically sews on down The sum of shearing resistance design value of the horizontal connection structure at both ends；The assembly shear wall vertically stitches shearing resistance provided by connection structure Power design value is equal between the first precast shear wall body unit and the connection faying face of the second precast shear wall body unit Frictional force or equal to connecting elements shearing resistance and the first precast shear wall body unit and the second precast shear wall body unit company Connect the sum of the frictional force between faying face.
Preferably, it is pre- equal to described first vertically to stitch shearing resistance design value provided by connection structure for the assembly shear wall Frictional force between shear wall unit processed and the connection faying face of the second precast shear wall body unit, formula are as follows: Vg=μ Np, this Formula is suitable for the case where not being in the milk in hole, and μ is the coefficient of friction between the connection faying face of precast shear wall body unit；Institute It states assembly shear wall and vertically stitches shearing resistance design value provided by connection structure in advance equal to the shearing resistance of the connecting elements and first The sum of frictional force between shear wall unit processed and the connection faying face of the second precast shear wall body unit, formula are as follows: Vg= [μβ+(1-β)0.5]fyAS, this formula be suitable for hole be in the milk the case where, β NpWith fyASRatio, i.e. β=Np/fyAS；Antidetonation The calculation formula of shearing resistance design value provided by the connecting elements under design conditions are as follows: VgE=μ Np+0.6fyAS=[μ β+ 0.6]fyAS；In formula: VgAnd VgERespectively the shearing resistance design value of connecting elements and antidetonation situation shearing resistance design value, fyFor even The shearing strength design value of connection member, ASThe sectional area of vertical connection faying face, N are passed through for connecting elementspFor hanging down for connecting elements That directly vertically stitches effective pre- answers stretching force design value；The shearing resistance design value of the horizontal connection structure of the upper and lower ends presses beam Shearing resistance designs value calculating method and calculates.
A kind of connecting elements vertically stitching connection structure for assembling shear wall, the connecting elements are a kind of intumescent anchors Bolt, the intumescent anchor bolt include that screw rod, expansion piece and internal screw thread traveling nut or/and internal screw thread activity push away cone；The spiral shell Bar one end is to anchor into end equipped with external thread section, and the other end is that screw head or the screw rod both ends are designed with thread segment；The anchor Enter end and be provided with internal screw thread activity to push away cone or internal screw thread traveling nut；The screw rod is equipped with obstacle, and the obstacle is to use In stopping the object that relatively moves of expansion piece, or make expansion piece distending push away cone.
Preferably, whole of the screw rod of the intumescent anchor bolt is both provided with external screw thread.This is screw rod both ends setting external screw thread Continuity special circumstances, in favor of grouting anchoring.
Preferably, the obstacle on the screw rod is integrated with screw rod, which anchors into end for screw rod Projection or the obstacle at screw head are the spiral shell with the screw rod of screw rod anchored into end at screw head The internal screw thread activity of line section cooperation pushes away cone or internal screw thread traveling nut.
A kind of construction method for vertically stitching the connecting elements of connection structure for assembling shear wall, assembly shear wall vertically stitch The construction of the connecting elements of connection structure takes following corresponding method according to the difference of the intumescent anchor bolt of connection:
(1) screw rod one end be equipped with external thread section anchor into end, the other end be screw head intumescent anchor bolt construction method packet Include following operation element:
(1-1) hole-opening and cleaning hole in precast shear wall body unit；
(1-2) carries out injection cementitious material to hole, the injection rate of injected cementitious material need to meet intumescent anchor bolt and The sum of cementitious material volume is more than or equal to pore volume；
(1-3) is inserted into the intumescent anchor bolt regulated, i.e., the described intumescent bolt must make swollen before insertion anchors hole Swollen part pushes away cone with internal screw thread traveling nut and internal screw thread activity and comes into full contact with, so that internal screw thread traveling nut, expansion piece and interior spiral shell Line activity pushes away cone three and is in contact condition；
(1-4) tightens intumescent anchor bolt, and intumescent anchor bolt is made to reach tension stress and securely require；Wherein, the control tightened Method processed is: torque value when intumescent anchor bolt is tightened reaches the distance that code requirement and internal screw thread traveling nut are screwed into and reaches Required value；
Wherein, in operation element (1-1), when being provided with hole in precast shear wall body unit, then this operative employee is omitted Make；In operation element (1-2), if you do not need to perfusion cementitious material, then omit this operation element；
(2) it includes following primary operational work that the both ends of screw rod, which are equipped with the intumescent anchor bolt construction method of external thread section:
(2-1) hole-opening and cleaning hole in precast shear wall body unit；
Grout pipe is inserted into hole bottom by (2-2), injects gelling by hole of the grout pipe to the second precast shear wall body Material, injection rate need to meet the pore volume of the sum of intumescent anchor bolt and cementitious material volume equal to the second precast shear wall body 80%-105%；
(2-3) is inserted into the intumescent anchor bolt regulated, i.e., the described intumescent bolt must make swollen before insertion anchors hole Swollen part both ends push away cone with internal screw thread traveling nut or/and internal screw thread activity and come into full contact with, so that internal screw thread traveling nut, expansion piece Contact condition is in obstacle three；
(2-4) tightens the screw rod and internal screw thread traveling nut of intumescent anchor bolt, makes screw rod and internal screw thread traveling nut together Rotation, makes intumescent anchor bolt reach preliminary tension stress requirement；The control method tightened is: turning screw rod and internal screw thread movable screw Female torque value reaches corresponding requirements；
(2-5) after the anchoring cementitious material adhesive curing in the hole of the second precast shear wall body reaches predetermined strength, then Second of progress is tightened to the internal screw thread traveling nut of outer end and applies prestressing force, the torque value for turning internal screw thread traveling nut reaches It is required that；
Wherein, in operation element (2-1), when being provided with hole in precast shear wall body unit, then this operative employee is omitted Make；It needs to operate continuously in operation element (2-2)-(2-4), and starts to anchor preceding completion in cementitious material.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1, assembly shear wall of the invention vertically stitches connection structure, using dry construction；Its connecting elements is to apply to answer in advance The component of power has the advantages that crack resistance is good, easy for construction and anti-seismic performance is good；Its anti-seismic performance for assembling building meets country Existing specification, and the design of anti-seismic performance can be carried out in conjunction with concept using digitalization index (and assembling building at present can only do To conceptual design antidetonation).It is that current technology does not occur, with originality using the shear wall mounting technology that prestressing force carries out Invention.
2, it will be a kind of standardized pre- that assembly shear wall of the invention, which vertically stitches the shear wall prefabricated unit of connection structure, To the product of letter, the vertical connection faying face of shear wall prefabricated unit, which does not need to reserve to stretch out, vertically to be connected in product product --- main road The attachment of faying face is connect, to greatly reduce the manufacturing cost of prefabricated mould, so that mold (template) form type of factory It is greatly reduced, while improving production efficiency, so that precast shear wall body unit product becomes standard product, for assembly building Structural elements standardization provides a kind of feasible scheme.
3, the water of the upper and lower ends of connection structure and precast shear wall body unit is vertically stitched by assembly shear wall of the invention The system that is completely linked and packed for the assembly shear wall that flushconnection structure is combined into, shear wall structure system is vertically connected with (prefabricated to cut The horizontal connection structure of power wall element upper and lower ends) it is strong node connection, and the connection of vertical direction is Weak link；This wound It is newly the invention of great significance and progress of design method, there is very high economic value and science.It is in particular in that horizontal connection can It combining with floor, is vertically connected as dry construction, speed of application is improved largely compared with current technology, and combine Structure meets the shockproof requirements that China standardizes at present, has multiple tracks earthquake resistant construction, in normal (such as wind action and Chang Yu little Earthquake) situation using when vertically seam be work of not cracking, meet the rigidity of use condition, the building made has very high degree of comfort. Cracking resistance is vertically stitched in meeting seismic fortification intensity (middle shake) situation, while absorbing earthquake shock, the rigidity of the building made subtracts Small (i.e. building is opposite becomes soft), to reduce impact of the latter earthquake to building, but at this time since the shear wall of building is vertical It is complete connection (pouring strong ties node after horizontal), therefore the weight of whole building can be born, so that building is reached middle shake can Repairing and repairing is also in specific position, with ad hoc approach (Prestressing connecting elements can be repaired again).This assembly shearing Wall construction system is to surmount current all technologies, has originality.
4, the upper and lower ends level that the present invention vertically stitches connection structure and precast shear wall body unit to assembly shear wall connects The shear wall that binding structure is combined into completely is linked and packed system, and provides bearing capacity meter to the connection of assembly shear wall vertically stitched Calculation method, this addresses the problem the design considerations of application of the invention；Design and calculation method of the invention is current national regulation All do not occur with pertinent regulations, i.e., " Code for design of concrete structures GB50010 ", " seismic design provision in building code GB50010 ", " technical specification for concrete structures of high-rise building JGJ3 " and " prefabricated concrete structure technical regulation JGJ1-2014 " etc. do not have Relevant calculation is a kind of innovation and application technology.
5, the intumescent anchor bolt of the connecting elements in the present invention is prestressed anchor bolt, is a kind of expansible type anchor bolt Product, anchors into that depth is constant, that is, anchor pole is not displaced outwardly when tightening, which eliminates in addition to expansion piece (expansion tube) Other sleeves, from enabling the stress of tensioning all to apply and the first precast shear wall body unit and the second precast shear wall body list Member makes the stress of screw rod all act on vertical seam connection faying face.In addition, the intumescent anchor bolt has anchor pole solid and reliable The advantage not protruded with outer end, the intumescent anchor bolt be highly suitable as prestressing force drawknot connecting elements and shearing resistance it is (existing The intumescent anchor bolt of technology is based on resistance to plucking, its shearing resistance is also at concrete surface, and the intumescent anchor bolt of the prior art is resistance to plucking Based on, its shearing resistance also at concrete surface, due to existing product have full buried depth sleeve entangle screw rod, the stretching force of screw rod and it is complete Buried depth sleeve is pressurized, and can not be converted into the pressure of concrete surface between vertical seam))；The intumescent anchor bolt is for shear wall company Connect matched innovative product.
6, it is a kind of collection chemical anchor bolts that use intumescent anchor bolts shear-wall element of the invention, which vertically stitches construction method, It with mechanical anchor in the connection of one, can according to need using different intumescent anchor bolts, the expansion anchor of use is a kind of new Product has shear behavior good (in the case of the same steel using amount of existing expansion anchor comparison), realizes high pre-stress connection or fast Fast connection type convenient for control quality and improves efficiency.
Detailed description of the invention
Fig. 1 is the shear wall plan view in the present invention.
Fig. 2 is that the elevation of Fig. 1 and shear wall of the invention vertically stitch linked system schematic diagram.
A-A sectional view and shear wall of the invention that Fig. 3 is Fig. 1 vertically stitch the connection sectional view of linked system.
Fig. 4 is the B-B sectional view in Fig. 3, i.e., assembly shear wall of the invention vertically stitches one He of case in connection structure Two drawing in side sectional elevation.
Fig. 5 is (C-C of Fig. 6) sectional view for the case three that assembly shear wall of the invention vertically stitches connection structure.
Fig. 6 is the elevation for the case three that assembly shear wall of the invention vertically stitches connection structure.
Fig. 7 is the plan view for the case four that assembly shear wall of the invention vertically stitches connection structure.
Fig. 8 is the elevation for the case four (Fig. 7) that figure assembly shear wall of the invention vertically stitches connection structure.
Fig. 9 vertically stitches the shear wall plane of second embodiment of connection structure for the assembly shear wall in the present invention Figure.
Figure 10-Figure 13 is the schematic diagram of the case one of intumescent anchor bolt of the invention.
Figure 14-Figure 15 is the schematic diagram of the case two of intumescent anchor bolt of the invention.
Figure 16-Figure 17 is the schematic diagram of the construction connection case one of intumescent anchor bolt of the invention.
Figure 18-Figure 19 is the schematic diagram of the construction connection case two of intumescent anchor bolt of the invention.
In figure, 1- precast shear wall body unit, 2- is vertically stitched, the horizontal connection of 3- precast shear wall body unit upper and lower ends Structure, 4- shear wall edge member, the edge member of 4a- precast shear wall body unit, 5- connecting elements, 6- cementitious material, 7- The stirrup of horizontal connection structure is poured after precast shear wall body unit upper and lower ends, 8- precast shear wall body unit upper and lower ends are horizontal The diagonally opposing corner arrangement of reinforcement of connection structure, the horizontal reinforcement of the horizontal connection structure of 9- precast shear wall body unit upper and lower ends, 10- are pre- The vertical connection reinforcing bar of the horizontal connection structure of shear wall unit upper and lower ends processed；The screw head of 11- intumescent anchor bolt, 12- The screw rod of intumescent anchor bolt, conical ring (the internal screw thread activity of form a), 14- intumescent anchor bolt of the obstacle of 13- intumescent anchor bolt Nut, the single-ended expansion tube (expansion piece) of 15- intumescent anchor bolt, the both ends expansion tube (both ends expansion piece) of 16- intumescent anchor bolt, 17- pushes away cone, the throw-out collar (projection (form of the obstacle of form b), 19- intumescent anchor bolt of the obstacle of 18- intumescent anchor bolt C), the thread segment on 20- screw rod.
Specific embodiment
Present invention will now be described in further detail with reference to the embodiments and the accompanying drawings, but embodiments of the present invention are unlimited In this.
Shear wall of the present invention is the noun of " technical specification for concrete structures of high-rise building JGJ3-2010 " and " mixes Xtah Crude Clay structure design specification GB50010-2010 " described in wall, and " seismic design provision in building code GB50011-2010 " is described Seismic structural wall, earthquake resistant wall, be same building structure vertical member.
Fig. 3-Fig. 8 show assembly shear wall and vertically stitches 2 connection structures, wherein the assembly shear wall is mixed for assembled Xtah Crude Clay structure shear wall, the precast shear wall body unit 1 is by connecting elements 5 the first precast shear wall body unit 1 and the Two precast shear wall body units 1 connect.The hole that the connecting elements 5 passes through the first precast shear wall body unit 1 enters Second precast shear wall body unit 1, one end anchor into the second precast shear wall body unit 1, and the other end anchors the first prefabricated shearing On wall element 1.There are tensile stresses for the connecting elements 5.The first precast shear wall body unit 1 and the second precast shear wall Body unit 1 connects faying face in the pulling force effect mutual extrusion of connecting elements 5, and in the tensioning of frictional force and connecting elements 5 It is fixedly connected with the first precast shear wall body unit 1 with the second precast shear wall body unit 1.
Referring to Fig. 1-Fig. 8, the connecting elements 5 is mechanical anchor (including intumescent anchor bolt) or chemical anchor bolts or anchor Bar or deformed bar or prestress wire or compressor wire or bolt；Wherein, the bolt is by being embedded in second Nut and screw rod in precast shear wall body unit 1 are constituted.
Referring to fig. 4, the stress point in the anchoring of the first precast shear wall body unit 1 of connecting elements 5 vertically stitches it with described Between distance L1More than or equal to the cross section radial dimension d of 5 times of connecting elements, i.e. L1≥5d；Connecting elements 5 prefabricated is cut second Power wall element 1 anchors the distance between stress effect farthest point and the vertical seam L2More than or equal to the cross of 5 times of connecting elements Cross-section radial size d, i.e. L2≥5d；(Fig. 4 a left side shown in) connecting elements 5 passes through the hole of the first precast shear wall body unit 1 simultaneously Hole, the cross dimensions d that the vertical dimension D of the hole of the first precast shear wall body unit 1 is more than or equal to connecting elements 5 add L1/ 50 >=5d/50, i.e. case D >=d+L1/50mm.This improvement can further be such that assembling structure consumes with better antidetonation Can, principle is the stress point distance length L of connecting elements 51Than 5 times or more of the cross dimensions d of connecting elements 5, so that even Connection member 5 is in flexible or rotation state, destroys connecting elements 5 for direct shearing, the building structure in earthquake Ability with flexible deformation can preferably improve energy dissipation ability, L2Size, which can guarantee, to be anchored and prevents stress excessively It concentrates.
The hole diameter of-Fig. 8 referring to fig. 4, the first precast shear wall body unit 1 are communicated with its surface, the connection Component 5 is directly inserted into from surface.It is acted in addition to convenient for construction, improving efficiency, and be can guarantee wall integrality, is not impaired, most The effective cross-section of limits holding precast wall body unit.
Referring to Fig. 3-4 and Fig. 8, the hole in the vertical seam 2 and precast shear wall body unit 1 carries out perfusion cementitious material (cementitious material is mortar 6) processing.Cementitious material is 6 intensity of mortar lower than the strength of materials of precast shear wall body unit 1 but big In equal to C20 concrete strength.Due to the material on 5 periphery of connecting elements be first corrupted such that connecting elements 5 be in can have rotation State, this improvement can be further improved the shock resistance and waterproof performance of assembling structure.
Referring to Fig. 3, Fig. 4 and Fig. 8, the hole that the connected component 5 in the precast shear wall body unit 1 passes through, to it Grouting treatment is carried out, grouting material is that cementitious material 6 is mortar；This improvement can be further improved the shear resistance of assembling structure And waterproof performance, so as to play a part of to protect connecting elements 5.
Referring to fig. 4, in the connection of linear type shear wall, the connecting elements 5 is from the first precast shear wall body unit 1 Surface penetrates and the connecting elements 5 with precast shear wall body unit 1 connect faying face oblique；(Fig. 5-8) is in the first prefabricated shearing At the connection structure of linear type or T shape (for L-shaped connection structure between wall element 1 and the second precast shear wall body unit 1 Also identical as T-type connection structure)；The connecting elements 5 is penetrated from the surface of the first precast shear wall body unit 1, the connection structure Part 5 and the vertical seam 2 intersect vertically (figure 5-8).It can make connection construction convenient, improve efficiency.
Referring to figure 5-8, the connecting elements 5 is steel strand wires or steel wire, and the steel wire or wire are from interconnected 1 surface of precast shear wall body unit penetrates, after the arc hole inside precast shear wall body unit 1, the steel strand wires or steel Silk passes perpendicularly through connection faying face.The tension stress of connecting elements 5 can be made maximum effectively in this way, equally the company of can also be improved The intensity connect.
The case one of 2 connection structures of vertical seam
Referring to Fig. 3 and Fig. 4, the connecting node on the left side is two mutually perpendicular first precast shear wall body unit, 1 Hes Second precast shear wall body unit 1, used connecting elements 5 is the bolt of embedded nut (internal thread steel cylinder), described Bolt one end passes through the hole in the first precast shear wall body unit 1, is screwed into spiral shell pre-buried in the second precast shear wall body unit 1 Female (internal thread steel cylinder), the tensile stress which generates in rundown process is the first precast shear wall body unit 1 and the Two precast shear wall body units, 1 drawknot together so that the first precast shear wall body unit 1 and the second precast shear wall body unit 1 Connection faying face (connection faying face use rough surface) squeeze mutually, and in the stretch-draw prestressing force of frictional force and connecting elements 5 Collective effect under be combined together, the i.e. connecting elements 5 that achieves a fixed connection makes two precast shear walls body list interconnected Member 1 is combined together, and prevents it from relatively moving.The first precast shear wall body unit 1 reserving hole (or bore Hole) diameter D be more than or equal to connecting elements 5 cross dimensions d add the connecting elements 5 attachment force (tensile stress) action center The L of the vertical seam 2 of distance1The sum of/50, i.e. D >=d+L1/50.Hole in the first precast shear wall body unit 1 can be reserved Or drilling, the diameter of described hole meets simultaneously to be arranged according to the diametric requirements of bolt；And the second precast shear wall body unit 1 Interior hole is proposed with drilling.
The connecting elements 5 of the case is also possible to chemical anchor bolts, and bolt chemical anchors solid glue is planted in (being anchored in) second Hole in precast shear wall body unit 1 tightens application with gasket and nut on the outside of the first precast shear wall body unit hole Stress.
2 connection structure cases two of vertical seam
Referring to Fig. 3 and Fig. 4, on the right of connecting node be the docking of two words 1 He of the first precast shear wall body unit Second precast shear wall body unit 1, used connecting elements 5 are intumescent anchor bolt, and the intumescent anchor bolt is sheared from first The hole of wall element 1 athwart connects faying face, anchors into the hole in the second precast shear wall body unit 1；Prefabricated shearing It is mortar that cementitious material 6 is perfused in the hole of wall element 1.The intumescent anchor bolt generates tensile stress handle in rundown process First precast shear wall body unit 1 and 1 drawknot of the second precast shear wall body unit together so that the first precast shear wall body unit 1 and second the connection faying face (connection faying face use rough surface) of precast shear wall body unit 1 squeeze mutually, and in frictional force It is combined together under the collective effect of the stretch-draw prestressing force of connecting elements 5, the i.e. connecting elements 5 that achieves a fixed connection makes mutually Two precast shear wall body units 1 of connection are combined together, and prevent it from relatively moving.The connecting node is pre- first Recess, connecting elements are reserved on shear wall unit 1 processed directly to be entered from surface, for use in applying for connecting elements 5 Work.Being installed with the hole of bolt in the second precast shear wall body unit 1 is also reserving hole；The vertical seam 2 and is installed with spiral shell The hole of bolt carries out grouting treatment, to increase bonding strength.
The stress point in the anchoring of the first precast shear wall body unit 1 of the connecting elements 5 of present case vertically stitches it with described Between distance L1More than or equal to the cross section radial dimension d of 5 times of connecting elements, i.e. L1≥5d；Connecting elements 5 prefabricated is cut second Power wall element 1 anchors the distance between stress effect farthest point and the vertical seam L2More than or equal to the cross of 5 times of connecting elements Cross-section radial size d, i.e. L2≥5d。
Present case provides a kind of connecting elements 5 in such a way that certain rake angle connects precast shear wall body unit 1.The company Connection member 5 can be designed as being respectively separated and alternately wear from the first precast shear wall body unit 1 and the second precast shear wall body unit 1 Enter；The connecting elements 5 can also be other types of attachment.
2 connection structure cases three of vertical seam
Its connecting node is that the first precast shear wall body unit 1 and second of two words docking is prefabricated referring to figs. 5 and 6 Shear wall unit 1, used connecting elements 5 are prestress wire (being also possible to steel wire), the prestress wire The reserved arc hole of the first precast shear wall body unit 1 is passed through from the surface of the first precast shear wall body unit 1, then vertically Reserving hole into the second precast shear wall body unit 1, and in another side surface of the second precast shear wall body unit 1 Anchorage is set, which is in S or reverse-s shape, the tensile stress handle that stretch-draw anchor prestress wire generates First precast shear wall body unit 1 and 1 drawknot of the second precast shear wall body unit together so that the first precast shear wall body unit 1 and second the connection faying face (connection faying face use rough surface) of precast shear wall body unit 1 squeeze mutually, and in frictional force It is combined together under the collective effect of the stretch-draw prestressing force of connecting elements 5, the i.e. connecting elements 5 that achieves a fixed connection makes mutually Two precast shear wall body units 1 of connection are combined together, and prevent it from relatively moving.First in the connecting node The hole that prestress wire is installed in precast shear wall body unit 1 and the second precast shear wall body unit 1 is reserving hole, institute Prestress wire both ends are stated to be anchored using dedicated anchor head.
Present case provides a kind of connecting elements 5 and enters precast shear wall body unit 1 interconnected with certain rake angle, and The connecting elements 5 is the connection combination for passing perpendicularly through the first precast shear wall body unit 1 and the second precast shear wall body unit 1 Face, the stress which generates can be applied to the connection faying face to the maximum extent, so as to generate bigger rub Wipe power.The connecting elements 5 can be designed as being respectively separated alternately from the first precast shear wall body unit 1 and the second prefabricated shearing Wall element 1 penetrates (shown in Fig. 6 facade).
2 connection structure cases four of vertical seam
Referring to figs. 7 and 8, connecting node is the first precast shear wall body unit 1 and the second prefabricated shearing of T shape docking Wall element 1, used connecting elements 5 are prestress wire, and the prestress wire is from the first precast shear wall body The surface of unit 1 passes through the reserved arc hole of the first precast shear wall body unit 1, then vertically into the second precast shear wall Reserving hole in body unit 1, and anchorage is set in another side surface of the second precast shear wall body unit 1, this is entire pre- Stress reinforcement stresses hole is in J or backward J-shaped, and the tensile stress that stretch-draw anchor deformed bar generates is the first precast shear wall body list Member 1 and 1 drawknot of the second precast shear wall body unit together so that the first precast shear wall body unit 1 and the second precast shear wall The connection faying face (connection faying face uses rough surface) of body unit 1 squeezes mutually, and in the tensioning of frictional force and connecting elements 5 It is combined together under prestressed collective effect, the i.e. connecting elements 5 that achieves a fixed connection makes two prefabricated shearings interconnected Wall element 1 is combined together, and prevents it from relatively moving.The first precast shear wall body unit 1 in the connecting node It is reserving hole with the hole for being installed with deformed bar in the second precast shear wall body unit 1, the deformed bar both ends are adopted It is anchored with dedicated anchor head.
Present case provides a kind of connecting elements 5 with vertically into precast shear wall body unit 1 interconnected, and the company Connection member 5 is the connection faying face for passing perpendicularly through the first precast shear wall body unit 1 and the second precast shear wall body unit 1, should The stress that connecting elements 5 generates can be applied to the connection faying face to the maximum extent, so as to generate bigger frictional force. The connecting elements 5, which can be designed as being respectively separated, alternately penetrates (figure from the not same surface of the first precast shear wall body unit 1 Shown in 7 sections), to reach the balance of dynamics.
Referring to figures 1-3, shear wall of the invention vertically stitches linked system and includes precast shear wall body unit 1, assembles and cut Power wall vertically stitches 2 connection structures and the horizontal connection structure 3 positioned at 2 upper and lower ends of the vertical seam, and the assembly shear wall is perpendicular It is that first precast shear wall body unit 1 and the second precast shear wall body unit 1 are connected by connecting elements 5 to 2 connection structures of seam It is connected together；Described 5 one end of connecting elements passes through the hole of the first precast shear wall body unit 1, and it is prefabricated that the other end anchors into second In shear wall unit 1；There are stretch-draw prestressing force in vertically 2 connection structures of seam, described second prefabricated cuts the connecting elements 5 Power wall element 1 connects faying face in the pulling force effect mutual extrusion of the connecting elements 5, and in frictional force and connecting elements 5 Stretch-draw prestressing force collective effect under be combined together, achieve a fixed connection；The vertical seam 2 is the first precast shear wall body The side connection faying face of unit 1 connect the joint of faying face with the side of the second precast shear wall body unit 1.
Referring to Fig. 3, the horizontal connection structure 3 of the upper and lower ends of the vertical seam 2 is through the vertical seam 2, i.e., this is vertical Seam 2 is discontinuous structure；The vertical seam 2 is passing through horizontal connection structure 3 the first precast shear wall body list with floor intersection Member 1 and the second precast shear wall body unit 1 link together, and the horizontal reinforcement 9 in the horizontal connection structure 3, or horizontal Horizontal reinforcement 9 and diagonally opposing corner arrangement of reinforcement 8 in connection structure is straight-through across the vertical seam 2；Match simultaneously in the horizontal connection structure There is stirrup 7.
The horizontal connection structure 3 can be set above the lower section of floor or floor, in addition setting with floor not phase The place of connection.
Referring on the right side of Fig. 3,2 junctions of the vertical seam are using perfusion cementitious material processing.Vertical seam 2 can be increased in this way Connection bearing capacity；(and the vertical seam in left side is not in the milk).
Referring to Fig. 9, the first precast shear wall body list, 1 and second the vertical edges of precast shear wall body unit 1 all set It is equipped with edge member 4, the edge member 4 meets " Code for design of concrete structures GB50010 ", " seismic design provision in building code GB50010 ", " technical specification for concrete structures of high-rise building JGJ3 " is related requires.It is can be improved in this way by this method assembly The shock resistance of building, the design of this method can make building reach very high anti-seismic performance (can surmount cast-in-place structural).
Referring to Fig. 1, the vertical edges under integrality after the completion of the precast shear wall body unit 1 of assembly are provided with side Edge component 4；And edge is arranged in each vertical edges of the precast shear wall body unit 1 of follow-on (shown in Fig. 9) connection Component 4a or 4；The edge member 4 meets Code for design of concrete structures GB50010 ", " seismic design provision in building code GB50010 ", " technical specification for concrete structures of high-rise building JGJ3 " is related requires.Shear wall edge member 4 is " concrete knot Structure design specification " noun, do not parse herein.Complete edge component 4 is arranged in each vertical edges of precast shear wall, And all edge members 4 meet specification and pertinent regulations, specification and pertinent regulations refer to " Code for design of concrete structures GB50010 ", the regulation of " seismic design provision in building code GB50010 ", " technical specification for concrete structures of high-rise building JGJ3 ", adopt Edge member 4a or 4 is set with each vertical edges of precast shear wall body unit 1, so that the shock resistance of assembly building Surmount the same type building of prior art assembly；The reason is that each precast shear wall body unit 1 is after vertical 2 cracking of seam It can be used as a complete vertical structure component；And the shear wall of technology assembly at present is only only under integrality and meets One vertical member of specification.
The edge member of following FIG. 9 is configured explanation by specification " seismic design provision in building code " requirement: assuming that all pre- The length of shear-wall element processed is 2000mm, wallboard thickness 200mm, and 7 degree of level-one components of providing fortification against earthquakes, setting is constrained edge Component, reinforcing steel indexes are greater than 0.3；The length L of the upper and lower side edge member 4 of the prefabricated unit component of that leftmost sideC= 0.3x2000=600mm, then edge member sleeper are 400mm and LCThe big person of/2=300mm, takes 400mm；And the rightmost side is pre- The length of the rightmost side edge member 4 of unit member processed is by complete shear wall length 2000+2000+200=4200mm, then LC =0.3x4200=1260mm, then edge member sleeper is 400mm and LCThe big person of/2=630mm, takes 630mm；And prefabricated list First length is the length L of 2000mm edge member 4aC=0.3x2000=600mm is 400mm；It is exactly edge shown in Fig. 9 The design that component 4 must meet entire shear wall (horizontal length is with 4200mm, vertical extension with 2000mm) is set up defences seismic requirements, And edge member 4a must meet the requirement of precast shear wall wall element (being a vertical member setting with 2000mm)；In figure The edge member of T shape junction is the leftmost edge component 4a dress of the middle section and intermediate prefabricated unit by left side prefabricated unit With being combined into, synthesis back edge component 4 must meet entire shear wall (horizontal length with 4200mm, vertical extension with Design 2000mm) is set up defences seismic requirements length 630mm, thus the leftmost edge component of intermediate precast shear wall body unit 1 4a length wants 430mm.
Shear wall vertically stitches linked system case
Referring to figures 1-4 and Fig. 9, the shear wall vertically stitch linked system (shown in Fig. 2) by precast shear wall body unit 1, assembly shear wall vertically stitches 2 connection structures and horizontal connection structure 3 assembles integral shear wall structure.The assembly shearing It is that precast shear wall body unit 1 is linked together by connecting elements 5 that wall, which vertically stitches 2 connection structures, the connecting elements 5 one The hole across the first precast shear wall body unit 1 is held, the other end anchors into the second precast shear wall body unit 1, the connection There are tensile stress, the connection faying faces of the first precast shear wall body unit 1 and the second precast shear wall body unit 1 for component 5 The mutual extrusion under the pulling force effect of connecting elements 5, and make under frictional force and the collective effect of the stretching force of connecting elements 5 One precast shear wall body unit 1 and the second precast shear wall body unit 1 are combined together, and are achieved a fixed connection.
Referring to Fig. 3, the horizontal connection structure 3 is upper layer precast shear wall body unit 1 and lower layer's precast shear wall body list Connection structure between member 1；The upper layer precast shear wall body unit 1 is in conjunction with the upper end of lower layer precast shear wall body unit 1 Face and lower end faying face are reserved with vertical connection reinforcing bar 10, the upper layer precast shear wall body unit 1 and lower layer's precast shear wall The reserved vertical connection reinforcing bar 10 of body unit 1 is attached and anchors at post-cast strip, and ties up with horizontal reinforcement 9 and conventional arrangement of reinforcement It pricks and constitutes framework of steel reinforcement (referring to the right place Fig. 3) or horizontal reinforcement 9, diagonally opposing corner arrangement of reinforcement 8 and conventional arrangement of reinforcement binding composition reinforcing bar Frame is connected the prefabricated shearing body unit and predetermined level component that are connected in the framework of steel reinforcement by pouring rear pouring concrete It is connected into one.
Referring to Fig. 3, the horizontal connection structure 3 penetrates through the vertical seam 2, i.e., vertical seam 2 is discontinuous structure, this is perpendicular Horizontal joint connecting sewing node is being used with horizontal crack structure intersection to seam 2.
Referring to Fig. 3, the horizontal connection structure 3 that right side vertically stitches 2 is coupling beam form structure: it is configured with the prefabricated shearing of stirrup Stirrup 7, the precast shear wall body unit upper and lower ends horizontal connection structure of horizontal connection structure are poured after wall element upper and lower ends Diagonally opposing corner arrangement of reinforcement 8 and precast shear wall body unit upper and lower ends horizontal connection structure horizontal reinforcement 9.
Shown in Fig. 3, shear wall vertically stitches the calculation method of the shear-carrying capacity of linked system, i.e. shear wall vertically stitches connection The shear-carrying capacity of system is that assembly shear wall vertically stitches shearing resistance design value provided by 2 connection structures and vertical about 2 seam The sum of the shearing resistance design value of horizontal connection structure 3 at both ends；The assembly shear wall vertically stitches to be resisted provided by 2 connection structures Shearing force design value be equal to the first precast shear wall body unit 1 and the second precast shear wall body unit 1 connection faying face it Between frictional force design value, or it is pre- equal to the shearing resistance design value of connecting elements 5 and the first precast shear wall body unit 1 and second The sum of frictional force design value between the connection faying face of shear wall unit 1 processed.Circular:
Situation one, assembly shear wall vertically stitch shearing resistance design value provided by 2 connection structures equal to described first prefabricated Frictional force design value between shear wall unit 1 and the connection faying face of the second precast shear wall body unit 1, formula are as follows: Vg =μ Np, this formula is suitable for the case where not being in the milk in hole, and μ is rubbing between the connection faying face of precast shear wall body unit Wipe coefficient；
Situation two, assembly shear wall vertically stitch shearing resistance design value provided by 2 connection structures equal to the connecting elements 5 Between shearing resistance design value and the connection faying face of the first precast shear wall body unit 1 and the second precast shear wall body unit 1 The sum of frictional force design value, formula are as follows: Vg=[μ β+(1- β)0.5]fyAS, this formula be suitable for hole be in the milk the case where, β Np With fyASRatio；The formula is to cut composite force situation in drawing according to connecting elements 5 to be derived by；Institute in the case of Aseismic Design The calculation formula for stating shearing resistance design value provided by connecting elements 5 is VgE=0.6fyAS+μNp=(μ β+0.6) fyAS；In formula: VgAnd VgERespectively the shearing resistance design value of connecting elements 5 and antidetonation situation shearing resistance design value, fyFor the shearing resistance of connecting elements 5 Strength failure criterion, ASThe sectional area of vertical connection faying face, N are passed through for connecting elements 5pFor the vertical vertical seam 2 of connecting elements 5 Effective pre- answer stretching force design value；The shearing resistance design value of the horizontal connection structure 3 of upper and lower ends presses the shearing resistance design of beam Value calculating method calculates, and calculation method professional grasps, and is not unfolded described.
Shear wall vertically stitches the calculating case of the shear-carrying capacity of 2 linked systems
Referring to the vertical seam on the right of Fig. 3, if the vertical seam 2 in a layer height is equipped with 3 (root) and answers intumescent anchor in advance The connecting elements 5 of bolt, diameter 20mm, sectional area 314mm2；The prestressing force virtual value that every intumescent anchor bolt applies is 30kN (having deducted stress loss)；The shearing strength of intumescent anchor bolt is 480N/mm2, friction coefficient μ=0.8 prestress hole do not fill Injecting glue gel material and perfusion cementitious material；
In the bearing capacity of non-earthquake state:
(1) cementitious material situation: V is not perfusedg=μ Np=0.8x3x30=72KN,
(2) prestress hole is in the milk, β=100000/ (314X480)=0.663
Vg=3 [μ β+(1- β)0.5]fyAS=(0.8x0.663+ (1-0.663)0.5) 3X314X480=491.5KN；
In the bearing capacity of earthquake state:
VgE=0.6fyAS+μNp=0.6x480x314x3/1000+72kN=343KN；
Horizontal connection structure 3 is the structure of a similar beam, and the shear-carrying capacity calculating of beam is set by specification concrete structure Count specification GB50010 " it carries out, this is the knowledge that professional grasps, therefore is not described.
Of the invention is a kind of intumescent anchor bolt for assembling shear wall vertically to stitch the connecting elements 5 of 2 connection structures, described Intumescent anchor bolt mainly includes that screw rod 12, expansion piece (15,16), internal screw thread traveling nut 14 or/and internal screw thread activity push away cone 17； Described 12 one end of screw rod anchors into end equipped with spiral shell section 20, and the other end is provided with screw head 11 or the both ends of the screw rod 12 are designed with Thread segment 20；It is described anchor into end and be provided with internal screw thread activity push away cone 17 or internal screw thread traveling nut 14；The middle part of the screw rod 12 Equipped with obstacle, there are four types of form, respectively conical ring 13, internal screw thread activities to push away cone 17, throw-out collar 18 and protrusion for the obstacle Object 19, the obstacle are the objects for stopping expansion piece (15,16) to relatively move, or to make expansion piece (15,16) Distending pushes away cone 17.
The symbol 15 in expansion piece (15,16) in the present embodiment is the single-ended expansion tube (expansion piece) of intumescent anchor bolt, Symbol 16 is the both ends expansion tube 16 (both ends expansion piece 16) of intumescent anchor bolt.
The obstacle and screw rod 12 are structure as a whole or bore 17 or interior spiral shell for the internal screw thread activity being attached on screw rod 12 Line traveling nut 14；When the obstacle and screw rod 12 are structure as a whole, the obstacle is the cone of protrusion in screw rod 12 Ring 13 or projection (18,19), or be variable cross-section screw rod 12, the variable cross-section screw rod 12 is by pushing away major diameter section excessively to diameter Lesser thread segment 20 constitutes conical ring 13.
The hacking that the setting of improvement intumescent anchor bolt pushes away cone 17 and both ends distending there are two internal screw thread activity shown in Figure 12 is swollen Tube expansion 16.It can effectively guarantee the depth of intumescent anchor bolt anchored into a little, more preferably guarantee degree of safety, the intumescent anchor bolt in this way There is no casing by outer segment.
Intumescent bolt case one (Figure 10-Figure 13)
Referring to Figure 10, the intumescent anchor bolt is variable cross-section screw rod 12, and the variable cross-section screw rod 12 is excessive by larger-diameter section To the lesser thread segment 20 of diameter constitutes (obstacle) conical ring 13, its effect makes expansion piece (15,16) distending；The variable cross-section spiral shell The outer end of bar 12 is screw head 11, and anchoring into end is thread segment 20, and configuration expansion piece (15,16) is to have single-ended expansion tube (expansion piece) 15。
Referring to Figure 11, intumescent anchor bolt setting obstacle (throw-out collar 18 of form b), effect make expansion piece (15, 16) it relatively moves, which is the integrated convex hole of screw rod 12；The outer end of the screw rod 12 is screw head 11, anchors into end Cone 17 is pushed away for thread segment 20 and in end configuration internal screw thread activity, the expansion piece (15,16) of configuration is to have single-ended expansion tube (swollen Swollen) 15.
It is swollen that the hacking for pushing away cone 17 and both ends distending there are two internal screw thread activity is set referring to Figure 12, in the intumescent anchor bolt Tube expansion 16, the outer end of the screw rod 12 are screw head 11, and anchoring into end is thread segment 20.Obstacle is the interior spiral shell covered on screw rod 12 Line activity pushes away cone 17.It can effectively guarantee the depth of intumescent anchor bolt anchored into a little, more preferably guarantee degree of safety, the expansion in this way Type anchor bolt does not have casing by outer segment.The intumescent anchor bolt of the prior art be both provided with casing or be provided with length almost with anchor into The consistent expansion piece of depth (15,16).
Referring to Figure 13, the intumescent anchor bolt is variable cross-section screw rod 12 by pushing away major diameter section excessively to the lesser spiral shell of diameter The conical ring 13 that line section 20 is constituted；The outer end of the screw rod 12 is screw head 11, and anchoring into end is thread segment 20, anchors into end end with interior spiral shell Line activity pushes away cone 17, pushes away between cone 17 in conical ring 13 and internal screw thread activity equipped with both ends hacking expansion tube 16.
Intumescent bolt case two (Figure 14-Figure 15)
Referring to Figure 14, the obstacle (projection 19 of form c) is arranged in the intumescent anchor bolt；The outer end of the screw rod 12 is The end of thread 20 is simultaneously equipped with the rectangular protrusion for turning screw rod 12 equipped with nut 14 and most (left side) outer end of screw rod 12, and effect makes Expansion piece (15,16) are prevented to relatively move.Anchoring into end also is thread segment 20, anchors into end end equipped with internal screw thread activity and pushes away cone 17, (projection 19 of form c) and internal screw thread activity push away between cone 17 equipped with a hacking expansion tube 16 obstacle.
Referring to Figure 15, the intumescent anchor bolt is 12 variable cross-section screw rod 12 of variable cross-section screw rod by larger-diameter section excessively to straight The lesser thread segment 20 of diameter constitutes (obstacle) conical ring 13, its effect makes expansion piece (15,16) distending；The outer end of the screw rod 12 For the end of thread 20 and most (left side) outer end equipped with nut 14 and screw rod 12 is equipped with the rectangular protrusion for turning screw rod 12, anchors into End is also thread segment 20, anchors into end end equipped with internal screw thread activity and pushes away cone 17, pushes away in conical ring 13 and internal screw thread activity and match between cone 17 There is both ends hacking expansion tube 16.
Intumescent is bolted the Project case one of the construction method of precast shear wall unit
Assembly shear wall vertically stitches the construction method of the connecting elements 5 of 2 connection structures, and assembly shear wall vertically stitches 2 connections The construction method of the connecting elements 5 of structure refers to that 12 one end of screw rod anchors into end equipped with external thread section 20, and the other end is screw head The construction method of 11 intumescent anchor bolt, specifically includes following operation element:
(1-1) hole-opening and cleaning hole in precast shear wall body unit 1,
(1-2) carries out injection cementitious material 6 to hole, and the injection rate of injected cementitious material 6 need to meet intumescent anchor bolt It is more than or equal to pore volume with the sum of the volume of cementitious material 6；
(1-3) is inserted into the intumescent anchor bolt regulated, i.e., the described intumescent anchor bolt must make open before insertion anchors hole Piece expansion tube 16 pushes away cone 17 with conical ring 13 and internal screw thread activity and comes into full contact with, so that internal screw thread activity pushes away cone 17, hacking expansion tube 16 and 13 three of conical ring be in contact condition；
(1-4) tightens intumescent anchor bolt, i.e. rotation screw head 11, and intumescent anchor bolt is made to reach tension stress and securely want It asks；Wherein, the control method tightened is: torque value when intumescent anchor bolt is tightened reaches code requirement and internal screw thread activity pushes away cone 17 distances being screwed into reach required value；
Wherein, in operation element (1-1), when being provided with hole in precast shear wall body unit 1, then this operative employee is omitted Make；In operation element (1-2), if you do not need to perfusion cementitious material 6, then omit this operation element；Operation element (1-2)- (1-4) must be operated continuously, and complete all processes before 6 initial set of cementitious material.
The construction is simple of the case one disposably completes grouting (perfusion cementitious material 6) stretch-draw anchor.
Above-mentioned is construction method of the present invention, and only primary operational works, and all may not include, in behaviour of the invention Make work, carry out increasing operation element or exchange operation element.
Intumescent is bolted the Project case two of the construction method of precast shear wall unit
It is outer that the construction method for the connecting elements 5 that assembly shear wall vertically stitches 2 connection structures refers to that the both ends of screw rod 12 are equipped with The construction method of the intumescent anchor bolt of thread segment 20, specifically includes following operation element:
(2-1) hole-opening and cleaning hole in precast shear wall body unit 1；
Grout pipe is inserted into hole bottom by (2-2), is injected and is gelled to 1 hole hole of the second precast shear wall body by grout pipe Material 6, injection rate need to meet the sum of volume of intumescent anchor bolt and cementitious material material 6 equal to the second precast shear wall body opening hole body Long-pending 80%-105%；
(2-3) is inserted into the intumescent anchor bolt regulated, i.e., the described intumescent anchor bolt must make open before insertion anchors hole 16 both ends of piece expansion piece and throw-out collar 13 or internal screw thread activity push away cone 17 and come into full contact with, though internal screw thread activity push away cone 17, hacking Expansion piece 16 and 13 three of obstacle are in contact condition；
(2-4) tightens the screw rod 12 and internal screw thread traveling nut 14 of intumescent anchor bolt, so that screw rod 12 and internal screw thread activity Nut 14 rotates together, and intumescent anchor bolt is made to reach preliminary tension stress requirement；The control method tightened is: turning 12 He of screw rod The torque value of internal screw thread traveling nut 14 reaches corresponding requirements；
(2-5) is after the anchoring adhesive curing of the hole of the second precast shear wall body unit 1 reaches intensity, then internal threads are living Dynamic nut 14 tightens second of progress and applies prestressing force, and the torque value for turning internal screw thread traveling nut 14 reaches requirement.
Wherein, in operation element (2-1), when being provided with hole in precast shear wall body unit, then this operative employee is omitted Make；It needs to operate continuously in operation element (2-2)-(2-4), and starts to anchor preceding completion in cementitious material.Separately in operation element (2- 5) cementitious material 6 is perfused to the hole of vertical seam 2 or/and the first precast shear wall body 1 as needed in front or rear.
The intumescent anchor bolt of Project case two can provide high pre-stress, increase rubbing between precast shear wall body unit 1 Power is wiped, more preferably prevents from cracking at assembly.
The hole that connected component 5 in the construction method for the connecting elements that assembly shear wall vertically stitches 2 connection structures passes through Hole is preformed hole in the first precast shear wall body unit 1, and is bored after the hole in the second precast shear wall body unit 1 is Hole.Its role is to reduce the accurate difficulty required and construction aligns of hole location production, production efficiency is improved.
Cementitious material 6 can use inorganic anchor adhesive (slurry) or organic anchor adhesive (slurry), tool according to requirement of engineering and condition Body includes cement slurry, cement mortar, sulphide mastic, epoxy resin glue, modified vinyl lipid glue etc..
Above-mentioned is construction method of the present invention, and only primary operational works, and all may not include, in behaviour of the invention It carries out increasing operation element as working foundation or exchanges operation element sequence, belong to protection scope.
Above-mentioned is the preferable embodiment of the present invention, but embodiments of the present invention are not limited by the foregoing content, His any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention, should be The substitute mode of effect；It is included within the scope of the present invention.

Claims (10)

1. a kind of assembly shear wall vertically stitches connection structure, which is characterized in that it is logical that the assembly shear wall, which vertically stitches connection structure, Connecting elements is crossed to link together the first precast shear wall body unit and the second precast shear wall body unit；The connecting elements Hole on the first precast shear wall body unit enters the second precast shear wall body unit, and one end anchors into second and prefabricated cuts In power wall element, the other end is anchored in the first precast shear wall body unit；The connecting elements is in vertically seam connection structure There are stretch-draw prestressing force, the connection faying face of the first precast shear wall body unit and the second precast shear wall body unit is even Mutual extrusion under the pulling force effect of connection member, and the fixed company under frictional force and the collective effect of the stretch-draw prestressing force of connecting elements It connects；The vertical seam is that the side of the first precast shear wall body unit connects faying face and the side of the second precast shear wall body unit connects Connect the joint of faying face.
2. assembly shear wall according to claim 1 vertically stitches connection structure, which is characterized in that the connecting elements is The distance between stress point of one precast shear wall body unit anchoring and the vertical seam and connecting elements prefabricated are cut second The distance between the farthest point of power wall element anchoring stress effect and the vertical seam are all larger than the connecting elements equal to 5 times Cross sectional dimensions；The connecting elements passes through the hole of the first precast shear wall body unit, the first precast shear wall body unit Hole vertical dimension be more than or equal to the connecting elements cross sectional dimensions plus the connecting elements load stress point to vertically The sum of 1/50th of the distance of seam.
3. assembly shear wall according to claim 1 vertically stitches connection structure, which is characterized in that in linear type shear wall In connection structure, the connecting elements is penetrated from the surface of the first precast shear wall body unit, and the connecting elements and first is in advance The connection faying face oblique of shear wall unit processed and the second precast shear wall body unit；And in the first precast shear wall body unit And the second at T-shaped or L-shaped connection structure of shape between precast shear wall body unit；The connecting elements is from the first precast shear wall The surface of body unit penetrates, the connection of the connecting elements and the first precast shear wall body unit and the second precast shear wall body unit Faying face intersects vertically.
4. assembly shear wall according to claim 1 vertically stitches connection structure, which is characterized in that the first prefabricated shearing The hole that connected component in wall element and the second precast shear wall body unit is passed through carries out perfusion cementitious material processing； Intensity is lower than the intensity equal to the first precast shear wall body unit and the second precast shear wall body unit after the solidification of injecting glue gel material, But it is more than or equal to C20 concrete strength.
5. a kind of vertically stitch the shear wall of the connection structure vertically company of seam using the described in any item assembly shear walls of claim 1-4 Junctor system, which is characterized in that vertically stitch connection structure including precast shear wall body unit, the assembly shear wall and be located at described The horizontal connection structure of vertical seam upper and lower ends, it is by connecting elements first that the assembly shear wall, which vertically stitches connection structure, Precast shear wall body unit and the second precast shear wall body unit link together；The connecting elements passes through the first prefabricated shearing The hole of wall element enters the first precast shear wall body unit, and one end anchors into the second precast shear wall body unit, another End is anchored in the first precast shear wall body unit；The connecting elements vertically stitches in connection structure that there are tensioning in assembly shear wall Drawing of the connection faying face of prestressing force, the first precast wall body unit and the second precast shear wall body unit in the connecting elements Power acts on lower mutual extrusion, and is fixedly connected under frictional force and the collective effect of the stretch-draw prestressing force of connecting elements；It is described perpendicular Faying face, which is connected, to the side that seam is the first precast shear wall body unit connect faying face with the side of the second precast shear wall body unit Joint；
It is one or more that the shear wall, which vertically stitches the connecting elements in linked system, and type of attachment is one kind or one Kind or more；
The horizontal connection structure of the upper and lower ends vertically stitched penetrates through the vertical seam, i.e., the vertical seam is discontinuous structure； The horizontal connection structure of the upper and lower ends vertically stitched is the first precast shear wall body unit and the second precast shear wall body list Member links together, and horizontal reinforcement and diagonally opposing corner in the horizontal reinforcement or horizontal connection structure in the horizontal connection structure Arrangement of reinforcement is straight-through to cross over the vertical seam.
6. shear wall according to claim 5 vertically stitches linked system, which is characterized in that the first precast shear wall body The vertical edges of unit and the second precast shear wall body unit are both provided with edge member.
7. the calculating side that a kind of shear wall for described in claim 5 vertically stitches the shear-carrying capacity design value of linked system Method, which is characterized in that the shear-carrying capacity design value that the shear wall vertically stitches linked system is the assembly shear wall vertically company of seam The sum of the shearing resistance design value of horizontal connection structure of shearing resistance design value provided by binding structure and vertical seam upper and lower ends；Institute State assembly shear wall vertically stitch shearing resistance design value provided by connection structure equal to the first precast shear wall body unit and Frictional force design value between the connection faying face of second precast shear wall body unit or the shearing resistance design equal to connecting elements Frictional force design value between value and the connection faying face of the first precast shear wall body unit and the second precast shear wall body unit The sum of.
8. shear wall according to claim 7 vertically stitches the calculation method of the shear-carrying capacity design value of linked system, It is characterized in that, the assembly shear wall vertically stitches shearing resistance design value provided by connection structure equal to the described first prefabricated shearing Frictional force design value between wall element and the connection faying face of the second precast shear wall body unit, formula are as follows: Vg=μ Np, this Formula is suitable for the case where not being in the milk in hole, and μ is the coefficient of friction between the connection faying face of precast shear wall body unit；Institute State assembly shear wall vertically stitch shearing resistance design value provided by connection structure equal to the connecting elements shearing resistance design value with The sum of frictional force design value between first precast shear wall body unit and the connection faying face of the second precast shear wall body unit, Formula are as follows: Vg=[μ β+(1- β)0.5]fyAS, this formula be suitable for hole be in the milk the case where, β NpWith fyASRatio, i.e. β= Np/fyAS；The calculation formula of shearing resistance design value provided by the connecting elements in the case of Aseismic Design are as follows: VgE=μ Np+ 0.6fyAS=[μ β+0.6] fyAS；In formula: VgAnd VgERespectively the shearing resistance design value of connecting elements and antidetonation situation shearing resistance Design value, fyFor the shearing strength design value of connecting elements, ASThe sectional area of vertical connection faying face, N are passed through for connecting elementsp For connecting elements it is vertical vertically stitch effective pre- answer stretching force design value；The shearing resistance of the horizontal connection structure of the upper and lower ends The shearing resistance design value calculating method that power design value presses beam calculates.
9. a kind of connecting elements for vertically stitching connection structure for the described in any item assembly shear walls of claim 1-4, special Sign is that the connecting elements is a kind of intumescent anchor bolt, and the intumescent anchor bolt includes screw rod, expansion piece and internal screw thread activity Nut or/and internal screw thread activity push away cone；Described screw rod one end is to anchor into end equipped with external thread section, and the other end is screw head, or The person screw rod both ends are designed with thread segment；It is described anchor into end and be provided with internal screw thread activity push away cone or internal screw thread traveling nut；It is described Screw rod is equipped with obstacle, and the obstacle is the object for stopping expansion piece to relatively move, or keeps expansion piece swollen That opens pushes away cone.
10. a kind of construction method for the connecting elements that connection structure is vertically stitched for assembly shear wall as claimed in claim 9, Be characterized in that, assembly shear wall vertically stitch the construction of the connecting elements of connection structure according to the difference of the intumescent anchor bolt of connection and Take following corresponding method:
(1) what screw rod one end was equipped with external thread section anchors into end, the other end for the intumescent anchor bolt construction method of screw head include with Lower operation element:
(1-1) hole-opening and cleaning hole in precast shear wall body unit；
(1-2) carries out injection cementitious material to hole, and the injection rate of injected cementitious material need to meet intumescent anchor bolt and gelling The sum of material volume is more than or equal to pore volume；
(1-3) is inserted into the intumescent anchor bolt regulated, i.e., the described intumescent bolt must make expansion piece before insertion anchors hole It pushes away cone with internal screw thread traveling nut and internal screw thread activity to come into full contact with, so that internal screw thread traveling nut, expansion piece and internal screw thread are living It is dynamic to push away cone three and be in contact condition；
(1-4) tightens intumescent anchor bolt, and intumescent anchor bolt is made to reach tension stress and securely require；Wherein, the controlling party tightened Method is: torque value when intumescent anchor bolt is tightened reaches the distance that code requirement and internal screw thread traveling nut are screwed into and reaches requirement Value；
Wherein, in operation element (1-1), when being provided with hole in precast shear wall body unit, then this operation element is omitted；? In operation element (1-2), if you do not need to perfusion cementitious material, then omit this operation element；
(2) it includes following primary operational work that the both ends of screw rod, which are equipped with the intumescent anchor bolt construction method of external thread section:
(2-1) hole-opening and cleaning hole in precast shear wall body unit；
Grout pipe is inserted into hole bottom by (2-2), injects cementitious material by hole of the grout pipe to the second precast shear wall body, Injection rate need to meet the 80%- of the sum of intumescent anchor bolt and cementitious material volume equal to the pore volume of the second precast shear wall body 105%；
(2-3) is inserted into the intumescent anchor bolt regulated, i.e., the described intumescent bolt must make expansion piece before insertion anchors hole Both ends push away cone with internal screw thread traveling nut or/and internal screw thread activity and come into full contact with, so that internal screw thread traveling nut, expansion piece and resistance Block material three is in contact condition；
(2-4) tightens the screw rod and internal screw thread traveling nut of intumescent anchor bolt, rotates together screw rod and internal screw thread traveling nut, Intumescent anchor bolt is set to reach preliminary tension stress requirement；The control method tightened is: turning screw rod and internal screw thread traveling nut Torque value reaches corresponding requirements；
(2-5) after the anchoring cementitious material adhesive curing in the hole of the second precast shear wall body reaches predetermined strength, then externally The internal screw thread traveling nut at end tightens second of progress and applies prestressing force, and the torque value for turning internal screw thread traveling nut, which reaches, to be wanted It asks；
Wherein, in operation element (2-1), when being provided with hole in precast shear wall body unit, then this operation element is omitted；? Operation element (2-2)-(2-4) needs to operate continuously, and starts to anchor preceding completion in cementitious material.
CN201811573886.3A 2018-12-21 2018-12-21 Assembly shear wall vertically stitches connection structure and its accessory, application, calculating and construction Pending CN109440969A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104032850A (en) * 2014-06-17 2014-09-10 东南大学 Prefabricated shear wall dry type vertical connecting node and construction method
CN106948510A (en) * 2017-03-20 2017-07-14 北京建筑大学 A kind of fabricated shear wall
CN108824671A (en) * 2018-05-31 2018-11-16 中国建筑股份有限公司 The fabricated shear wall and its construction method of curved scissors stress separation
CN209568570U (en) * 2018-12-21 2019-11-01 刘祥锦 A kind of assembly shear wall vertically stitches connection structure, connecting elements and linked system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104032850A (en) * 2014-06-17 2014-09-10 东南大学 Prefabricated shear wall dry type vertical connecting node and construction method
CN106948510A (en) * 2017-03-20 2017-07-14 北京建筑大学 A kind of fabricated shear wall
CN108824671A (en) * 2018-05-31 2018-11-16 中国建筑股份有限公司 The fabricated shear wall and its construction method of curved scissors stress separation
CN209568570U (en) * 2018-12-21 2019-11-01 刘祥锦 A kind of assembly shear wall vertically stitches connection structure, connecting elements and linked system

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