CN106639151B - Built-in X-type is to drawing steel plate type welding rectangular steel-tube concrete column and construction method - Google Patents

Built-in X-type is to drawing steel plate type welding rectangular steel-tube concrete column and construction method Download PDF

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Publication number
CN106639151B
CN106639151B CN201611249027.XA CN201611249027A CN106639151B CN 106639151 B CN106639151 B CN 106639151B CN 201611249027 A CN201611249027 A CN 201611249027A CN 106639151 B CN106639151 B CN 106639151B
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China
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type
steel plate
steel
welding
rectangular steel
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CN106639151A (en
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王来
陈海涛
史奉伟
陈惠荣
玄伟
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Shandong University of Science and Technology
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Shandong University of Science and Technology
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/30Columns; Pillars; Struts
    • E04C3/32Columns; Pillars; Struts of metal
    • 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

Abstract

The invention discloses a kind of built-in X-type to drawing steel plate type welding rectangular steel-tube concrete column and construction method, including welding rectangular steel pipe, X-type to drawing steel plate, rectangular steel pipe diagonal positions are welded provided with the X-type together with its corner welding to drawing steel plate, the X-type is respectively arranged at the both ends of welding rectangular steel pipe to drawing steel plate to include two pieces;Every piece of X-type is welded to drawing steel plate to be formed by one piece of main steel plate and two pieces of helper spring X-type cross, and by X-type to drawing steel plate longitudinal seam;Concrete has been poured to the inside configuration for drawing steel plate assembling in welding rectangular steel pipe, X-type.By X-type to drawing effective segmentation of the steel plate to core concrete, add restriction ability of the welding rectangular steel pipe to core concrete, be advantageous to improve the interfacial adhesion slip property of welding rectangular steel-tube concrete column, the adhesion strength and integrated carrying ability for making welding rectangular steel-tube concrete column significantly improve, and save steel and concrete material.

Description

Built-in X-type is to drawing steel plate type welding rectangular steel-tube concrete column and construction method
Technical field
The present invention relates to the building element in building structure and its construction method, in particular to a kind of built-in X-type to drawing steel Board-like welding rectangular steel-tube concrete column and its construction method.
Background technology
Concrete filled steel tube refers to the fill concrete in steel pipe, and steel pipe and its core concrete bear external load effect jointly Structural elements.Compared with reinforced column, in steel core concrete column, steel pipe makes to mix to the effect of contraction of its inner concrete Solidifying soil is in three dimension stress state, improves the compression strength of concrete, the concrete of steel duct can be prevented effectively again Local buckling occurs for steel pipe, and the interaction between steel pipe and concrete makes the destruction of steel duct concrete be turned by brittle break It is changed into plastic failure, the ductile performance of component is obviously improved, and energy dissipation capacity greatly improves, and has good anti-seismic performance.Meanwhile Template is not needed during Construction of Steel Pipe Concrete Column, formwork, the material of form removal and labour cost is saved, also saves the time.Cause This, steel core concrete column obtains in high-rise and super-high building structure, large-scale heavy duty industrial premises and long-span bridges It is widely applied.
For circular steel tube concrete post, rectangular steel-tube concrete column good appearance is welded, makes simple, beam column Node is easy to connect, it is easier to meets requirement of the building using function.But welding rectangular steel-tube concrete column acts in pressure Under, to the binding effect of core concrete be not as notable as concrete-filled circular steel tube column, weld the steel pipe one of rectangular steel-tube concrete column As be welded to form by four blocks of steel plates, result in welding rectangular steel pipe it is poor to the overall effect of restraint of core concrete, bearing capacity compared with It is low, ductility is poor, hinder application of the welding rectangular steel-tube concrete column on high-rise, high-rise building to a certain extent.
Because the deformability of two kinds of materials of steel pipe and concrete, mechanical property and damage -form are different, in steel tube concrete In earth pillar practical engineering application, load is general first to be undertaken by the steel pipe walls of welding rectangular steel-tube concrete column, then by steel pipe with External load is progressively passed to core concrete by the interfacial adhesion between core concrete, by the bond-slip of certain length Afterwards, the cooperation of steel pipe and concrete is realized.The interfacial adhesion size welded between rectangular steel pipe and core concrete is straight Connecing influences the service behaviour of welding rectangular steel-tube concrete column, therefore, how to strengthen and is welded in welding rectangular steel-tube concrete column Interface binding intensity problem between rectangular steel pipe and concrete is engineering circles more concern.
When the cross section for welding rectangular steel-tube concrete column is larger, the core concrete volume in steel pipe is larger, substantially After product concreting, it, which condenses, can produce shrinkage phenomenon in hardening process and discharge the substantial amounts of heat of hydration so that welding rectangle The effect of restraint of core concrete is reduced steel pipe and core concrete internal temperature is higher, and surface temperature is relatively low, core coagulation Soil is also easy to produce the defects of bulging, crack and temperature deformation, to weld the bearing capacity of rectangular steel-tube concrete column, interfacial adhesion and The performances such as durability have a negative impact.
" strong column and weak beam, strong shear capacity and weak bending capacity, the strong weak component of node " is the weight employed in seismic design of structures and current specifications The design philosophy wanted, refer to that pillar does not destroy prior to beam, be locality, pillar is broken because beam, which destroys, belongs to component damage The bad safety that will jeopardize total, may total Collapse, consequence is serious.So to ensure pillar more in seismic design of structures " relative " safety, therefore want " strong column and weak beam ";" bending failure " is ductile fracture, be it is premonitory, such as cracking or downwarp, and " failure by shear " is a kind of brittle destruction, do not have it is premonitory, it is instantaneous to occur, do not take precautions against, so will in seismic design of structures Avoid that failure by shear occurs." the strong weak component of node ", which refers to, goes out the plastic hinge of building structure central sill Column border node in seismic design of structures Present beam-ends, plastic hinge must be avoided to appear in pillar end, to improve the deformability of structure, structure can preferably consume energy, Strengthen ductility, prevent building from collapsing under violent earthquake effect, because the Liang Yuzhu that node failure means to be attached thereto loses Effect, so, the bearing capacity of node is higher than connecting elements.The design philosophy of " strong column and weak beam, strong shear capacity and weak bending capacity, the strong weak component of node " It can be effectively ensured and reach structural seismic and set up defences target, while seismic design of structures is accomplished economical rationality again.In actual work Cheng Zhong, due to the effect of the differential settlement and vertical load of ground, in geological process, the end of pillar, which is substantially all, to go out The generation of X-shaped crack is now significantly had at damage or destruction and bean column node.How to ensure " strong column and weak beam, strong shear capacity and weak bending capacity, by force The design philosophy of the weak component of node " is preferably realized in Anti-quake Architectural Structure Design, and engineering field practitioner is always The importance of research and probe.
Therefore need in engineering practice to provide a kind of construction is convenient, interface binding intensity is high, more meet " strong column and weak beam, by force Cut weak curved, the strong weak component of node " design philosophy, and core concrete contraction can be effectively reduced, make temperature inside core concrete Degree is reduced, the welding rectangular steel-tube concrete column of economical rationality, and the entirety for substantially increasing welding rectangular steel-tube concrete column is held Carry power, ductility and service behaviour.
The content of the invention
The purpose of the present invention is in view of the shortcomings of the prior art, there is provided a kind of built-in X-type is to drawing steel plate type welding rectangle steel Pipe concrete column and its construction method, it includes welding rectangular steel pipe, X-type to drawing steel plate and core concrete, the welding square Shape steel pipe is welded by four blocks of steel plates, and X-type is located at welding rectangular steel pipe pair to drawing steel plate to offer circular opening along longitudinal direction Diagonal position, and four longitudinal angle weld seams by welding rectangular steel pipe weld together with welding rectangular steel pipe, the core Concreting is in welding rectangular steel pipe and X-type to drawing in the space that steel plate is surrounded.By X-type to drawing steel plate to core coagulation Effective segmentation of soil, restriction ability of the welding rectangular steel pipe to core concrete is added, be advantageous to improve welding rectangular steel pipe The interfacial adhesion slip property of concrete column, make the adhesion strength of welding rectangular steel-tube concrete column and integrated carrying ability notable Improve, save steel and concrete material, meanwhile, X-type can effectively reduce core coagulation to drawing steel plate to have heat-conductive bridges function Temperature inside soil, effectively reduces the contraction of core concrete.Present invention simultaneously discloses its construction method.
Technical scheme is as follows:
A kind of built-in X-type is to drawing steel plate type welding rectangular steel-tube concrete column, including welding rectangular steel pipe, X-type to drawing steel Plate and concrete, it is described to weld rectangular steel pipe diagonal positions provided with the X-type together with its corner welding to drawing steel plate, it is described X-type is respectively arranged at the both ends of welding rectangular steel pipe, highly 1/4 for welding rectangular steel pipe clear height to drawing steel plate to include two pieces; Every piece of X-type is formed to drawing steel plate by one piece of main steel plate and two pieces of helper spring X-type cross, and by X-type to drawing steel plate longitudinal seam It is welded;In welding rectangular steel pipe and X-type core concrete is poured to drawing in the space that steel plate is surrounded.
Preferably, the welding rectangular steel pipe is welded by four blocks of steel plates, and cross section is rectangle.
Preferably, the main steel plate and helper spring uniformly open up the steel plate of circular opening, its thickness and circular port for longitudinal direction Size, the spacing in hole are determined by design requirements such as the seismic behaviors, bearing capacity, interface binding intensity of welding rectangular steel-tube concrete column It is fixed.
Preferably, the X-type is to drawing the steel structure member that steel plate is cross section X-shaped, its size and welding rectangular steel pipe Concrete column Diagonal Dimension matches.
Preferably, the X-type is to drawing steel plate by welding four longitudinal angle weld seams of rectangular steel pipe with welding rectangular steel pipe Weld together, welding rectangular steel pipe is formed built-in X-type overall to drawing steel plate type steel construction.
Preferably, the X-type is completed to drawing steel plate to shift to an earlier date with the steel plate needed for welding rectangular steel pipe in factory process, and Groove is carried out according to the design size of welding rectangular steel-tube concrete column in advance.
Specific construction method is as follows:
(1) according to welding rectangular steel-tube concrete column design size, it will process along longitudinal direction and be uniformly provided with circular opening Main steel plate and helper spring by X-type to draw steel plate longitudinal seam be welded into X-shaped to draw steel plate;
(2) by the X-type being welded to drawing steel plate to be placed in the diagonal positions at welding rectangular steel pipe both ends, and along welding rectangle Steel pipe longitudinal direction height is about in the range of 1/4 post clear height, finally, the steel plate welded needed for rectangular steel pipe is welded into welding square successively The X-shaped at shape steel pipe both ends is to the four sides of drawing steel plate, and X-type built in formation is to drawing steel plate type welding rectangular steel pipe;
(3) at the construction field (site), by prefabricated built-in X-type to drawing steel plate type welding rectangular steel pipe to be lifted into corresponding installation position Postpone, core concrete is poured to drawing in steel plate type welding rectangular steel pipe to built-in X-type, after core concrete hardening built in formation X-type is to drawing steel plate type welding rectangular steel-tube concrete column.
The positive effect of the present invention is:
(1), to drawing the effective drawknot of steel plate, realized by welding both ends X-type in rectangular steel-tube concrete column to welding square Effective segmentation of shape steel core concrete column, the effect of restraint to welding rectangular steel pipe inner core concrete is enhanced, is effectively improved The integrated carrying ability of welding rectangular steel-tube concrete column.
(2), to drawing the effective drawknot of steel plate, welding rectangle is strengthened by welding both ends X-type in rectangular steel-tube concrete column The weak part of four longitudinal angle weld seams of steel pipe, prevent from welding the longitudinal fillet weld at rectangular steel-tube concrete column both ends during axial compression Drum is bent too early or ftractures for seam.
(3) vertical load can not only be undertaken to drawing steel plate by welding X-type in rectangular steel pipe, improve element bearing capacity, and Welding rectangular steel pipe pipe thickness can be reduced, reduce the cross section of welding rectangular steel-tube concrete column, save material, make Effective usable floor area of building is increased, and meets the needs of building.
(4) by drawing the circular opening that opens up on steel plate, being advantageous to improve the pouring quality of core concrete in X-type, So that entirety is connected as to the core concrete for drawing steel plate partition by X-type, meanwhile, core concrete can be made to X-type to drawing again Steel plate forms preferably parcel effect.X-type is to drawing steel plate can be by shearing the core concrete in circular opening, to resist welding The interface sliding of rectangular steel-tube concrete column, the interface binding intensity of welding rectangular steel pipe and core concrete is added, improved The anti-slipping property energy and its integral working of welding rectangular steel-tube concrete column.
(5) by, to drawing steel plate, strengthening pillar both ends in welding rectangular steel-tube concrete column both ends interior welds X-type Shear-carrying capacity, X-type make welding rectangular steel pipe be internally formed mutually stable drawknot effect to drawing the circular opening that steel plate opens up Should, be advantageous to improve the strength and stiffness of welding rectangular steel-tube concrete column, avoid the generation in bean column node X-shaped crack, The design philosophy of " strong column and weak beam, strong shear capacity and weak bending capacity, the strong weak component of node " is preferably realized, ensure that the reality of aseismic fortification objects It is existing.
(6) X-type set in rectangular steel-tube concrete column both ends is welded to drawing steel plate that there is heat-conductive bridges function, by built-in Conduction of the X-type to drawing steel plate, the heat of hydration inside core concrete can be passed to welding rectangle steel tube wall, core is accelerated and mix Coagulate native internal heat to distribute, while effectively prevent and make welding rectangular steel pipe because of the contraction of core concrete to core coagulation The phenomenon that the effect of restraint of soil reduces, is eliminated because of core concrete bulging, crack caused by core concrete hydration heat effect And the adverse effect such as temperature deformation.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are the present invention Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis These accompanying drawings obtain other accompanying drawings.
Fig. 1 is the schematic perspective view of the present invention;
Fig. 2 is the X-type of the present invention to drawing steel plate structure schematic diagram;
Fig. 3 is the top view of the present invention;
Fig. 4 is the internal structure schematic diagram of the present invention
Fig. 5, Fig. 6 are the X-types of the present invention to drawing steel plate main steel plate, X-type to drawing steel plate helper spring structural representation
In figure:1- welds rectangular steel pipe, and 2-X types are to drawing steel plate, and 3- main steel plates, 4- helper springs, 5-X types are to drawing steel plate longitudinal direction Weld seam, 6- welding rectangular steel pipe longitudinal angle weld seams, 7- core concretes, 8- circular openings.
Embodiment
The present invention is described in detail referring to the drawings:
As shown in Fig. 1~Fig. 6, for a kind of built-in X-type to drawing steel plate type welding rectangular steel-tube concrete column, it includes welding square Shape steel pipe 1, X-type are to drawing steel plate 2 and core concrete 7;Welding rectangular steel pipe 1 and X-type are poured drawing in the space that steel plate is surrounded Build core concrete 7.
Welding rectangular steel pipe 1 is that the cross section that four blocks of steel plates are welded is the steel pipe of rectangle.
X-type is to drawing the steel construction structure that the cross section that steel plate 2 is welded by one piece of main steel plate 3 and two blocks of helper springs 4 is X-shaped Part;The device includes two pieces of X-types to drawing steel plate 2, highly 1/4 for longitudinal measure rectangular steel-tube concrete column clear height, respectively It is arranged at the both ends of pillar;The shear-carrying capacity at pillar both ends is strengthened, X-type makes welding to drawing the circular opening that steel plate opens up Rectangular steel pipe is internally formed mutually stable drawknot effect, is advantageous to improve the intensity and just of welding rectangular steel-tube concrete column Degree, avoids the generation in bean column node X-shaped crack, preferably realizes " strong column and weak beam, strong shear capacity and weak bending capacity, the strong weak component of node " Design philosophy, ensure that the realization of aseismic fortification objects.
The X-type is to drawing steel plate positioned at the diagonal positions of welding rectangular steel pipe 1, and X-type is to drawing steel plate to pass through four welderings Connect rectangular steel pipe longitudinal angle weld seam 6 with welding rectangular steel pipe 1 to weld together, welding rectangular steel pipe 1 is formed built-in X-type to drawing The steel structure member of steel plate;, to drawing the effective drawknot of steel plate, weldering is strengthened by welding both ends X-type in rectangular steel-tube concrete column The weak part of four longitudinal angle weld seams of rectangular steel pipe is connect, prevents from welding the vertical of rectangular steel-tube concrete column both ends during axial compression To angle welding, drum is bent too early or ftractures.
X-type longitudinally offers circular opening 8 to drawing steel plate helper spring 4 to drawing steel plate main steel plate 3 and X-type along steel plate, and Circular opening 8 is evenly arranged along longitudinal direction;By, to drawing the circular opening 8 opened up on steel plate 2, being advantageous to raising core in X-type and mixing Coagulate the pouring quality of soil so that entirety is connected as to the core concrete for drawing steel plate 2 to split by X-type, meanwhile, core can be made again Concrete is to X-type to drawing steel plate 2 to form preferably parcel effect.X-type is to drawing steel plate 2 can be by shearing the core in circular opening 8 Heart concrete, to resist the interface sliding of welding rectangular steel-tube concrete column, add welding rectangular steel pipe 1 and core concrete Interface binding intensity, improve welding rectangular steel-tube concrete column anti-slipping property energy and its integral working.
Rectangular steel pipe 1, X-type are welded to drawing steel plate main steel plate 3 and X-type to drawing steel plate needed for steel plate helper spring 4 can advance root Formed according to the design size of welding rectangular steel-tube concrete column in factory process, then by X-type to drawing the longitudinal seam 5 of steel plate 2 By one piece of X-type to drawing steel plate main steel plate 3 and two pieces of X-types to form X-type to drawing steel plate 2 to drawing steel plate helper spring 4 to weld together.
Four blocks of steel plates for welding rectangular steel pipe 1 are welded to steel pipe by four welding rectangular steel pipe longitudinal angle weld seams 6 respectively The X-type at concrete column both ends to draw steel plate 2 four sides, to welding rectangular steel pipe 1 in pour core concrete 7 after, X built in formation Type is to drawing steel plate type welding rectangular steel-tube concrete column;The X-type set in rectangular steel-tube concrete column both ends is welded to drawing steel plate 2 With heat-conductive bridges function, by conduction of the built-in X-type to drawing steel plate 2, the heat of hydration inside core concrete can be passed to weldering The wall of rectangular steel pipe 1 is connect, accelerates distributing for core concrete internal heat, while effectively prevent the contraction because of core concrete And the phenomenon for making welding rectangular steel pipe 1 reduce the effect of restraint of core concrete, eliminate because of core concrete aquation thermal effect The adverse effect such as core concrete bulging, crack and temperature deformation caused by answering.
Above-mentioned built-in X-type comprises the following steps to drawing steel plate type to weld the construction method of rectangular steel-tube concrete column:
(1) according to the welding concrete column design size of rectangular steel pipe 1, it will process along longitudinal direction and be uniformly provided with circular opening 8 X-type is to drawing steel plate main steel plate 3 and X-type to drawing steel plate helper spring 4 by X-type to drawing steel plate longitudinal seam 5 to be welded into X-shaped pair Steel plate 2 is drawn, then, by the X-type being welded to drawing steel plate 2 to be placed in the diagonal positions at welding rectangular steel pipe 1 both ends, and along welding The longitudinal direction of rectangular steel pipe 1 height is about in the range of 1/4 post clear height, and finally, the steel plate welded needed for rectangular steel pipe 1 is welded to successively The four sides of the X-shaped to drawing steel plate 2 at the both ends of rectangular steel pipe 1 is welded, X-type built in formation is to drawing steel plate type welding rectangular steel pipe 1.
(2) at the construction field (site), by prefabricated built-in X-type to drawing steel plate type welding rectangular steel pipe to be lifted into corresponding installation position Postpone, core concrete 7 is poured to drawing in steel plate type welding rectangular steel pipe to built-in X-type, after core concrete 7 hardens in formation X-type is put to drawing steel plate type welding rectangular steel-tube concrete column.
It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, Some improvement can also be made, these improvement also should be regarded as protection scope of the present invention.Each composition being not known in the present embodiment The available prior art in part is realized.

Claims (6)

1. a kind of built-in X-type is to drawing steel plate type welding rectangular steel-tube concrete column, it is characterised in that including welding rectangular steel pipe, X Type is to drawing steel plate and concrete, and the welding rectangular steel pipe diagonal positions are provided with the X-type together with its corner welding to drawing Steel plate, the X-type are respectively arranged at the both ends of welding rectangular steel pipe to drawing steel plate to include two pieces;Every piece of X-type is to drawing steel plate by one Block main steel plate and two pieces of helper spring X-type cross are formed, and by X-type to drawing steel plate longitudinal seam to be welded;In welding rectangle Steel pipe and X-type pour core concrete to drawing in the space that steel plate is surrounded;The main steel plate and helper spring are uniformly opened for longitudinal direction If the steel plate of circular opening.
2. built-in X-type as claimed in claim 1 is to drawing steel plate type welding rectangular steel-tube concrete column, it is characterised in that described Welding rectangular steel pipe is welded by four blocks of steel plates, and cross section is rectangle.
3. built-in X-type as claimed in claim 1 is to drawing steel plate type welding rectangular steel-tube concrete column, it is characterised in that the X Type is to drawing the steel structure member that steel plate is cross section X-shaped, and its size is with welding rectangular steel-tube concrete column Diagonal Dimension phase Matching.
4. built-in X-type as claimed in claim 1 is to drawing steel plate type welding rectangular steel-tube concrete column, it is characterised in that institute It is prefabricated component to drawing steel plate and the steel plate welded needed for rectangular steel pipe to state X-type, and setting according to welding rectangular steel-tube concrete column Meter size carries out groove design in advance.
5. built-in X-type as claimed in claim 1 is to drawing steel plate type welding rectangular steel-tube concrete column, it is characterised in that two pieces of X Type is to drawing the height of steel plate as the 1/4 of welding rectangular steel pipe clear height.
6. built-in X-type as claimed in claim 1 is to drawing steel plate type to weld the construction method of rectangular steel-tube concrete column, its feature It is:
(1)According to welding rectangular steel-tube concrete column design size, the master that circular opening is uniformly provided with along longitudinal direction that will be processed Steel plate and helper spring are welded into X-shaped to drawing steel plate by X-type to drawing steel plate longitudinal seam;
(2)By the X-type being welded to drawing steel plate to be placed in the diagonal positions at welding rectangular steel pipe both ends, and along welding rectangular steel pipe Longitudinal direction height is about in the range of 1/4 post clear height, finally, the steel plate welded needed for rectangular steel pipe is welded into welding rectangle steel successively The X-shaped at pipe both ends is to the four sides of drawing steel plate, and X-type built in formation is to drawing steel plate type welding rectangular steel pipe;
(3)At the construction field (site), by prefabricated built-in X-type to drawing steel plate type welding rectangular steel pipe to be lifted into corresponding installation site Afterwards, core concrete is poured in steel plate type welding rectangular steel pipe to drawing to built-in X-type, X built in formation after core concrete hardening Type is to drawing steel plate type welding rectangular steel-tube concrete column.
CN201611249027.XA 2016-12-29 2016-12-29 Built-in X-type is to drawing steel plate type welding rectangular steel-tube concrete column and construction method Active CN106639151B (en)

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CN105133790A (en) * 2015-08-28 2015-12-09 风范绿色建筑(常熟)有限公司 High-strength square steel tube concrete pillar
CN105714984B (en) * 2016-01-28 2020-05-19 广东工业大学 Square and special-shaped concrete-filled steel tube column with built-in round tube and tie bars and construction method thereof
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