CN103850363B - Prefabricated through hole assembly type reinforced concrete shear wall and construction method of prefabricated through hole assembly type reinforced concrete shear wall - Google Patents

Prefabricated through hole assembly type reinforced concrete shear wall and construction method of prefabricated through hole assembly type reinforced concrete shear wall Download PDF

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Publication number
CN103850363B
CN103850363B CN201410088737.3A CN201410088737A CN103850363B CN 103850363 B CN103850363 B CN 103850363B CN 201410088737 A CN201410088737 A CN 201410088737A CN 103850363 B CN103850363 B CN 103850363B
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shear
construction
hole
reinforced concrete
prefabricated
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CN201410088737.3A
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Chinese (zh)
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CN103850363A (en
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朱彤
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赵春樵
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Abstract

The invention provides a construction method of the prefabricated through hole assembly type reinforced concrete shear wall. A plurality of vertical through holes are formed in a wall body, a plurality of movably connected vertical steel bars are respectively arranged in each through hole, the upper ends of the vertical steel bars are higher than the wall body, the lower ends of the vertical steel bars are connected with the steel bars of the lower layer shear wall, and the bottom end of the wall body is provided with support feet. The vertical steel bars are movably connected in the through holes of the shear wall, and when the steel bars of the upper and lower layers of shear wall are connected, the joint position is adjustable in the vertical direction, so the mutual staggering of the adjacent vertical steel bar joints can be conveniently ensured, the installation quality is enabled to conform to national relevant standards, the concrete casting and the steel bar connection in the through holes can be constructed according to the traditional cast-in-plate reinforced concrete process, the construction difficulty is reduced, and the engineering quality is improved.

Description

The construction method of the assembled steel reinforced concrete shear force wall of prefabricated through hole

Technical field

The invention provides the construction method of the assembled steel reinforced concrete shear force wall of a kind of prefabricated through hole.

Background technology

Prefabricated solid assembled steel reinforced concrete shear force wall in the past, the sleeve be connected with lower floor shear force wall reinforcing steel bar is all embedded in the body of wall bottom of upper strata shear wall, connect so levels vertical reinforcement all adopts sleeve to be in the milk at same absolute altitude, its structure can not meet the relevant regulations in national current art specification and standard:

1, " Code for design of concrete structures GB50010--2010 " 8.4.7 bar " mechanical connecting joint of Reinforcement should stagger mutually ", " the longitudinal tensile bar splice area percentage being positioned at same jointing should not be greater than 50% ".

2, the 4th section of " Code for design of concrete structures GB50010--2010 " 11.1.7 article " Reinforcement jointing should avoid beam-ends, styletable hoop reinforcement; As when this connects, mechanical connection or welding must should be adopted ", the 5th section " concrete component is positioned at the Reinforcement joint area percentage of same jointing no more than 50% ".

3, " Concrete Structures of Tall Building designing technique code JGJ3--2010 " the 3rd section of 7.2.20 article " in sleeper and newel post, longitudinal reinforcement connects and anchoring requirement should be identical with frame column, should meet the pertinent regulations of this code Section 6.5 ".

4, " Concrete Structures of Tall Building designing technique code JGJ3--2010 " the 5th section of 6.5.3 article " is positioned at the tensile reinforcement joint area percentage of same jointing no more than 50% ", 6th section " when joint location cannot avoid beam-ends, styletable hoop reinforcement; the mechanical connecting joint meeting equal strength and require should be adopted, and bar splice area percentage is no more than 50% ".

Prefabricated solid assembled steel reinforced concrete shear force wall is in the past in work progress, first install the shear wall of lower floor, after completing the horizontal system operation of beam slab, again the reserved steel bar that the sleeve of upper strata shear wall and lower floor shear wall stretch out from beam slab upper surface is connected, its quality control error is within the scope of grade, very high to required precision, but in practice of construction process, store, transport and build all inevitable reinforcing bar reserved to precast shear wall in the process of beam slab and cause disturbance, reinforcing bar is caused to be out of shape and to be infected with concrete, so upper, before lower floor's shear wall connects, need to carry out investigating by root to reinforcing bar, correct detection is carried out to the reinforcing bar of distortion, what cause was poured in sleeve is high efficient injection slurry, must process being infected with concrete underproof reinforcing bar, not only increase workload, its difficulty of construction is also large, require very high to the technical level of workman, the difficulty of fixing quality control is increased.

Summary of the invention

The object of this invention is to provide the construction method of the assembled steel reinforced concrete shear force wall of a kind of prefabricated through hole, use shear wall and the construction method thereof of this technology, when the Vertical bar connection of upper and lower story shear wall, adjacent vertical reinforcement joint location can easily be realized mutually stagger, reduce the difficulty of construction of fabricated shear wall, improve workmanship.

Technical scheme of the present invention is: the assembled steel reinforced concrete shear force wall of prefabricated through hole, there is the body of wall of steel concrete, it is characterized in that: in body of wall, be provided with some vertical through holes, the some vertical reinforcements be flexibly connected are housed in each through hole respectively, the upper end of vertical reinforcement higher than body of wall, the lower end of vertical reinforcement and the bar connecting of lower floor's shear wall.The bottom of body of wall is provided with leg.

The assembled steel reinforced concrete shear force wall of prefabricated through hole becomes the construction method of wall, it is characterized in that comprising the following steps:

The first step: the wall body construction making the assembled steel reinforced concrete shear force wall of prefabricated through hole;

Second step: assembling:

1., first the wall body construction of shear wall is winched to installation position above lower floor's shear wall, vertical reinforcement is loaded in the through hole of shear wall body component, vertical reinforcement lower end overlaps with lower floor shear force wall reinforcing steel bar or is mechanically connected or welds, or vertical reinforcement lower end is first overlapped with lower floor shear force wall reinforcing steel bar or is mechanically connected or welds, again vertical reinforcement is inserted in the through hole of shear wall body component after connection;

2., to the wall body construction having leg, the cavity both sides fixed support template be made up of leg in body of wall bottom; To the wall body construction without leg, directly enter next step;

3., from through hole upper end to concreting in through hole, wall is solidified into.

Advantage of the present invention is: when mounted, because vertical reinforcement is be flexibly connected in the through hole of shear wall, during the bar connecting of upper and lower story shear wall, joint location is vertically adjustable up and down, so can easily ensure that adjacent vertical reinforcement joint location staggers mutually, guarantee that its installation quality meets the relevant criterion of country, bar connecting in through hole and concreting all can by the construction technologies of traditional cast-in-situ steel reinforced concrete, form of construction work than ever, reduce difficulty of construction, improve workmanship.Form of construction work is in the past in sleeve, pour into high efficient injection slurry, and grout material requires reinforcing bar remains without concrete, needs to carry out by root investigation, cleaning reinforcing bar.

Accompanying drawing explanation

Fig. 1 is the structural representation of the assembled steel reinforced concrete shear force wall of the prefabricated through hole of the present invention;

Fig. 2 is the top view of Fig. 1;

The wall body construction schematic diagram of the assembled steel reinforced concrete shear force wall of the prefabricated through hole of Fig. 3 the present invention;

Fig. 4 is the A-A sectional drawing of Fig. 3;

Fig. 5 is the cast-in-situ concrete position schematic diagram of the assembled steel reinforced concrete shear force wall of the prefabricated through hole of the present invention;

Fig. 6 is the cross sectional shape schematic diagram of the through hole of the assembled steel reinforced concrete shear force wall of the prefabricated through hole of the present invention;

Fig. 7 is the prefabricated through hole of the present invention assembled steel reinforced concrete shear wall opening end and cast-in-place end to the solution schematic diagram of hole and cast-in-place node;

Fig. 8 is the Vertical bar connection schematic diagram of the assembled steel reinforced concrete shear force wall of the prefabricated through hole of the present invention;

The Vertical bar connection schematic diagram of the original technology reinforced concrete shear wall of Fig. 9;

Figure 10 is the schematic diagram of the prefabricated solid assembled steel reinforced concrete shear force wall of original technology;

Figure 11 is the B-B sectional drawing of Figure 10.

The reinforcing bar of 1 body of wall, 2 through holes, 3 vertical reinforcements, 4 steel ties, 5 horizontal reinforcements, 6 joints, 7 legs, 8 beam slabs, 9 lower floor's shear walls, 10 cavitys, 11 lower floor's shear walls, 12 holes, 13 yi word pattern cast-in-place node, 14L type cast-in-place node, 15 cross cast-in-place node, 16T type cast-in-place node, 17 prior art shear walls in figure.

Detailed description of the invention

The assembled steel reinforced concrete shear force wall of prefabricated through hole, there is the body of wall 1 of steel concrete, as shown in Figure 4, horizontal reinforcement 5 in wall reinforcement extends to outside body of wall, horizontal reinforcement sponson is used for cast-in-place node arrangement of reinforcement between adjacent shear wall and uses, some vertical through holes 2 are provided with in described body of wall, as shown in Figure 6, the cross section of through hole can be positive circle, oval, the single shape such as round rectangle, also can be the composite figure of above-mentioned shape, the some vertical reinforcements 3 be flexibly connected are housed in each through hole respectively, each vertical reinforcement is connected by steel tie 4, the upper end of vertical reinforcement is higher than body of wall, the lower end of the vertical reinforcement in the shear wall body member through-hole of upper strata is connected with the reinforcing bar 11 of lower floor's shear wall, the mode of the overlap joint that method of attachment adopts construction work to commonly use or mechanical connection or welding.

The bottom of body of wall is provided with leg 7.Leg can make body of wall and beam slab leave body of wall bottom cavity 10, and after concreting in through hole, this body of wall bottom cavity can be used as the position of macroscopic examination, the convenient quality checking cast-in-situ concrete;

The construction method of the assembled steel reinforced concrete shear force wall of prefabricated through hole, comprises the following steps:

The first step: the wall body construction making the assembled steel reinforced concrete shear force wall of prefabricated through hole; Horizontal steel bar in wall body construction meets Design of Shear-wall Structure requirement, and after installing, the main muscle of level does not need other configuration in component, the conditional requests such as meanwhile, its arrangement of reinforcement checking computation results can meet lifting component, deposits, transport;

Second step: assembling:

1, first the wall body construction of shear wall is winched to installation position, loaded by vertical reinforcement in the through hole of shear wall body component, vertical reinforcement lower end overlaps with lower floor shear force wall reinforcing steel bar or is mechanically connected or welds; Another kind of mode is: first overlapped with lower floor shear force wall reinforcing steel bar or be mechanically connected or weld in vertical reinforcement lower end, then inserted by vertical reinforcement in the through hole of shear wall body component;

2, to the wall body construction having leg, the cavity 10 both sides fixed support template be made up of leg in body of wall bottom, prevents concrete excessive; To the wall body construction without leg, directly enter next step;

3, from through hole upper end to concreting in through hole, wall is solidified into.

When the reinforcing bar that the reinforcing bar be located in through hole and lower floor shear wall 9 stretch out beam slab 8 is connected, its joint 6 position can be selected in the vertical range of vertical reinforcement, ensure to stagger mutually in the connector position of adjacent each group of vertical reinforcement, meet the requirement of national current art specification and standard, make its structural performance reliable.Meanwhile, also can lay the components such as penetration pipe in through hole, flexible function is suitable for.Bar connecting in through hole and concreting all by the construction technology of traditional cast-in-situ steel reinforced concrete, can reduce difficulty of construction, and quality is easily controlled.

The horizontal termination of the assembled steel reinforced concrete shear force wall of prefabricated through hole of the present invention (calling shear wall in the following text) provides two schemes, is namely located at the cast-in-place end of shear wall body one end adjacent with cast-in-place node and the hole end of one end adjacent with hole 12:

Cast-in-place end is used for using with the connection of cast-in-place node.Cast-in-place node is identical with the structure of prior art, carry out node after horizontal reinforcement reserved for adjacent two groups of shear walls is participated in arrangement of reinforcement to build, the integral installation construction requirement of yi word pattern cast-in-place node 13, L-type cast-in-place node 14, T-shaped cast-in-place node 15, cross cast-in-place node 16 can be met as shown in Figure 7.

Hole end is solid concrete, and the Vertical bar connection of levels shear wall adopts sleeve grouting to connect, and after installing, component hole end Vertical Reinforcement does not need other configuration; Meet shear wall when mounted and have hole end, need the vertical reinforcement only having hole end of high-precision correction, comparatively in conventional art, high-precision correction is carried out to whole vertical reinforcement and compare, decrease workload, reduce difficulty of construction, make quality become easy control.

The vertical reinforcement that non-hole end Vertical Reinforcement is namely described, Design of Shear-wall Structure requirement can be met, prefabricated units are utilized to take out hole arrangement of cavities vertical reinforcement and steel tie thereof, the mode that bar connecting can adopt overlap joint or be mechanically connected or weld, meets national current art specification and standard staggers and area ratio requirement about bar splice position.

The simultaneously shear wall of this technology, because of having through hole, weight reduction, if shear wall grow 1.8 meters, thick 0.2 meter, high 2.5 meters, its deadweight is 2.25 tons; Prefabricated solid shear wall member dead weight is large, and the full cast-in-place construction project of tradition generally uses the Lifting Capacity of crane to be difficult to meet the demands now, needing the crane of the larger Lifting Capacity of buying separately, increasing investment for completing this type of project construction.And the assembled steel reinforced concrete shear force wall of the prefabricated through hole of the present invention of same size, take out just circular nine holes, lower end band leg, through-hole diameter is 140mm, the leg at two ends is wide is 130mm, and leg height is 100mm, and the deadweight of wall body construction is 1.31 tons, 58 ﹪ only having solid component to conduct oneself with dignity, can reduce hoisting cost.

It is wide that the assembled steel reinforced concrete shear force wall of prefabricated through hole of the present invention is suitable for the scope of application, is applicable to the highrise building of shear wall structure, the little high level of short-shear wall structure and multistory building, meets industrialized development direction, practical.

Claims (2)

1. the construction method of the assembled steel reinforced concrete shear force wall of prefabricated through hole, is characterized in that, comprise the following steps:
The first step: the wall body construction (1) making the assembled steel reinforced concrete shear force wall of prefabricated through hole; Some vertical through holes (2) are provided with in wall body construction (1);
Second step: assembling:
1., first the wall body construction (1) of shear wall is winched to installation position above lower floor's shear wall, the some vertical reinforcements (3) be flexibly connected are loaded in the through hole (2) of the wall body construction (1) of shear wall; Ensure that the upper end of vertical reinforcement (3) is higher than wall body construction (1), the lower end of vertical reinforcement (3) and the bar connecting of lower floor's shear wall; Connected mode comprises: bar splicing or the mechanical connection of vertical reinforcement (3) lower end and lower floor shear wall or weld, or, by vertical reinforcement (3) lower end first with bar splicing or the mechanical connection of lower floor shear wall or weld, again vertical reinforcement (3) is inserted in the through hole (2) of shear wall body component (1) after connection;
2. from through hole (2) upper end to through hole (2) interior concreting, body of wall is solidified into.
2. the construction method of the assembled steel reinforced concrete shear force wall of prefabricated through hole according to claim 1, it is characterized in that, the bottom of described wall body construction (1) is provided with leg (7), step 2. before be also included in cavity (10) the both sides fixed support template that wall body construction (1) bottom is made up of leg (7).
CN201410088737.3A 2014-03-11 2014-03-11 Prefabricated through hole assembly type reinforced concrete shear wall and construction method of prefabricated through hole assembly type reinforced concrete shear wall CN103850363B (en)

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CN204059665U (en) * 2014-07-02 2014-12-31 山东万斯达建筑工业化研究院有限公司 A kind of prefabricated round type shear wall
CN106245817A (en) * 2016-09-20 2016-12-21 中国建筑第七工程局有限公司 A kind of fabricated shear wall vertical connection structure and installation method thereof
CN108643392A (en) * 2018-04-28 2018-10-12 中国十七冶集团有限公司 A kind of assembly concrete shear wall with cavity
CN108729591B (en) * 2018-05-22 2020-05-01 吉林建筑大学 Positioning device and positioning method for vertically distributed connecting steel bars of round hole plate shear wall
CN109024875A (en) * 2018-07-24 2018-12-18 山东建筑大学 A kind of assembled integral concrete component and construction method

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US3908324A (en) * 1973-09-20 1975-09-30 Robert K Stout Concrete structure including modular concrete beam and method of making same
CN102061803B (en) * 2010-11-26 2012-05-23 清华大学建筑设计研究院 Shear wall structure building based on cross-hole prefabricated reinforced concrete template and construction method thereof
CN102433945B (en) * 2011-08-30 2013-09-04 东南大学 Vertical mixed connection structure and method of prefabricated internal wallboards for assembling shear wall structure
CN102808465B (en) * 2012-08-08 2014-07-09 沈阳建筑大学 Assembly connecting structure and assembly connecting method of assembled concrete frame and shear wall combination
CN102808450A (en) * 2012-08-28 2012-12-05 初明进 Assembled monolithic shear wall building structure and construction method thereof
CN203769116U (en) * 2014-03-11 2014-08-13 朱彤 Prefabricated through hole assembly type reinforced concrete shear wall

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