CN101413304B - Cast-in-situ concrete hollow exterior wall and construction method thereof - Google Patents

Cast-in-situ concrete hollow exterior wall and construction method thereof Download PDF

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Publication number
CN101413304B
CN101413304B CN2008103061798A CN200810306179A CN101413304B CN 101413304 B CN101413304 B CN 101413304B CN 2008103061798 A CN2008103061798 A CN 2008103061798A CN 200810306179 A CN200810306179 A CN 200810306179A CN 101413304 B CN101413304 B CN 101413304B
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CN
China
Prior art keywords
concrete hollow
reinforcing bar
pipe
concrete
cast
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CN2008103061798A
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Chinese (zh)
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CN101413304A (en
Inventor
李军
王载
杨发兵
李景芳
张谦
王玉兰
罗春
钟燕
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中建二局第三建筑工程有限公司
中国建筑第二工程局有限公司
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Priority to CN2008103061798A priority Critical patent/CN101413304B/en
Publication of CN101413304A publication Critical patent/CN101413304A/en
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Abstract

The invention relates to a cast-in-situ concrete hollow outer wall and a construction method thereof. The cast-in-situ concrete hollow outer wall comprises a concrete hollow wall body and reinforcing steel bars inside the wall body, wherein the inside of the concrete hollow wall body is set into a whole through concrete hollow thin wall pipes arranged vertically side by side at intervals and concrete around the concrete hollow thin wall pipes; two ribs of the concrete hollow thin wall pipes along the length direction of the wall body are horizontally distributed with limiting reinforcing steel bars inside the wall body and limiting reinforcing steel bars outside the wall body respectively; two ribs of the concrete hollow thin wall pipes along the short direction of the wall body are horizontally distributed with limiting reinforcing steel bars between pipes; and two ends of the limiting reinforcing steel bars between the pipes are bonded with the limiting reinforcing steel bars inside the wall body and the limiting reinforcing steel bars outside the wall body respectively into a whole. The cast-in-situ concrete hollow outer wall and the construction method thereof can effectively shorten construction period, reduce resource consumption, use environment-friendly materials with lower comprehensive construction cost, and can reduce material consumption of the concrete in large quantity, further reduce hydration heat and temperature difference generated in the cast process of large volume of the concrete, avoid the generation of cracks, and can correspondingly save constructional steel bars.

Description

Cast-in-situ concrete hollow exterior wall and job practices thereof
Technical field
The present invention relates to a kind of building concrete exterior wall, particularly a kind of super thick outer wall of basement, and the job practices of this exterior wall.
Background technology
The building basement external wall construction adopts the form of concrete pouring usually, owing to build back exterior wall concrete in process of setting, heat of hydration temperature rise leakdown rate is too fast, and the concrete surface dehydration is shunk, and causes the generation of wall body slit easily.The increase of cement consumption not only makes construction cost improve, and setting time prolongs, and also makes the activity of cement become big, and volume stability descends, and easily causes shrinkage strain.The generation of out-wall crack has multiple restive factor, also has factors such as concrete proportioning is improper, maintenance is improper except that the basement structure problem, can cause that all the crack produces.Super thick out-wall crack has become the ubiquitous problem of outer wall of basement, very easily causes potential safety hazard.Need a kind of new external wall structure and technology in the construction, fundamentally solve the generation in crack.
Summary of the invention
The invention provides a kind of cast-in-situ concrete hollow exterior wall and job practices thereof, solve in the existing super thick external wall construction and be easy to generate the heat of hydration and the temperature difference, be easy to generate the technical problem in crack, and solve existing super thick external wall construction high material consumption, the technical problem that cost is high.
The technical solution adopted for the present invention to solve the technical problems is:
This cast-in-situ concrete hollow exterior wall, comprise the concrete hollow body of wall, and the reinforcing bar of body of wall inside, it is characterized in that: cast-in-place concrete setting is an integral body around concrete hollow light-wall pipe that is distributed side by side by vertical interval in the concrete hollow body of wall and the concrete hollow light-wall pipe, along body of wall length to concrete hollow light-wall pipe both sides of the chest respectively horizontal arrangement body of wall inner side limiting-position reinforcing bar and the spacing reinforcing bar of wall outer side are arranged, concrete hollow light-wall pipe both sides of the chest horizontal arrangement along the body of wall short has spacing reinforcing bar between pipe, and the two ends of spacing reinforcing bar become whole with the inboard reinforcing bar of body of wall respectively between pipe with the wall outer side reinforcing bar binding;
The top of above-mentioned concrete hollow light-wall pipe is furnished with the anti-floating reinforcing bar along the body of wall short, and the two ends of anti-floating reinforcing bar are connected with the wall outer side reinforcing bar with the inboard reinforcing bar of body of wall respectively.
Spacing reinforcing bar can be stirrup or drag hook between aforementioned tube.
Above-mentioned anti-floating reinforcing bar can be stirrup or drag hook.
The job practices of this cast-in-situ concrete hollow exterior wall is characterized in that construction sequence is as follows:
Step 1, the vertical and horizontal reinforcement of colligation wall outer side;
Step 2, body of wall inner side limiting-position reinforcing bar, the spacing reinforcing bar of wall outer side that colligation fixing concrete hollow thin-wall pipe is required, and spacing reinforcing bar between pipe;
Step 3 is vertically placed the concrete hollow light-wall pipe, after the lower-layer concrete hollow thin-wall pipe places, at concrete hollow light-wall pipe top colligation anti-floating reinforcing bar, places upper strata concrete hollow light-wall pipe after the anti-floating reinforcing bar binding is finished again;
Step 4, the vertical and horizontal reinforcement of colligation body of wall inboard;
Step 5 installs wall form;
Step 6, fluid concrete;
Step 7, concrete curing, form removal.
Above-mentioned steps 6 available steel pipe above body of wall before the fluid concrete is pushed down, and steel pipe and body of wall handling frame are connected firmly, and during the concrete hollow light-wall pipe to the superiors to be cast, removes steel pipe while pouring into a mould.
Above-mentioned steps 6 is the layering continuous pouring when fluid concrete.
Beneficial effect of the present invention is as follows:
The present invention is in cast-in-place solid exposed wall structure, press the five equilibrium spacing and in body of wall, place permanent BDF concrete hollow light-wall pipe, flank is arranged horizontal and vertical spacing reinforcing bar between pipe, and with body of wall in outside reinforcing bar binding becomes whole, with core pipe pore-forming technique formation cast-in-place hollow external wall structure.This technology is used cast-in-place hollow structural system first in the exterior wall under buried, super heavy back, continued to use the advantage of cast-in-situ hollow floor plate, effective reduction of erection time, reduce resource consumption, and material environment friendly, comprehensive cost is lower, can reduce concrete material consumption in a large number, and then reduce the heat of hydration and the temperature difference that produce in the casting of concrete in mass process, and avoid the generation in crack, simultaneously can corresponding saving distributing bar.
The cast-in-situ concrete hollow exterior wall job practices is the novel external wall job practices that adopts BDF high-strength concrete light-wall pipe pore-forming technique to form, and is specially adapted to buried, super thick outer wall of basement, also applicable to the construction of other super thick exterior walls.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the structural representation behind the concrete hollow light-wall pipe top colligation anti-floating reinforcing bar.
Reference numeral: spacing reinforcing bar, the inboard reinforcing bar of 6-body of wall, 7-wall outer side reinforcing bar, 8-anti-floating reinforcing bar between 1-concrete wall, 2-concrete hollow light-wall pipe, 3-body of wall inner side limiting-position reinforcing bar, the spacing reinforcing bar of 4-wall outer side, 5-pipe.
The specific embodiment
Embodiment is referring to Fig. 1, shown in Figure 2, this cast-in-situ concrete hollow exterior wall, comprise concrete hollow body of wall 1, and the reinforcing bar of body of wall inside, cast-in-place concrete setting is an integral body around concrete hollow light-wall pipe 2 that is distributed side by side by vertical interval in the concrete hollow body of wall and the concrete hollow light-wall pipe 2, along body of wall length to concrete hollow light-wall pipe 2 both sides of the chest respectively horizontal arrangement body of wall inner side limiting-position reinforcing bar 3 and the spacing reinforcing bar 4 of wall outer side are arranged, concrete hollow light-wall pipe both sides of the chest horizontal arrangement along the body of wall short has spacing reinforcing bar 5 between pipe, 7 colligations become integral body with the wall outer side reinforcing bar with the inboard reinforcing bar 6 of body of wall respectively at the two ends of spacing reinforcing bar 5 between pipe, and spacing reinforcing bar 5 is stirrup or drag hook between pipe.
Referring to Fig. 2, the top of above-mentioned concrete hollow light-wall pipe is furnished with anti-floating reinforcing bar 8 along the body of wall short, and the two ends of anti-floating reinforcing bar are connected with wall outer side reinforcing bar 7 with the inboard reinforcing bar 6 of body of wall respectively.Anti-floating reinforcing bar 8 can be stirrup or drag hook.
The construction sequence and the key points for operation of the job practices of this cast-in-situ concrete hollow exterior wall are as follows:
Step 1, the vertical and horizontal reinforcement of colligation wall outer side;
Determine the length and the sectional dimension of concrete hollow light-wall pipe according to body of wall concrete condition and template specification.With the axis is that main root marks a core position according to comb figure, for the body of wall reinforcing bar binding is got ready.Require the colligation wall outer side vertically to reach horizontal reinforcement according to drawing, note the colligation requirement of bar splice place, reserve reinforcement cover on request.
Step 2, body of wall inner side limiting-position reinforcing bar, the spacing reinforcing bar of wall outer side that colligation fixing concrete hollow thin-wall pipe is required, and spacing reinforcing bar between pipe;
The horizontal movement of structure muscle major limitation concrete hollow light-wall pipe.This part should be set up according to designing requirement, as no designing requirement, generally increases the structure muscle of horizontal both direction.Length direction is that every 1000mm grows body of wall inner side limiting-position reinforcing bar and the spacing reinforcing bar of wall outer side that a section concrete hollow thin-wall pipe is established 2 φ 12, lacks direction and establishes spacing reinforcing bar between the pipe of 2 φ 12.
Step 3 is vertically placed the concrete hollow light-wall pipe, after the lower-layer concrete hollow thin-wall pipe places, at concrete hollow light-wall pipe top colligation anti-floating reinforcing bar, places upper strata concrete hollow light-wall pipe after the anti-floating reinforcing bar binding is finished again;
(1), place should to handle with care in the concrete hollow light-wall pipe process and pipe do not bumped brokenly, do not use damaged concrete hollow light-wall pipe.
(2), after the lower-layer concrete hollow thin-wall pipe places, confirm and the clear spacing of access tube spacing and pipe and exterior wall reinforcing bar, after all meeting the requirements, colligation anti-floating reinforcing bar.
(3), during concreting, the core pipe come-up of being shaken can adopt the beading method to solve the fixing and come-up of core pipe, promptly establish 2 φ 8 reinforcing bars and bear down on one at every section Guan Guanding,
(4), after the anti-floating reinforcing bar binding finishes, place upper strata core pipe.
Step 4, the vertical and horizontal reinforcement of colligation body of wall inboard;
Require colligation body of wall medial shaft to reaching horizontal reinforcement according to drawing, note the colligation requirement of bar splice place, reserve reinforcement cover on request.
Step 5 installs wall form;
The cast-in-place hollow outer wall template adopts 70 serial little punching blocks, and through-wall bolt is by passing in the concrete hollow Thin-wall Tube rib.According to the arrangement (pipe diameter 550, spacing 150mm) of concrete size of body of wall and pipe, through-wall bolt level interval 700mm (just in time from the pipe rib, passing), vertical spacing 400mm.
Step 6, fluid concrete; Above body of wall before the fluid concrete, push down, and steel pipe and body of wall handling frame are connected firmly, during the concrete hollow light-wall pipe to the superiors to be cast, remove steel pipe while pouring into a mould with Φ 48 steel pipes.It during fluid concrete the layering continuous pouring.
Concreting is very crucial to this new technology of cast-in-situ concrete hollow exterior wall, before the construction, must do detailed construction and tell somebody what one's real intentions are, and the operator must be in strict accordance with requiring construction.
(1), the cast-in-place hollow concrete exterior wall wants continuous placing, concrete is answered the layering blanking, builds THICKNESS CONTROL in 450mm for every layer, vibration compacting surpasses the concrete initial setting time blanking time of levels.
(2), during concreting, be accurate blanking, use concrete delamination control chi bar, on the chi bar, be decorated with mark by building thickness,, prevent the blocked up situation of layering in order to control blanking height, also corresponding scale to be arranged on the vibrating head pipe simultaneously, in order to the degree of depth of control vibrating head insertion.
(3), when building, build symmetrically in the interior outside, avoids one-sided and build too highly, causes the concrete hollow light-wall pipe to tilt or squeeze broken.During concreting, must guarantee the not positioning of concrete hollow light-wall pipe, non-rising.
(4), adopt 30 vibrating spears to vibrate, avoid the direct vibrated concrete hollow thin-wall pipe of vibrating spear,, must guarantee that concrete rib vibrates effectively in order to avoid destroy the concrete hollow light-wall pipe at hollow exterior wall reinforcing bar, the intensive place of concrete hollow light-wall pipe.The slotting point of vibrating head is evenly distributed, inserts angle and should spend-50 degree or vertical into about 45 with concrete surface, moves regularly by building order, must not leak and shake.The distance of vibrator and template should be greater than 0.5 times (about 150mm) of its operating radius.
Step 7, concrete curing, form removal.
(1), concrete curing: according to climate condition at that time, body of wall adopts corresponding maintenance measure, but the maintenance fate is no less than 7 days.
(2), concrete test block: concrete should be pressed every 100m at the scene 3Sampling is made two groups of marks and is supported test blocks (a group pressure testing, a group standby), not enough 100m 3The time, press 100m 3Consider; Keep somewhere one group simultaneously with condition curing test block control early strength, so that determine striking time.Impervious test piece is by every 500m 3Sampling is kept somewhere one group at every turn, and 6 test specimens are one group, and sends into mark and support the chamber maintenance, and curing time is no less than 28 days, is no more than 90 days; The sample of concrete impervious test block, intensity test block must be taken from the concrete mix that same train number is mixed system.600 ℃ of skies of structural solid check can be determined to keep somewhere with the condition curing test block according to plan.
(3), form removal: according to test cube in the same condition, guarantee that concrete does not fall stupefied not arrisdefect, can remove wall form.

Claims (6)

1. cast-in-situ concrete hollow exterior wall, comprise concrete hollow body of wall (1), and the reinforcing bar of body of wall inside, it is characterized in that: the concrete hollow light-wall pipe (2) and the cast-in-place on every side concrete setting of concrete hollow light-wall pipe (2) that are distributed side by side by vertical interval in the concrete hollow body of wall are an integral body, along body of wall length to concrete hollow light-wall pipe (2) both sides of the chest respectively horizontal arrangement body of wall inner side limiting-position reinforcing bar (3) and the spacing reinforcing bar of wall outer side (4) are arranged, concrete hollow light-wall pipe both sides of the chest horizontal arrangement along the body of wall short has spacing reinforcing bar (5) between pipe, and colligation becomes integral body with wall outer side reinforcing bar (7) with the inboard reinforcing bar of body of wall (6) respectively at the two ends of spacing reinforcing bar (5) between pipe;
The top of above-mentioned concrete hollow light-wall pipe is furnished with anti-floating reinforcing bar (8) along the body of wall short, and the two ends of anti-floating reinforcing bar are connected with wall outer side reinforcing bar (7) with the inboard reinforcing bar of body of wall (6) respectively.
2. cast-in-situ concrete hollow exterior wall according to claim 1 is characterized in that: spacing reinforcing bar (5) is stirrup or drag hook between aforementioned tube.
3. cast-in-situ concrete hollow exterior wall according to claim 1 is characterized in that: above-mentioned anti-floating reinforcing bar (8) is stirrup or drag hook.
4. the job practices of a cast-in-situ concrete hollow exterior wall is characterized in that construction sequence is as follows:
Step 1, the vertical and horizontal reinforcement of colligation wall outer side;
Step 2, body of wall inner side limiting-position reinforcing bar, the spacing reinforcing bar of wall outer side that colligation fixing concrete hollow thin-wall pipe is required, and spacing reinforcing bar between pipe;
Step 3 is vertically placed the concrete hollow light-wall pipe, after the lower-layer concrete hollow thin-wall pipe places, at concrete hollow light-wall pipe top colligation anti-floating reinforcing bar, places upper strata concrete hollow light-wall pipe after the anti-floating reinforcing bar binding is finished again;
Step 4, the vertical and horizontal reinforcement of colligation body of wall inboard;
Step 5 installs wall form;
Step 6, fluid concrete;
Step 7, concrete curing, form removal.
5. cast-in-situ concrete hollow exterior wall job practices according to claim 4, it is characterized in that: above-mentioned steps 6 is pushed down with steel pipe above body of wall before the fluid concrete, and steel pipe and body of wall handling frame be connected firmly, during the concrete hollow light-wall pipe to the superiors to be cast, remove steel pipe while pouring into a mould.
6. cast-in-situ concrete hollow exterior wall job practices according to claim 4 is characterized in that: above-mentioned steps 6 is the layering continuous pouring when fluid concrete.
CN2008103061798A 2008-12-11 2008-12-11 Cast-in-situ concrete hollow exterior wall and construction method thereof CN101413304B (en)

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Application Number Priority Date Filing Date Title
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CN101413304B true CN101413304B (en) 2010-06-23

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CN101858143B (en) * 2010-07-09 2012-08-08 徐学文 Mold pipe building construction technology
CN102410029A (en) * 2011-12-30 2012-04-11 中铁二院工程集团有限责任公司 Mass hollow concrete tunnel lining structure
CN103046935B (en) * 2012-12-31 2016-02-03 西南交通大学 A kind of hoop perforate is greatly across the construction method of concrete in mass tunnel lining structure
CN103089273B (en) * 2013-01-14 2016-03-02 西南交通大学 A kind of longitudinal perforate is greatly across the construction method of concrete in mass tunnel lining structure
CN103498477B (en) * 2013-10-23 2016-09-21 中铁二院工程集团有限责任公司 Large volume hollow concrete structure for the backfill of large-scale cavity
CN103590423B (en) * 2013-11-30 2015-11-11 苏州建鑫建设集团有限公司 For the cast-in-place concrete PVC hollow tube wallboard of outer wall of basement
AT516119B1 (en) * 2014-08-12 2016-05-15 Rapperstorfer Hubert Double wall and method for producing a double wall
CN104727464A (en) * 2015-03-26 2015-06-24 江苏永通市政园林建设有限公司 Weather-resistant thermal insulation exterior wall
CN105937279B (en) * 2016-06-06 2019-01-15 河北建筑工程学院 The cast-in-place Integral Steel frame wall filled with masonry system and construction method of steel disc limit connection

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