CN204780859U - Prefabrication - cast -in -place mixed underground continuous wall - Google Patents

Prefabrication - cast -in -place mixed underground continuous wall Download PDF

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Publication number
CN204780859U
CN204780859U CN201520351275.XU CN201520351275U CN204780859U CN 204780859 U CN204780859 U CN 204780859U CN 201520351275 U CN201520351275 U CN 201520351275U CN 204780859 U CN204780859 U CN 204780859U
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China
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cast
prefabricated
place
underground continuous
wall
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Inventor
卢超波
覃润浦
张红波
罗月静
冯明珠
张芮铭
杨庭伟
姜洪亮
钟乃龙
潘隆武
陀楚明
郑华斌
闭晓东
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Guangxi Transportation Research Institute
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Guangxi Transportation Research Institute
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Abstract

The utility model discloses a prefabrication - cast -in -place mixed underground continuous wall mainly comprises the cast -in -place wall body that fuses and the prefabricated wallboard of both sides, extension bar splicing that the steel reinforcement cage and the both sides of cast -in -place wall body prefabricated the wallboard. In view of the above, inventor make full use of prefabricates convenience, the agility of underground continuous wall technology, combines cast -in -place underground continuous wall's good waterproof nature, and corresponding construction method has been establish to post -cast strip thought in the reference prefab. The utility model overcomes cast -in -place diaphragm wall technology progress is slow, and the poor shortcoming of underground continuous wall structure prevention of seepage nature prefabricated completely, the construction can guarantee again portably that construction quality is good.

Description

Prefabricated-cast-in-place mixing diaphragm wall
Technical field
The utility model belongs to underground support structure construction technology field, particularly relates to a kind of prefabricated-cast-in-place mixing diaphragm wall.
Background technology
Diaphragm wall has the features such as Construction Vibration is little, noise is low, wall stiffness is large, geological adaptability is strong.Extensive use in the open cut engineering etc. of city deep big foundation pit, subway cut and cover tunneling and complicated geology.Diaphragm wall commonplace in Practical Project and construction method mainly contain:
(1) coercion underground continuous wall.As " a kind of novel full coercion underground continuous wall " (patent No. 201420507640.7 day for announcing 2015-01-14); " one can assemble flush type precast hollow diaphragm wall and construction method thereof " (number of patent application 201310258821.0 publication date 2013-10-02).
(2) cast-in-place diaphragm wall.As " post-tensioned prestressing diaphragm wall and construction method " (patent No. 201410064101.5 publication date 2014-06-04); " a kind of construction of diaphragm wall space enclosing structure " (number of patent application 201420122461.1 day for announcing 2013-10-02).
(3) half prefabricated half cast-in-place diaphragm walls.As " a kind of half prefabricated half cast-in-place diaphragm wall body and construction technology " (patent No. 201310320451.9 publication date 2015-02-11).
Above-mentioned technique is adopted to build each tool pluses and minuses of diaphragm wall.
Utility model content
The technical problems to be solved in the utility model is to provide prefabricated-cast-in-place mixing diaphragm wall that a kind of convenient construction is quick, barrier properties is good.
For solving the problems of the technologies described above, the utility model is by the following technical solutions: prefabricated-cast-in-place mixing diaphragm wall, prefabricated panel primarily of the cast-in-situ wall be connected and both sides thereof is formed, the reinforcing cage of cast-in-situ wall and the elongation bar splicing of both sides prefabricated panel.
The reinforcing cage at prefabricated panel two ends stretches out more than 20cm than the concrete width edge of building, along its reinforcing cage welding angle steel outside prefabricated panel width.
The elongation reinforcing bar of prefabricated panel adopts welding or improving bud grafting to increase longitudinal reinforcement.
For existing diaphragm wall and construction method Problems existing thereof, inventor has devised a kind of prefabricated-cast-in-place mixing diaphragm wall, prefabricated panel primarily of the cast-in-situ wall be connected and both sides thereof is formed, the reinforcing cage of cast-in-situ wall and the elongation bar splicing of both sides prefabricated panel.Accordingly, inventor makes full use of the convenience of coercion underground continuous wall technique, agility, the good water proofing property of combined cast-in-situ diaphragm wall, use for reference ater-casting thought in prefabricated component, establish corresponding construction method, that is: at the diaphragm wall prefabricated panel of the prefabricated required specification of precasting yard, after adopting the trenching construction scheme at interval to utilize groover grooving, hang width both sides and have the prefabricated panel extending reinforcing bar, recycling groover is to soil body grooving between two width prefabricated panels, and hang the reinforcing cage of colligation, reinforcing cage and prefabricated panel extend bar splicing, its Thickness Ratio prefabricated panel is slightly little, and transfer conduit poured in place concrete.It is slow that the utility model overcomes cast-in-place diaphragm wall technique progress, and the shortcoming of complete coercion underground continuous wall structure barrier properties difference, easy construction can ensure that again construction quality is good.
Accompanying drawing explanation
Fig. 1 is the structural representation of prefabricated panel in prefabricated-cast-in-place mixing diaphragm wall of the utility model.
Fig. 2 is the structural representation of precast reinforced cage in prefabricated-cast-in-place mixing diaphragm wall of the utility model.
Fig. 3 is the construction method schematic diagram of prefabricated-cast-in-place mixing diaphragm wall of the utility model.
In figure: (1b) and (1c) is the schematic diagram in (1a) cross section and vertical section respectively; (2a) and (2c) be the schematic diagram in (2b) cross section and vertical section respectively; 1 angle steel, 2 concreting longitudinal edge edges, connect longitudinal reinforcement after 3,4 transverse reinforcements, 5 reinforcing bars stretch out concrete length, 6 longitudinal reinforcements, 7 concreting widthwise edge edges, 8 concrete, 9 prefabricated panels put off groove, 10 grooving grab buckets, 11 cast in situs grooves, 12 slurry coat methods, 13 prefabricated panels, 14 reinforcing cages, 15 build conduit, 16 cast-in-situ concretes.
Detailed description of the invention
As depicted in figs. 1 and 2, prefabricated-cast-in-place mixing diaphragm wall of the utility model is formed primarily of the prefabricated panel 13 of the cast-in-situ wall be connected and both sides thereof, the reinforcing cage 14 of cast-in-situ wall and the elongation bar splicing of both sides prefabricated panel; The reinforcing cage at prefabricated panel two ends stretches out more than 20cm than the concrete width edge of building, along its reinforcing cage welding angle steel 1 outside prefabricated panel width; The elongation reinforcing bar of prefabricated panel adopts welding or improving bud grafting to increase longitudinal reinforcement.
The construction method of prefabricated-cast-in-place mixing diaphragm wall
According to the actual diaphragm wall size that need arrange, after the concrete dimensional parameters of lifting appliance ability energy Practical Project condition determination prefabricated panel and cast-in-situ wall, the angle steel of prefabricated corresponding size, after connect longitudinal reinforcement, transverse reinforcement, longitudinal reinforcement etc., wherein transverse reinforcement cuts and longly should consider that reinforcing bar stretches out the reinforcing bar of concreting longitudinal edge along 2 and stretches out concrete length.
At precasting yard assembling reinforcement cage, after adopting the template and cross form supporting of longitudinally wearing half bore, concreting 8, the reinforcing cage at prefabricated panel two ends stretches out more than 20cm than the concrete width edge of building; After maintenance to some strength, according to the length of stretching out and need rigidity and the intensity of constructing diaphragm wall, stripping also connects longitudinal reinforcement 3 after the position that reinforcing bar stretches out concrete length 5 adopts welding or the mode of colligation to arrange, and at the welding edges angle steel of longitudinal reinforcement 6.In Practical Project, for alleviating entire plate weight, also can adopt cancelled structure, and relevant thin section waterproof structure can be set according to classification of waterproof.
The transverse reinforcement 4 of the reinforcing cage of cast-in-situ concrete and longitudinal reinforcement, the concrete dimensional parameters according to cast-in-situ wall is processed, and adopts welding or improving bud grafting to become reinforcing cage.
After adopting the constructure scheme of interval grooving to utilize groover grooving, hang prefabricated panel, recycling groover is to the soil body grooving between two width prefabricated panels, and then hang the reinforcing cage of the good cast-in-situ wall of colligation in advance, reinforcing cage size can design according to Practical Project situation; By the elongation bar splicing of the reinforcing cage of cast-in-situ wall and both sides prefabricated panel, its Thickness Ratio prefabricated panel is slightly little, bar splicing increases integral rigidity and the intensity of diaphragm wall body, transfers to build conduit poured in place concrete 16 prefabricated panel of both sides is connected by cast-in-situ wall.
Applying specifically as shown in Figure 3 of diaphragm wall:
In Fig. 3 shown in (a), (b), utilize grooving to grab bucket 10, put off groove at slurry coat method to apply prefabricated panel under preventing the condition of landslip of the sides of the trench;
In Fig. 3 shown in (c), lifting machinery is adopted to put off in groove by prefabricated panel 13;
In Fig. 3 shown in (d), adopt same step to apply next section of prefabricated panel and put off groove 9, and adopt lifting machinery to put off in groove by another width prefabricated panel;
In Fig. 3 shown in (e), the cast in situs groove 11 between two width prefabricated panels is applied under slurry coat method 12 condition, adopt lifting machinery to put off in groove by reinforcing cage, lay overlap joint between rear reinforcing cage and two width prefabricated panels as shown in Fig. 3 (e) drawing;
In Fig. 3 shown in (f), (g), put off after in groove at 14 reinforcing cages, transfer 15 concreting tremie placing concrete, finally form prefabricated-cast-in-place mixing diaphragm wall shown in (h) in Fig. 3;
Repeat previous step until diaphragm wall completes.

Claims (3)

1. prefabricated-cast-in-place mixing diaphragm wall, is characterized in that the prefabricated panel primarily of the cast-in-situ wall be connected and both sides thereof is formed, the reinforcing cage of cast-in-situ wall and the elongation bar splicing of both sides prefabricated panel.
2. prefabricated-cast-in-place mixing diaphragm wall according to claim 1, is characterized in that: the reinforcing cage at described prefabricated panel two ends stretches out more than 20cm than the concrete width edge of building, along its reinforcing cage welding angle steel outside prefabricated panel width.
3. prefabricated-cast-in-place mixing diaphragm wall according to claim 2, is characterized in that: the elongation reinforcing bar of described prefabricated panel adopts welding or improving bud grafting to increase longitudinal reinforcement.
CN201520351275.XU 2015-05-27 2015-05-27 Prefabrication - cast -in -place mixed underground continuous wall Active CN204780859U (en)

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CN201520351275.XU CN204780859U (en) 2015-05-27 2015-05-27 Prefabrication - cast -in -place mixed underground continuous wall

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104895049A (en) * 2015-05-27 2015-09-09 广西交通科学研究院 Prefabrication-cast-in-situ mixed underground continuous wall and construction method thereof
CN110258526A (en) * 2019-05-28 2019-09-20 广州穗岩土木科技股份有限公司 The method of prefabricated diaphram wall and construct outer wall of basement and floor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104895049A (en) * 2015-05-27 2015-09-09 广西交通科学研究院 Prefabrication-cast-in-situ mixed underground continuous wall and construction method thereof
CN110258526A (en) * 2019-05-28 2019-09-20 广州穗岩土木科技股份有限公司 The method of prefabricated diaphram wall and construct outer wall of basement and floor

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