CN101886402B - Diaphragm wall seam waterproof method and diaphragm wall construction method based on same - Google Patents
Diaphragm wall seam waterproof method and diaphragm wall construction method based on same Download PDFInfo
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- CN101886402B CN101886402B CN2010102284762A CN201010228476A CN101886402B CN 101886402 B CN101886402 B CN 101886402B CN 2010102284762 A CN2010102284762 A CN 2010102284762A CN 201010228476 A CN201010228476 A CN 201010228476A CN 101886402 B CN101886402 B CN 101886402B
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Abstract
The invention belongs to the technical field of diaphragm wall construction, in particular relates to a diaphragm wall seam waterproof method and a diaphragm wall construction method based on the same, and solves the problem that the conventional seam waterproof method easily causes an engineering accident. The diaphragm wall construction seam waterproof method comprises the following steps of: 1) binding a reinforcement cage, wherein one end face of the reinforcement cage is a concave circular arc surface and the other end face of the reinforcement cage is a convex circular arc surface, and the radius of the concave and convex circular arc surfaces is consistent with that of a joint pipe; and 2) welding iron sheet protective surfaces with the same shape on the concave and convex circular arc surfaces, and welding waterproof plates on inner and outer side surfaces of the reinforcement cage at the end of the concave circular arc surface, wherein the length of the outer side surface waterproof plate beyond the reinforcement cage is greater than that of the inner side surface waterproof plate beyond the reinforcement cage. The diaphragm wall seam waterproof method has the advantages that: the joint waterproof problem is radically solved; the economic effect is obvious; and the pulling of the joint pipe is not limited by time any more and substantially has no disturbance and damage to the diaphragm wall, so the construction quality of the diaphragm wall is guaranteed.
Description
Technical field
The invention belongs to the technical field of construction of diaphragm wall in rich water area deep big foundation pit excavation or the subway station process of construction, be specifically related to a kind of diaphragm wall seam waterproof method and reach based on its construction method of underground continuous wall of finishing.
Background technology
The seam waterproof technology mainly contains in the existing construction of diaphragm wall process:
1. the seam waterproof technology of junction block mode.This is a kind of underground continuous wall connector method for waterproofing commonly used at present, promptly, after continuous wall trench underground, before the concreting, junction block is placed at groove section two ends, and reinforcing cage below the junction block centre waters then and builds up diaphragm wall, after treating that the diaphragm wall concrete reaches initial set, extract junction block.This connector processing method process is simple, and joint is the globality that circular arc type helps diaphragm wall, and the butt joint waterproof has certain effect.But the construction of the joint of this mode is difficult to rising of grasp junction block on opportunity, rises too early, concrete strength is not enough, produces the drawing crack crack, rises crossing late concrete strength too high, not only play a junction block difficulty, and rise to pull out and be easy in the process moulding body of wall is produced hard defects.So often leaking in the later stage Excavation Process, the junction block method emit sand to cause engineering accident.
2. the stake of prefabricated " worker " word joint.This also is one of present construction of diaphragm wall joint processing mode commonly used, be after the grooving, (intermediate only need be placed an end and get final product) is inserted into prefabricated in advance I shape preformed pile below the diaphragm wall at groove section two ends, and it is fixing with timber wedge etc., and then between two I shape preformed piles groove section install reinforcing cage, fluid concrete becomes wall again, and the I shape preformed pile does not recur and pulls out, and it is as the part of permanent structure.Pull out the joint stake though this kind method need not rise, have constuction joint all the time between preformed pile and cast-in-situ concrete diaphragm wall, from then on the later stage excavation of foundation pit is easy to that the constuction joint place emits water to emit sand, causes engineering accident.
More than after the construction of diaphragm wall that forms of two kinds of methods finishes, all to do one deck waterproofing work with grouting modes such as high-pressure rotary-sprays, particularly the joint in the outside.
Summary of the invention
The present invention is in order to solve the problem that existing diaphragm wall construction seam waterproof method easily causes engineering accident, and junction block method difficulty of construction is big, easily the moulding body of wall is produced hard defects, often leaks in the later stage Excavation Process and emits sand to cause engineering accident; All the time have constuction joint between prefabricated " worker " word joint piling method preformed pile and cast-in-situ concrete diaphragm wall, the later stage excavation of foundation pit emits water to emit sand from constuction joint easily, causes engineering accident; Provide a kind of diaphragm wall seam waterproof method to reach based on its construction method of underground continuous wall of finishing.
The present invention adopts following technical scheme to realize:
A kind of diaphragm wall construction seam waterproof method, step is as follows:
1), the assembling reinforcement cage, both ends of the surface one end of reinforcing cage is the concavity arc surface, the other end is the convex arc surface, the radius of concavity arc surface and convex arc surface is consistent with the junction block radius;
2), on concavity arc surface and convex arc surface, all weld the iron sheet mask of similar shape, the reinforcing cage medial surface and the lateral surface of concavity arc surface one end all are welded with splash guard, and the length that the lateral surface splash guard exceeds reinforcing cage exceeds the length of reinforcing cage greater than the medial surface splash guard.
Construction method of underground continuous wall is finished based on above-mentioned diaphragm wall seam waterproof method, and step is as follows:
1), treats continuous wall trench underground, put into single face spill connector post fore shaft in the groove section of convex shaped arc face correspondence when placing reinforcing cage in the design, the reinforcing cage that first colligation in advance is good is put into the groove section of having excavated according to concavo-convex relative mode, one of spill arc surface is sidelong into the junction block fore shaft, and the outside of medial surface splash guard and lateral surface splash guard all snaps in the steel plate card;
2), fluid concrete becomes a slice diaphragm wall, i.e. first width of cloth diaphragm wall;
3), then excavate the groove section of second width of cloth diaphragm wall, treat that concrete reaches the junction block of extracting first width of cloth diaphragm wall after the requirement of strength;
4) after, the groove section of second width of cloth diaphragm wall excavation is finished, second good reinforcing cage of colligation in advance put into the groove section of having excavated according to concavo-convex relative mode, the convex shaped arc of second reinforcing cage is in the face of the spill arc surface of first reinforcing cage, one of the second reinforcing cage spill arc surface is sidelong into the junction block fore shaft, and the outside of medial surface splash guard and lateral surface splash guard all snaps in the steel plate card;
5), fluid concrete becomes second width of cloth diaphragm wall;
6), repeat as the 3rd), 4), 5) step in step, go down successively, before the reinforcing cage for the treatment of last a slice diaphragm wall is put into, pull out the single face spill connector post of previous insertion, fluid concrete is finished whole construction of continuous concrete wall.
The present invention mainly is the design and construction of handling at the diaphragm wall seam waterproof, the present invention is at the inside and outside welding steel of reinforcing bar one side (initial time be both sides), and the overhanging certain-length of steel plate is used for seam waterproof, concave-convex circular arc side is made at the reinforcing cage two ends, and at concave-convex side iron sheet mask, the globality between diaphragm wall sheet and the sheet is mainly strengthened in the concave-convex side, have the effect of curved surface seam waterproof in addition concurrently, the end iron sheet mainly plays the effect of the diaphragm wall of isolating joint pipe and cast.With reach the joint good integrity, waterproof effect is good and the easy-operating purpose of easy construction.
The relative prior art of the present invention has following beneficial effect: the side joint form of using concavo-convex form has strengthened the bonding strength and the globality of diaphragm wall greatly, and the concavo-convex joint form that interlocks can also play waterproof effect simultaneously; In the waterproof steel plate in the outside can be wrapped in whole joint area in the reinforcing cage, the waterproof steel plate outside has concrete cover again, the joint waterproofing problem is completely resolved, the reinforcement waterproofing work that the joint outside need not be carried out measures such as high-pressure rotary-spray again between diaphragm wall two width of cloth, economic benefit is very remarkable; The two ends of every width of cloth diaphragm wall all have iron sheet that reinforcing cage and junction block are isolated, behind the concreting, junction block does not directly contact with concrete, rises to pull out junction block and be not subjected to the restriction of time, underground diaphragm wall substantially without any disturbance and destruction, is guaranteed the construction of continuous concrete wall quality.The present invention, activities is simple to operation, and the benefit effect is very remarkable, under the overall background of foundation pit construction at present like a raging fire, great promotional value and economic benefit is arranged.
Description of drawings
Fig. 1 is two ends concave-convex reinforcing cage schematic diagrames
Fig. 2 is the reinforcing cage schematic diagram that iron sheet mask and splash guard are set
Fig. 3 is the schematic diagram of the good groove section one side chain mouth of excavation
Fig. 4 is the schematic diagram of install reinforcing cage and two ends fore shaft
Fig. 5 builds the schematic diagram of finishing for adjacent mutually secondary diaphragm wall
Among the figure: the 1-reinforcing cage, 2-iron sheet mask, 3-medial surface splash guard, 4-lateral surface splash guard, 5-does not excavate the soil body, and 6-leads wall, the groove section that 7-has excavated, 8-single face spill connector post, 9-junction block, 10-steel plate card.
The specific embodiment
In conjunction with the accompanying drawings the specific embodiment of the present invention is described further.
Diaphragm wall construction seam waterproof method, step is as follows:
1), assembling reinforcement cage 1, both ends of the surface one end of reinforcing cage 1 is the concavity arc surface, the other end is the convex arc surface, the radius of concavity arc surface and convex arc surface is consistent with junction block 9 radiuses, as shown in Figure 1;
2), on concavity arc surface and convex arc surface, all weld the iron sheet mask 2 of similar shape, prevent that junction block from directly contacting with fluid concrete, junction block rise the time unrestricted.Reinforcing cage 1 medial surface and the lateral surface of concavity arc surface one end all are welded with splash guard, the length that lateral surface splash guard 4 exceeds reinforcing cage 1 exceeds the length of reinforcing cage 1 greater than medial surface splash guard 3, at least the 10cm that staggers forms effective bad break face waterproofing course, as shown in Figure 2.
Based on the construction method of underground continuous wall that above-mentioned diaphragm wall seam waterproof method is finished, step is as follows:
1), treats continuous wall trench underground, put into single face spill connector post 8 fore shafts of making in advance in the groove section of convex shaped arc face correspondence when placing reinforcing cage in the design, the groove section of spill arc surface correspondence is not put earlier junction block (as shown in Figure 3) when placing reinforcing cage in the design.The reinforcing cage that first colligation in advance is good is put into the groove section of having excavated 7 according to concavo-convex relative mode, one of spill arc surface is sidelong into junction block 9 fore shafts, the outside of medial surface splash guard 3 and lateral surface splash guard 4 all snaps in steel plate card 10, and the thickness of steel plate generally selects 40mm, as shown in Figure 4.
2), fluid concrete becomes a slice diaphragm wall, i.e. first width of cloth diaphragm wall;
3), then excavate the groove section of second width of cloth diaphragm wall, treat that concrete reaches the junction block of extracting first width of cloth diaphragm wall after the requirement of strength; This moment, junction block and concrete were isolated, and rose and pulled out opportunity without limits, needed last rising to pull out with operation, made that the intensity of diaphragm wall is maximum, best in quality as far as possible.
4) after, the groove section of second width of cloth diaphragm wall excavation is finished, second good reinforcing cage of colligation in advance put into the groove section of having excavated according to concavo-convex relative mode, the convex shaped arc of second reinforcing cage is in the face of the spill arc surface of first reinforcing cage, one of the second reinforcing cage spill arc surface is sidelong into junction block 9 fore shafts, the outside of medial surface splash guard 3 and lateral surface splash guard 4 all snaps in steel plate card 10, as shown in Figure 5.
5), fluid concrete becomes second width of cloth diaphragm wall;
6), repeat as the 3rd), 4), 5) step in step, go down successively, before the reinforcing cage for the treatment of last a slice diaphragm wall is put into, pull out the single face spill connector post of previous insertion, fluid concrete is finished whole construction of continuous concrete wall.
Claims (2)
1. diaphragm wall construction seam waterproof method is characterized in that step is as follows:
1), assembling reinforcement cage (1), both ends of the surface one end of reinforcing cage (1) is the concavity arc surface, the other end is the convex arc surface, the radius of concavity arc surface and convex arc surface is consistent with junction block (9) radius;
2), on concavity arc surface and convex arc surface, all weld the iron sheet mask (2) of similar shape, reinforcing cage (1) medial surface and the lateral surface of concavity arc surface one end all are welded with splash guard, and the length that lateral surface splash guard (4) exceeds reinforcing cage (1) exceeds the length of reinforcing cage (1) greater than medial surface splash guard (3).
2. a construction method of underground continuous wall is finished based on diaphragm wall seam waterproof method as claimed in claim 1, it is characterized in that step is as follows:
1), treats continuous wall trench underground, put into single face spill connector post (8) fore shaft in the groove section of convex shaped arc face correspondence when placing reinforcing cage in the design, the reinforcing cage that first colligation in advance is good is put into the groove section of having excavated (7) according to concavo-convex relative mode, one of spill arc surface is sidelong into junction block (9) fore shaft, and the outside of medial surface splash guard (3) and lateral surface splash guard (4) all snaps in steel plate card (10);
2), fluid concrete becomes a slice diaphragm wall, i.e. first width of cloth diaphragm wall;
3), then excavate the groove section of second width of cloth diaphragm wall, treat that concrete reaches the junction block of extracting first width of cloth diaphragm wall after the requirement of strength;
4) after, the groove section of second width of cloth diaphragm wall excavation is finished, second good reinforcing cage of colligation in advance put into the groove section of having excavated according to concavo-convex relative mode, the convex shaped arc of second reinforcing cage is in the face of the spill arc surface of first reinforcing cage, one of the second reinforcing cage spill arc surface is sidelong into junction block (9) fore shaft, and the outside of medial surface splash guard (3) and lateral surface splash guard (4) all snaps in steel plate card (10);
5), fluid concrete becomes second width of cloth diaphragm wall;
6), repeat as the 3rd), 4), 5) step in step, go down successively, before the reinforcing cage for the treatment of last a slice diaphragm wall is put into, pull out the single face spill connector post of previous insertion, fluid concrete is finished whole construction of continuous concrete wall.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102284762A CN101886402B (en) | 2010-07-13 | 2010-07-13 | Diaphragm wall seam waterproof method and diaphragm wall construction method based on same |
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| CN2010102284762A CN101886402B (en) | 2010-07-13 | 2010-07-13 | Diaphragm wall seam waterproof method and diaphragm wall construction method based on same |
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| CN101886402B true CN101886402B (en) | 2011-12-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080309A (en) * | 2019-05-15 | 2019-08-02 | 广州穗岩土木科技股份有限公司 | A kind of processing method of underground continuous wall connector waterproof |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102561389B (en) * | 2012-03-16 | 2014-02-19 | 广州中煤江南基础工程公司 | Construction method of underground diaphragm wall joint pipes |
| CN103276752A (en) * | 2013-06-20 | 2013-09-04 | 江苏城市职业学院 | Construction method of underground continuous wall expansive concrete joint |
| CN103758155B (en) * | 2014-01-16 | 2015-07-08 | 东南大学 | Underground diaphragm wall joint and construction method thereof |
| CN109403517A (en) * | 2018-10-09 | 2019-03-01 | 石家庄筑佳节能产品科技有限责任公司 | A kind of construction of plaster wall |
| CN112252301A (en) * | 2020-10-10 | 2021-01-22 | 无锡市市政设施建设工程有限公司 | Method for realizing underground continuous wall groove jumping construction based on BIM |
| CN113863283A (en) * | 2021-09-30 | 2021-12-31 | 中国建筑第八工程局有限公司 | Connecting structure of diaphragm wall and construction method thereof |
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| FR2542780A1 (en) * | 1983-03-18 | 1984-09-21 | Intrafor Cofor | Method and device for improving the joint between successive panels of a reinforced concrete wall cast in the ground |
| GB2264739A (en) * | 1992-03-06 | 1993-09-08 | Finic Bv | Diaphragm wall with liquid tight joints |
| CN2707833Y (en) * | 2004-06-03 | 2005-07-06 | 武汉京冶地基基础工程有限责任公司 | Watertight underground diaphragm wall with rigid joint |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3681314B2 (en) * | 2000-01-18 | 2005-08-10 | エス・バイ・エル株式会社 | Water stop device used for small-scale continuous wall construction |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2542780A1 (en) * | 1983-03-18 | 1984-09-21 | Intrafor Cofor | Method and device for improving the joint between successive panels of a reinforced concrete wall cast in the ground |
| GB2264739A (en) * | 1992-03-06 | 1993-09-08 | Finic Bv | Diaphragm wall with liquid tight joints |
| CN2707833Y (en) * | 2004-06-03 | 2005-07-06 | 武汉京冶地基基础工程有限责任公司 | Watertight underground diaphragm wall with rigid joint |
Non-Patent Citations (3)
| Title |
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| JP特开2001-200533A 2001.07.27 |
| 曾虹程等.超深大厚度圆形地下连续墙施工技术.《建筑施工》.2008,第30卷(第2期),95～97. * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080309A (en) * | 2019-05-15 | 2019-08-02 | 广州穗岩土木科技股份有限公司 | A kind of processing method of underground continuous wall connector waterproof |
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| CN101886402A (en) | 2010-11-17 |
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