CN102776878A - Construction method for preventing diaphragm wall from streaming - Google Patents
Construction method for preventing diaphragm wall from streaming Download PDFInfo
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- CN102776878A CN102776878A CN201210292842XA CN201210292842A CN102776878A CN 102776878 A CN102776878 A CN 102776878A CN 201210292842X A CN201210292842X A CN 201210292842XA CN 201210292842 A CN201210292842 A CN 201210292842A CN 102776878 A CN102776878 A CN 102776878A
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Abstract
A construction method for preventing diaphragm wall from streaming comprises the following steps of: filling a plurality of sand bags behind an I-beam of a primary slot section, wherein the sand bags are small-volume normal woven bags filled with 1/3 volume of sand, bag mouths are tied firmly and the bags are paved, the sand in the bags are loose, and the bags are arranged behind the I-beam, and beaten and compacted by a steel box hammer so that the sand bags are filled behind the I-beam completely; repeating the operation till the whole process is finished; and taking out the filled sand bags when drilling during a secondary slot section. With the adoption of the method, the purpose of tight connection between the concrete of the secondary slot section and the I-beam joint in the diaphragm wall construction is achieved. The construction method has the characteristics of being convenient in construction and easy in operation, the streaming of concrete is avoided, the concrete of the secondary slot section is tightly combined with the I-beam joint, and the water leakage rate of the underground diaphragm wall is reduced.
Description
Technical field
This patent relates to a kind of ground-connecting-wall and prevents the job practices of streaming.
Background technology
The city underground deep foundation ditch is under complicated weak soil geological conditions, and space enclosing structure adopts ground-connecting-wall to add the inner supporting structure system more.The ground-connecting-wall joint style is adopted as the fore shaft union more and i iron connects first two.But in rich groundwater and the high zone of artesian water; The ground-connecting-wall joint style adopts the i iron joint more, and the i iron joint welds with reinforcing cage before install reinforcing cage, to the processing of i iron joint area; Great majority all adopt adapter plate now, and the shortcoming of this way construction is:
Generally all can backbreak when (1) grabbing groove, the width of grabbing groove is greater than design width, but the adapter plate width is general identical with groove section design width, can't block concrete fully and flow to the second stage of groove section;
(2) in the work progress, the adapter plate position width of need backbreaking.
If it is not in place that this is managed everywhere; First phase groove section " is streamed " when concreting to not constructing the second stage of groove fragment position; Brush wall device can't brush the foreign material in concrete that streams and the i iron joint totally when causing the second stage of groove section grooving; The concrete of the second stage of groove section is combined closely with the i iron joint, thereby cause ground-connecting-wall joint percolating water, bring hidden danger for follow-up construction quality and foundation ditch safety.
Summary of the invention
Its purpose of the present invention just is to provide a kind of ground-connecting-wall to prevent the job practices of streaming, thereby has solved the concrete and the compact problem of i iron joint of the second stage of groove section in the ground-connecting-wall construction.Have easy construction, easy-operating characteristics, and stopped concrete " streaming ", the concrete of the second stage of groove section is combined closely with the i iron joint, reduce the probability of diaphragm wall percolating water.Can be widely used among the diaphragm wall i iron joint construction technology.
The technical scheme that realizes above-mentioned purpose and take comprises that throw the back-up sand earth bag behind at the i iron of first phase groove section, said sandy soil bag is that little volume is common bag weaved; Adorn the sand of 1/3 volume, the sack colligation is firm, pave; The inside is loose shape, is invested in i iron back, rams closely knit with steel case hammer; Make it be filled in i iron back fully, repeat aforesaid operations, until whole completion; Carrying out the second stage of groove section when grabbing groove, the sandy soil bag that throwing is filled out with cubic metre of earth grab out jointly.
Compared with prior art the present invention has the following advantages.
Throw the construction technology of back-up sand earth bag behind owing to having adopted, thereby solved the concrete and the compact problem of i iron joint of the second stage of groove section in the ground-connecting-wall construction at the i iron of first phase groove section.Have easy construction, easy-operating characteristics, and stopped concrete " streaming ", the concrete of the second stage of groove section is combined closely with the i iron joint, reduce the probability of diaphragm wall percolating water.
Description of drawings
Below in conjunction with accompanying drawing the present invention is made further detailed description.
Fig. 1 is for throwing back-up sand earth bag position view among the present invention.
Fig. 2 is steel element structure schematic front view among the present invention.
Fig. 3 is the vertical view of Fig. 2.
Fig. 4 is the lateral view of Fig. 2.
The specific embodiment
Said job practices comprises, and is as shown in Figure 1, throws back-up sand earth bag 1 behind at the i iron 2 of first phase groove section, and said sandy soil bag 1 is that little volume is common bag weaved; Adorn the sand of 1/3 volume, the sack colligation is firm, pave; The inside is loose shape, is invested in i iron 2 back, rams closely knit with steel case hammer; Make it be filled in i iron back fully, repeat aforesaid operations, until whole completion; Carrying out the second stage of groove section when grabbing groove, the sandy soil bag that throwing is filled out takes out.
Said i iron is provided with the steel member, and like Fig. 2,3, shown in 4, wire rope and snap close are put in the overpunching of said steel member; Draw-in groove 4 is adopted in the bottom, this member is stuck on the i iron of reinforcing cage, is used to confirm to fill out the accurate position of sandbag, prevents that sandbag from inserting in the reinforcing cage 3; Ground-connecting-wall under water concrete build finish after, this steel member is hung out.
Embodiment
I iron in first phase groove section is thrown the back-up sand earth bag behind, utilizes cuboid steel case hammer to ram closely knit then.See that (Fig. 1) throws and fill out sandy soil bag position view.
Because the position that ground-connecting-wall top mark height generally at below ground, is thrown when filling out the sandy soil bag is difficult to control, therefore; Need processing one to have the i iron steel member of draw-in groove; Be connected on the i iron of ground-connecting-wall reinforcing cage 3,, put on wire rope and snap close in this member overpunching; Draw-in groove is adopted in the bottom, and this member is stuck on the reinforcing cage i iron.Ground-connecting-wall under water concrete build finish after, this i iron steel member is taken out.See (Fig. 2,3,4) i iron draw-in groove steel member.
The sandy soil bag adopts little volume common bag weaved, adorns the sand of 1/3 volume, and the sack colligation is firm, paves, and the inside is loose shape, is invested in i iron back.When throwing in for the first time about 2 meters of the degree of depth, ram closely knitly with the crane whereabouts of slinging, make it be filled in i iron back fully with cuboid steel case hammer.Repeat aforesaid operations, until whole completion.Carrying out the second stage of groove section when grabbing groove, the sandy soil bag that throwing is filled out with cubic metre of earth grab out jointly.
Claims (2)
1. the job practices that ground-connecting-wall prevents to stream is characterized in that, said job practices comprises, throws back-up sand earth bag (1) behind at the i iron (2) of first phase groove section; Said sandy soil bag is that little volume is common bag weaved, adorns the sand of 1/3 volume, and the sack colligation is firm, paves; The inside is loose shape, is invested in i iron (2) back, rams closely knit with steel case hammer; Make it be filled in i iron back fully, repeat aforesaid operations, until whole completion; Carrying out the second stage of groove section when grabbing groove, the sandy soil bag that throwing is filled out is grabbed out together with the earthwork.
2. a kind of ground-connecting-wall according to claim 1 prevents the job practices of streaming to it is characterized in that said i iron (2) is provided with the steel member that wire rope and snap close are put in the overpunching of said steel member; Draw-in groove (4) is adopted in the bottom, and this member is stuck on the i iron, is used to confirm to fill out the accurate position of sandbag, prevents that sandbag from inserting in the reinforcing cage; Ground-connecting-wall under water concrete build finish after, this steel member is hung out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210292842XA CN102776878A (en) | 2012-08-17 | 2012-08-17 | Construction method for preventing diaphragm wall from streaming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210292842XA CN102776878A (en) | 2012-08-17 | 2012-08-17 | Construction method for preventing diaphragm wall from streaming |
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| CN102776878A true CN102776878A (en) | 2012-11-14 |
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| CN201210292842XA Pending CN102776878A (en) | 2012-08-17 | 2012-08-17 | Construction method for preventing diaphragm wall from streaming |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103031854A (en) * | 2012-12-07 | 2013-04-10 | 广东省基础工程公司 | Method for reducing concrete diffusion of continuous wall |
| CN104790430A (en) * | 2015-04-13 | 2015-07-22 | 上海远方基础工程有限公司 | Underground diaphragm wall construction method |
| CN110258522A (en) * | 2019-06-26 | 2019-09-20 | 中国电建集团成都勘测设计研究院有限公司 | The closed ground-connecting-wall for protruding into basement rock encloses well construction |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07216872A (en) * | 1994-02-09 | 1995-08-15 | Kajima Corp | Horizontal reinforcement joint structure for underground continuous wall |
| CN101205717A (en) * | 2006-12-18 | 2008-06-25 | 上海华瀛建筑科技有限公司 | Ultra-deep underground continuous wall connector |
| CN101858090A (en) * | 2010-06-23 | 2010-10-13 | 天津深基工程有限公司 | Construction method for soft connection of diaphram wall rigid joints |
| CN102444144A (en) * | 2011-09-28 | 2012-05-09 | 广东省基础工程公司 | Device preventing concrete from streaming for I-shaped steel joint of diaphragm wall |
| CN102535519A (en) * | 2012-03-20 | 2012-07-04 | 广州中煤江南基础工程公司 | I-shaped steel joint structure for underground continuous wall and construction method for I-shaped steel joint structure |
-
2012
- 2012-08-17 CN CN201210292842XA patent/CN102776878A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07216872A (en) * | 1994-02-09 | 1995-08-15 | Kajima Corp | Horizontal reinforcement joint structure for underground continuous wall |
| CN101205717A (en) * | 2006-12-18 | 2008-06-25 | 上海华瀛建筑科技有限公司 | Ultra-deep underground continuous wall connector |
| CN101858090A (en) * | 2010-06-23 | 2010-10-13 | 天津深基工程有限公司 | Construction method for soft connection of diaphram wall rigid joints |
| CN102444144A (en) * | 2011-09-28 | 2012-05-09 | 广东省基础工程公司 | Device preventing concrete from streaming for I-shaped steel joint of diaphragm wall |
| CN102535519A (en) * | 2012-03-20 | 2012-07-04 | 广州中煤江南基础工程公司 | I-shaped steel joint structure for underground continuous wall and construction method for I-shaped steel joint structure |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103031854A (en) * | 2012-12-07 | 2013-04-10 | 广东省基础工程公司 | Method for reducing concrete diffusion of continuous wall |
| CN104790430A (en) * | 2015-04-13 | 2015-07-22 | 上海远方基础工程有限公司 | Underground diaphragm wall construction method |
| CN104790430B (en) * | 2015-04-13 | 2016-06-29 | 上海远方基础工程有限公司 | Construction method of underground continuous wall |
| CN110258522A (en) * | 2019-06-26 | 2019-09-20 | 中国电建集团成都勘测设计研究院有限公司 | The closed ground-connecting-wall for protruding into basement rock encloses well construction |
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Application publication date: 20121114 |