CN102704501B - Ejection for water plugging cofferdam and construction method thereof - Google Patents
Ejection for water plugging cofferdam and construction method thereof Download PDFInfo
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- CN102704501B CN102704501B CN201210151525.6A CN201210151525A CN102704501B CN 102704501 B CN102704501 B CN 102704501B CN 201210151525 A CN201210151525 A CN 201210151525A CN 102704501 B CN102704501 B CN 102704501B
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- anchor tube
- steel anchor
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- reinforcing cage
- cofferdam
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Abstract
The invention discloses a kind of ejection for water plugging cofferdam, include steel anchor tube, described steel anchor tube inserts below riverbed line and forms anchorage part, the peripheral sheathed reinforcing cage of described steel anchor tube, film releasing stone or clay bag are filled out in the space of described steel anchor tube and reinforcing cage, described steel anchor tube top is provided with steel truss, and steel anchor tube is connected into an entirety by described steel truss.The construction method in ejection for water plugging cofferdam, first erection construction platform is holed, and installs steel anchor tube in hole, and with basement rock anchoring, then at the peripheral sheathed reinforcing cage of steel anchor tube, form fire dam; Steel anchor tube is connected into an entirety; Finally in the region that enclosing wall surrounds, fill out husky slip casting, form water stop cofferdam.Structure stress of the present invention is clear and definite, can form stable, closely knit water stop cofferdam, for follow-up excavation of foundation pit or other foundation constructions are provided convenience condition.
Description
Technical field
The present invention relates to technical field of bridge construction, particularly relate to a kind of ejection for water plugging cofferdam and construction method thereof.
Background technology
In existing bridge Construction Technology, the construction methods such as open caisson, steel cofferdam, reinforced concrete bi-flexural beam or steel sheet-pile cofferdam are generally taked in process for deep-water hole, but when meet rocky bed especially tilted stratum or other irregular scars time, cofferdam will be there is cannot to transfer smoothly or cannot the phenomenon that puts in place of inserted to play, thus be difficult to reach stagnant water effect, bring inconvenience can to follow-up work.
Summary of the invention
The technical problem to be solved in the present invention be to provide one can run into rocky bed especially tilted stratum or other irregular scars time, still can reach the ejection for water plugging cofferdam of stagnant water effect.
In order to solve the problems of the technologies described above, the invention provides a kind of ejection for water plugging cofferdam, include steel anchor tube, described steel anchor tube inserts below riverbed line and forms anchorage part, the peripheral sheathed reinforcing cage of described steel anchor tube, film releasing stone or clay bag are filled out in the space of described steel anchor tube and reinforcing cage, and described steel anchor tube top is provided with steel truss, and steel anchor tube is connected into an entirety by described steel truss.
Further, injected hole is offered on the anchorage part top of described steel anchor tube.
Further, described reinforcing cage includes main muscle and stirrup, and the longitudinal direction of described reinforcing cage is evenly provided with reinforcing rib, and the top of described reinforcing cage is lower than the top of steel anchor tube, and adjacent described reinforcing cage fits tightly together.
Further, sheathed at least one steel anchor tube in described reinforcing cage.
Further, described steel truss adopts double-decker, is provided with steel pipe is connected by steel anchor tube in the corner of described steel truss.
The present invention also provides a kind of construction method of ejection for water plugging cofferdam,
Step one, sets up drilling machine construction platform, operation platform sets up rig, hole to desired zone;
Step 2, installs steel anchor tube in hole, slip casting in the injected hole of steel anchor tube and with basement rock anchoring;
Step 3, removes rig and operation platform, at the peripheral sheathed reinforcing cage of steel anchor tube, forms enclosing wall at the gap washer stone of steel anchor tube and reinforcing cage or clay bag;
Step 4, is connected to form steel truss by shaped steel steel anchor tube top, and is on the corner connected by steel anchor tube with steel pipe;
Step 5, fills out husky slip casting in the region that enclosing wall surrounds, and forms water stop cofferdam.
Further, described operation platform by twice longeron with together with crossbeam form, longitudinal and cross beam combines by beam truss, and connects into entirety by bracing frame.
The present invention can construct ejection for water plugging cofferdam on tilted stratum or other irregular scars, and good stagnant water effect can be reached, and work progress of the present invention is not by the interference of other external condition, simple and easy to do, and each inter process can cross-operation, mitigation can be played to the comparatively nervous duration.Structure stress of the present invention is clear and definite, can form stable, closely knit water stop cofferdam, for follow-up excavation of foundation pit or other foundation constructions are provided convenience condition.
Accompanying drawing explanation
Fig. 1 is the general arrangement of ejection for water plugging cofferdam one of the present invention embodiment;
Fig. 2 is facade structures figure embodiment illustrated in fig. 1;
Fig. 3 is ejection for water plugging cofferdam construction platform schematic diagram of the present invention.
In figure, 1. steel anchor tube, 2. reinforcing cage, 3. clay bag, 4. steel truss, 5. fill out sand, 6. ballast, 7. anchor structure, 8. riverbed line, 9. operation platform, 10. rig, 11. bank lines, 12. steel pipes.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the invention will be further described, can better understand the present invention and can be implemented, but illustrated embodiment is not as a limitation of the invention to make those skilled in the art.
As depicted in figs. 1 and 2, for ejection for water plugging cofferdam one of the present invention embodiment, include steel anchor tube 1, described steel anchor tube 1 inserts riverbed line less than 8 and forms anchorage part, the sheathed reinforcing cage 2 in periphery of described steel anchor tube 1, described steel anchor tube 1 fills out film releasing stone or clay bag 3 with the space of reinforcing cage 2, and described steel anchor tube 1 top is provided with steel truss 4, and steel anchor tube 1 is connected into an entirety by described steel truss 4.
Offer injected hole on the anchorage part top of described steel anchor tube 1, by slip casting and basement rock anchoring, the arrangement principle of described steel anchor tube 1 is relevant to the depth of water, and arrange intensive at depth of water place, at water, shallow place then arranges sparse.
As shown in Figure 1, it is peripheral that described reinforcing cage 2 is sheathed on steel anchor tube 1, according to the situation that steel anchor tube is arranged, sheathed at least one steel anchor tube in reinforcing cage 2, one is arranged with in reinforcing cage 2 in the present embodiment, two or three steel anchor tubes 1, described reinforcing cage 2 includes main muscle, stirrup, the longitudinal direction of described reinforcing cage 2 is evenly provided with reinforcing rib, one Reinforced Hoop is established in the present embodiment every two meters, the top of described reinforcing cage 2 is lower than the top of steel anchor tube 1, reinforcing cage 2 is lower than steel anchor tube 1 top one meter, adjacent described reinforcing cage 2 fits tightly together, in case non-return back-up sand outbound flows.
What described steel truss 4 adopted is double-decker, the corner of described steel truss 4 is provided with steel pipe 12 and is connected by steel anchor tube 1.In the present embodiment, steel truss 4 is arranged in steel anchor tube 1 top, and the layer distance of two-layer steel truss 4 is 450 millimeters.
Its construction method in ejection for water plugging cofferdam, as shown in Figure 3, when bridge water stop cofferdam is constructed, first erection construction platform 9, operation platform 9 by twice longeron with together with crossbeam form, longitudinal and cross beam combines by beam truss, and connects into entirety by bracing frame.Longeron one end stretched on the water surface is cantilever position, and therefore opposite side must be fixed by the method for ballast 6 or anchor structure 7 and ground, thus ensures that longeron self is in stable state.
Operation platform 9 sets up rig 10, holes to desired zone, boring will reach several meters of riverbed line less than 8, and the concrete degree of depth of boring is by the conditional decision such as the depth of water, current.
In hole, bury steel anchor tube 1 underground, slip casting in steel anchor tube 1 and with basement rock anchoring; Then remove rig 10 and operation platform 9, at the outer sheathed reinforcing cage 2 of steel anchor tube 1, the gap washer stone of steel anchor tube 1 and reinforcing cage 2 or clay bag 3 etc. form enclosing wall; Be connected to form steel truss at steel anchor tube 1 top by shaped steel, and on the corner with steel pipe 12, steel anchor tube 1 connected, to increase overall stability.
Fill up by filling out husky 5 in the region that described enclosing wall and bank line 11 are formed jointly, then ejection for water plugging is carried out, what injected hole adopted is the hole that rig 10 is drilled to, and the spacing of position, hole is not more than two meters, and Grouting Pipe stretches in injected hole, grouting pressure controls within 0.2 MPa, carry out interval slip casting according to jumping hole mode, to prevent grout leaking, improve the intensity of slurries in injected hole, in time having grout phenomenon, slip casting should stop.After the slurry intensity in injected hole reaches standard, namely form water stop cofferdam that is stable, closely knit, sealing.
Over-water construction can have been changed over land construction by this invention, facilitates the carrying out of follow-up work, also improves the safety of integral construction.The present invention is not limited to the cofferdam construction on bank, waterborne when carrying out deep pit digging, also can adopt water stop cofferdam of the present invention, can reach stagnant water effect equally.
The above embodiment is only that protection scope of the present invention is not limited thereto in order to absolutely prove the preferred embodiment that the present invention lifts.The equivalent alternative or conversion that those skilled in the art do on basis of the present invention, all within protection scope of the present invention.Protection scope of the present invention is as the criterion with claims.
Claims (2)
1. an ejection for water plugging cofferdam, it is characterized in that, include steel anchor tube, described steel anchor tube inserts below riverbed line and forms anchorage part, injected hole is offered on the anchorage part top of described steel anchor tube, the peripheral sheathed reinforcing cage of described steel anchor tube, sheathed at least one steel anchor tube in described reinforcing cage, described reinforcing cage includes main muscle and stirrup, the longitudinal direction of described reinforcing cage arranges one reinforcing rib every two meters, the top of described reinforcing cage is lower than the top of steel anchor tube, adjacent described reinforcing cage fits tightly together, film releasing stone or clay bag are filled out in the space of described steel anchor tube and reinforcing cage, described steel anchor tube top is provided with and adopts double-deck steel truss, the layer distance of two-layer steel truss is 450 millimeters, steel anchor tube is connected into an entirety by described steel truss, be provided with steel pipe in the corner of described steel truss steel anchor tube is connected.
2. the construction method in ejection for water plugging cofferdam, is characterized in that,
Step one, sets up drilling machine construction platform, described operation platform by twice longeron with together with crossbeam form, longitudinal and cross beam combines by beam truss, and connects into entirety by bracing frame, and operation platform sets up rig, holes to desired zone;
Step 2, installs steel anchor tube in hole, slip casting in the injected hole of steel anchor tube and with basement rock anchoring;
Step 3, removes rig and operation platform, and at the peripheral sheathed reinforcing cage of steel anchor tube, described reinforcing cage arranges one reinforcing rib every two meters, forms enclosing wall at the gap washer stone of steel anchor tube and reinforcing cage or clay bag;
Step 4, is connected to form steel truss by shaped steel steel anchor tube top, and the layer distance of two-layer steel truss is 450 millimeters, and is on the corner connected by steel anchor tube with steel pipe;
Step 5, fills out husky slip casting in the region that enclosing wall surrounds, and forms water stop cofferdam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210151525.6A CN102704501B (en) | 2012-05-16 | 2012-05-16 | Ejection for water plugging cofferdam and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210151525.6A CN102704501B (en) | 2012-05-16 | 2012-05-16 | Ejection for water plugging cofferdam and construction method thereof |
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| Publication Number | Publication Date |
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| CN102704501A CN102704501A (en) | 2012-10-03 |
| CN102704501B true CN102704501B (en) | 2015-11-18 |
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| CN201210151525.6A Active CN102704501B (en) | 2012-05-16 | 2012-05-16 | Ejection for water plugging cofferdam and construction method thereof |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111706330A (en) * | 2020-06-30 | 2020-09-25 | 陕西陕煤韩城矿业有限公司 | Liquid injection method for three-soft coal seam inclined roadway coal uncovering and reinforcing coal body |
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| JP4009028B2 (en) * | 1998-12-25 | 2007-11-14 | 鹿島建設株式会社 | Deadline equipment and double deadline method used in double deadline method |
| CN101182717A (en) * | 2007-07-30 | 2008-05-21 | 中铁十八局集团有限公司 | Construction method of opening locked steel tube pilecofferdam |
| CN201132960Y (en) * | 2007-11-05 | 2008-10-15 | 上海勘测设计研究院 | Composite batardeau of steel light structure |
| JP4543359B2 (en) * | 2001-03-26 | 2010-09-15 | 東洋建設株式会社 | Box-type steel sheet pile for temporary cut-off method |
| CN202672165U (en) * | 2012-05-16 | 2013-01-16 | 中铁大桥局集团第二工程有限公司 | Grouting water-blocking cofferdam |
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2012
- 2012-05-16 CN CN201210151525.6A patent/CN102704501B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4009028B2 (en) * | 1998-12-25 | 2007-11-14 | 鹿島建設株式会社 | Deadline equipment and double deadline method used in double deadline method |
| JP4543359B2 (en) * | 2001-03-26 | 2010-09-15 | 東洋建設株式会社 | Box-type steel sheet pile for temporary cut-off method |
| CN101182717A (en) * | 2007-07-30 | 2008-05-21 | 中铁十八局集团有限公司 | Construction method of opening locked steel tube pilecofferdam |
| CN201132960Y (en) * | 2007-11-05 | 2008-10-15 | 上海勘测设计研究院 | Composite batardeau of steel light structure |
| CN202672165U (en) * | 2012-05-16 | 2013-01-16 | 中铁大桥局集团第二工程有限公司 | Grouting water-blocking cofferdam |
Non-Patent Citations (1)
| Title |
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| 西江桥广州岸围堰设计与施工;翁金福、李奔琦;《城市建设理论研究》;20120515(第14期);正文2-5栏首行至末行，第3栏附图 * |
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| CN102704501A (en) | 2012-10-03 |
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