CN102995649B - Method for levelling inclination of open caisson in grading and layer-by-layer manner - Google Patents
Method for levelling inclination of open caisson in grading and layer-by-layer manner Download PDFInfo
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- CN102995649B CN102995649B CN201210511197.6A CN201210511197A CN102995649B CN 102995649 B CN102995649 B CN 102995649B CN 201210511197 A CN201210511197 A CN 201210511197A CN 102995649 B CN102995649 B CN 102995649B
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- open caisson
- caisson
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 54
- 239000010959 steel Substances 0.000 claims abstract description 54
- 239000002689 soil Substances 0.000 claims abstract description 16
- 239000004568 cement Substances 0.000 claims abstract description 7
- 239000002002 slurry Substances 0.000 claims abstract description 7
- 238000010276 construction Methods 0.000 claims description 11
- 238000009412 basement excavation Methods 0.000 claims description 6
- 230000009286 beneficial effect Effects 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
- Piles And Underground Anchors (AREA)
Abstract
本发明提供了一种逐层分级调平沉井倾斜的方法，它包括以下步骤：在沉井预下沉的地基中形成多个支撑桩孔；向多个支撑桩孔内注入水泥土浆；将多个预制钢结构桩分别插入至多个支撑桩孔中；预制第一段沉井，在第一段沉井的下部刃脚对应于所述多个钢结构桩的部位施工成平面；进行第一段沉井，直至第一段沉井底部落在多个钢结构桩上，调平沉井；拆除第一节钢结构桩，继续挖土、沉井，直至第一段沉井再次落在多个钢结构桩上，调平沉井；待第一段沉井按设计要求下沉预定深度后，在其上面浇筑第二段沉井；将钢结构桩逐节拆除，并在第二段沉井上面继续浇筑预定段数的沉井，直至沉井底端下沉至底部设计标高为止。采用本方法可减少沉井倾斜现象发生。
The invention provides a method for leveling the inclination of the caisson layer by layer, which comprises the following steps: forming a plurality of support pile holes in the pre-sinked foundation of the caisson; injecting cement soil slurry into the plurality of support pile holes; A plurality of prefabricated steel structural piles are respectively inserted into a plurality of supporting pile holes; the first caisson is prefabricated, and the lower blade feet of the first caisson are constructed into a plane corresponding to the positions of the plurality of steel structural piles; One section of caisson until the bottom of the first section of caisson falls on multiple steel structural piles, level the caisson; remove the first section of steel structural piles, continue digging and caisson until the first section of caisson falls on the ground again On multiple steel structure piles, level the caisson; after the first section of the caisson sinks to a predetermined depth according to the design requirements, pour the second section of the caisson on it; remove the steel structure piles section by section, and place the Continue pouring a predetermined number of caissons on the caisson until the bottom of the caisson sinks to the bottom design elevation. Adopting the method can reduce caisson inclination.
Description
Technical field
The invention belongs to building building technology field, relate in particular to the method that successively classification leveling open caisson tilts.
Background technology
Because of reasons such as the load asymmetric, open caisson periphery of the complexity of geological condition, excavation are different, open caisson, in sinking process, often occurs that open caisson tilts, and is difficult to correction, even affects normally carrying out and producing security incident of engineering.For the problem of well sinking run-off the straight, traditional method is the asymmetric excavation of employing, adopts the method for asymmetric preloading to rectify a deviation on open caisson top or outside open caisson, but is all after open caisson run-off the straight and the passive measure of taking.
The inventor once proposed Chinese invention patent for this problem and " prevented the pre-control method that open caisson tilts " (open day on August 12nd, 2009, publication number is CN101503879A), but the member more complicated that the method is used, brace summer and steel corbel etc. need to be set in well, and the inconvenience of cutting the earth, increase construction cost.
Summary of the invention
The technical problem to be solved in the present invention is: a kind of method that provides successively classification leveling open caisson to tilt, the method can make the probability of open caisson run-off the straight greatly reduce.
The present invention for solving the problems of the technologies described above taked technical scheme is:
The method that successively classification leveling open caisson tilts, is characterized in that, it comprises the following steps:
1) open caisson pre-sink ground in form multiple supporting piles hole, described multiple supporting piles hole is arranged in the circumferential projection that caisson wall center line forms;
2) in described multiple supporting piles hole, inject soil cement slurry;
3) multiple Prefabricated steel construction stakes are inserted into respectively in described multiple supporting pile hole that is injected with soil cement slurry, described Prefabricated steel construction stake is point to save that bolt connects or flange is formed by connecting;
4) prefabricated first paragraph open caisson, corresponding to described multiple steel structure piles and by dropping on the position of described multiple steel structure piles, is constructed into plane at the bottom of first paragraph open caisson sword pin, is beneficial to open caisson and can stably drops on described multiple steel structure pile;
5) reach after designing requirement until described first paragraph open caisson concrete strength, start to cut the earth, carry out first paragraph open caisson, until drop on described multiple steel structure pile leveling open caisson bottom first paragraph open caisson;
6) along first paragraph caisson wall below by the earthwork at described multiple steel structure piles position excavation desired depth downwards, synchronously remove first segment steel structure pile, continue to cut the earth, open caisson, until first paragraph open caisson drops on described multiple steel structure pile again, leveling open caisson;
7), after first paragraph open caisson is by designing requirement sinking desired depth, continue in the above to build second segment open caisson;
8) continuous repeating step 6) and 7), steel structure pile is removed section by section, and on second segment open caisson, continued to build the open caisson of predetermined N section, until open caisson bottom sinks down into bottom design absolute altitude.
In such scheme, described multiple steel structure piles uniformly-spaced evenly arrange, and the hoop spacing distance between every two adjacent steel structure piles is 3 m ~ 15m.
In such scheme, described multiple steel structure piles are greater than the spacing at the position soft at soil in the spacing at the hard position of soil, and the hoop spacing distance between every two adjacent steel structure piles is 3 m ~ 15m.
In such scheme, the degree of depth of the downward excavation in described step 6) is 0.3 m ~ 3m.
In such scheme, the method that forms multiple supporting piles hole in described step 1) is boring, hammering pore-forming, hole making by vibration or static pressure pore-forming.
Beneficial effect of the present invention for: because multiple supporting piles hole is arranged in the circumferential projection that caisson wall center line forms; And the top of the Prefabricated steel construction stake in supporting pile hole is positioned at same absolute altitude, when each open caisson, open caisson all can drop on respectively top and is positioned in the Prefabricated steel construction stake of same absolute altitude, therefore every section of open caisson has all carried out leveling by steel structure pile, the accumulative total of having avoided open caisson to tilt.Prefabricated steel construction stake is embedded in cement-soil, because the intensity of cement-soil is far below concrete, is convenient to the dismounting of steel structure pile; Each joint steel structure pile adopts bolt or flange to connect simultaneously, convenient and swift can make to remove every joint steel structure pile time, and the steel structure pile after simultaneously removing can be reused.And with respect to the patent before the inventor, structure of the present invention is simpler, flat slab capital construction in well, in well, shoveling is more convenient, cost is lower.
Brief description of the drawings
The process schematic diagram of the successively classification leveling open caisson method of tilting that Fig. 1 to Fig. 9 provides for the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described, and certain following embodiment should not be construed as limitation of the present invention.
A kind of method that the present embodiment provides successively classification leveling open caisson to tilt, it comprises the following steps:
The first step:
As depicted in figs. 1 and 2, in the ground 4 of the pre-sinking of open caisson, form multiple supporting piles hole 1.The plurality of supporting pile hole 1 is arranged in the circumferential projection 3 that caisson wall center line forms.The plurality of supporting pile hole 1 uniformly-spaced evenly arranges.Hoop spacing distance between every two adjacent supporting pile holes 1 is 3 m ~ 15m.Be understandable that, the plurality of supporting pile hole 1 also can arrange in unequal interval mode, is greater than the spacing at the position soft at soil in the spacing at the hard position of soil.In the present embodiment, the quantity in supporting pile hole 1 is eight, and it is not limited to eight in the present embodiment, can determine according to the diameter of open caisson and soil property situation.The hole forming method in this supporting pile hole 1 can adopt pore-forming equipment pore-forming, as boring, hammering pore-forming, hole making by vibration or static pressure pore-forming etc.
Second step:
To described multiple supporting piles hole 1 interior injection soil cement slurry.
The 3rd step:
As shown in Figure 2, multiple Prefabricated steel construction stakes 2 are inserted into respectively in multiple supporting pile holes 1 that are injected with soil cement slurry.In the present embodiment, as shown in Figure 3, Prefabricated steel construction stake is that merogenesis flange 5 is formed by connecting (in Fig. 3, only illustrated two joints), and it can also connect with bolt.
The 4th step:
As shown in Figure 4, prefabricated first paragraph open caisson 6, corresponding to multiple steel structure piles 2 and will drop on the position of multiple steel structure piles 2, is constructed into plane 7 at the bottom of first paragraph open caisson 6 sword pin, is beneficial to open caisson and can stably drops on multiple steel structure piles 2.
The 5th step:
As shown in Figure 5 and Figure 6, reach after designing requirement until first paragraph open caisson concrete strength, start to cut the earth, first paragraph open caisson 6 is carried out to open caisson, until the bottom of first paragraph open caisson 6 is dropped on eight steel structure piles 2 (as shown in Figure 6), because the top of eight steel structure piles 2 is positioned at same absolute altitude, therefore can leveling open caisson.
The 6th step:
As shown in Figure 7 and Figure 8, along first paragraph open caisson 6 borehole wall belows, the earthwork at multiple steel structure piles position is excavated to desired depth downwards, as 0.3 m ~ 3m, the synchronous first segment steel structure pile 2 connecting with flange of removing, then continue shoveling, open caisson, until first paragraph open caisson 6 drops on steel structure pile 2 again, leveling open caisson.
The 7th step:
As shown in Figure 9, after first paragraph open caisson 6 is by designing requirement sinking desired depth, continue in the above to build second segment open caisson 8.
The 8th step:
Repeat the 6th step and the 7th step, steel structure pile is removed section by section, and on second segment open caisson, continue to build predetermined N section open caisson, until open caisson bottom sinks down into bottom design absolute altitude.
It should be noted that, those of ordinary skill in the art should be appreciated that and can modify or be equal to replacement technical scheme of the present invention, and do not depart from aim and the scope of technical solution of the present invention, and it all should be encompassed in the middle of claim scope of the present invention.
Claims (5)
1. the method that successively classification leveling open caisson tilts, is characterized in that, it comprises the following steps:
1) open caisson pre-sink ground in form multiple supporting piles hole, described multiple supporting piles hole is arranged in the circumferential projection that caisson wall center line forms;
2) in described multiple supporting piles hole, inject soil cement slurry;
3) multiple Prefabricated steel construction stakes are inserted into respectively in described multiple supporting pile hole that is injected with soil cement slurry, described Prefabricated steel construction stake is point to save that bolt connects or flange is formed by connecting;
4) prefabricated first paragraph open caisson, corresponding to described multiple steel structure piles and by dropping on the position of described multiple steel structure piles, is constructed into plane at the bottom of first paragraph open caisson sword pin, is beneficial to open caisson and can stably drops on described multiple steel structure pile;
5) reach after designing requirement until described first paragraph open caisson concrete strength, start to cut the earth, first paragraph open caisson is carried out to open caisson, until drop on described multiple steel structure pile leveling open caisson bottom first paragraph open caisson;
6) along first paragraph caisson wall below by the earthwork at described multiple steel structure piles position excavation desired depth downwards, synchronously remove first segment steel structure pile, continue to cut the earth, open caisson, until first paragraph open caisson drops on described multiple steel structure pile again, leveling open caisson;
7), after first paragraph open caisson is by designing requirement sinking desired depth, continue in the above to build second segment open caisson;
8) continuous repeating step 6) and 7), steel structure pile is removed section by section, and on second segment open caisson, continued to build the open caisson of predetermined N section, until open caisson bottom sinks down into bottom design absolute altitude.
2. the method that successively classification leveling open caisson as claimed in claim 1 tilts, is characterized in that, described multiple steel structure piles uniformly-spaced evenly arrange, and the hoop spacing distance between every two adjacent steel structure piles is 3 m ~ 15m.
3. the method that successively classification leveling open caisson as claimed in claim 1 tilts, it is characterized in that, described multiple steel structure pile is greater than the spacing at the position soft at soil in the spacing at the hard position of soil, the hoop spacing distance between every two adjacent steel structure piles is 3 m ~ 15m.
4. the method that successively classification leveling open caisson as claimed in claim 1 tilts, is characterized in that, the degree of depth of the downward excavation in described step 6) is 0.3 m ~ 3m.
5. the method that successively classification leveling open caisson as claimed in claim 1 tilts, is characterized in that, the method that forms multiple supporting piles hole in described step 1) is boring, hammering pore-forming, hole making by vibration or static pressure pore-forming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210511197.6A CN102995649B (en) | 2012-12-04 | 2012-12-04 | Method for levelling inclination of open caisson in grading and layer-by-layer manner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210511197.6A CN102995649B (en) | 2012-12-04 | 2012-12-04 | Method for levelling inclination of open caisson in grading and layer-by-layer manner |
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| Publication Number | Publication Date |
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| CN102995649A CN102995649A (en) | 2013-03-27 |
| CN102995649B true CN102995649B (en) | 2014-11-12 |
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| CN201210511197.6A Expired - Fee Related CN102995649B (en) | 2012-12-04 | 2012-12-04 | Method for levelling inclination of open caisson in grading and layer-by-layer manner |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109024648B (en) * | 2016-12-13 | 2020-08-28 | 叶香竹 | Deviation rectifying construction method for open caisson |
| CN109680703A (en) * | 2018-12-26 | 2019-04-26 | 广州市第三市政工程有限公司 | Soft Soil Layer open caisson construction method |
| CN113026816B (en) * | 2021-03-24 | 2023-10-24 | 山东建筑大学 | Underpinning reverse-acting open caisson supporting structure for grouting reinforcement soil body and construction method |
| CN119877581A (en) * | 2025-03-26 | 2025-04-25 | 泰州名匠工程项目管理有限公司 | Open caisson structure with preset sinking channel and construction method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101503879A (en) * | 2009-03-10 | 2009-08-12 | 中国第一冶金建设有限责任公司 | Pre-control method for preventing inclination of sinking well |
| CN201292533Y (en) * | 2008-08-25 | 2009-08-19 | 中铁大桥局股份有限公司 | Composite type casing box cofferdam |
| CN101509258A (en) * | 2009-03-10 | 2009-08-19 | 中国第一冶金建设有限责任公司 | Method for precontrolling subsidence slant of sinking well |
| CN101608453A (en) * | 2009-07-06 | 2009-12-23 | 广州市第二市政工程有限公司 | The process of rectifying deviation of open caisson by jacking balance of jack |
| KR101134025B1 (en) * | 2009-12-22 | 2012-04-05 | 한신공영 주식회사 | Method for constructing a foundation using a open caisson |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1121909A (en) * | 1997-06-30 | 1999-01-26 | Taisei Corp | Full swivel caisson and how to set it down |
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2012
- 2012-12-04 CN CN201210511197.6A patent/CN102995649B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201292533Y (en) * | 2008-08-25 | 2009-08-19 | 中铁大桥局股份有限公司 | Composite type casing box cofferdam |
| CN101503879A (en) * | 2009-03-10 | 2009-08-12 | 中国第一冶金建设有限责任公司 | Pre-control method for preventing inclination of sinking well |
| CN101509258A (en) * | 2009-03-10 | 2009-08-19 | 中国第一冶金建设有限责任公司 | Method for precontrolling subsidence slant of sinking well |
| CN101608453A (en) * | 2009-07-06 | 2009-12-23 | 广州市第二市政工程有限公司 | The process of rectifying deviation of open caisson by jacking balance of jack |
| KR101134025B1 (en) * | 2009-12-22 | 2012-04-05 | 한신공영 주식회사 | Method for constructing a foundation using a open caisson |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平11-21909A 1999.01.26 * |
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Granted publication date: 20141112 |