CN103806452B - Be close to the high slope rockmass structure of outer wall of underground structure - Google Patents
Be close to the high slope rockmass structure of outer wall of underground structure Download PDFInfo
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- CN103806452B CN103806452B CN201210460397.3A CN201210460397A CN103806452B CN 103806452 B CN103806452 B CN 103806452B CN 201210460397 A CN201210460397 A CN 201210460397A CN 103806452 B CN103806452 B CN 103806452B
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Abstract
The present invention relates to the technical field of slope retaining structure, disclose the high slope rockmass structure being close to outer wall of underground structure, comprise first row pile cutoff, between adjacent first row pile cutoff, indent section is set, around indent section periphery, be provided with second row pile cutoff, first row pile cutoff comprises many first soldier piles, second row pile cutoff comprises many second soldier piles, first soldier pile and the second soldier pile lower end are placed in Rock And Soil, upper end vertically upwards extends, and first row pile cutoff is arranged multiple tracks prestress anchorage cable, and indent section is provided with horizontal inner supporting structure.The combined retaining structure be made up of the second soldier pile and horizontal inner supporting structure, its distortion is little, resistance to overturning good, be equivalent to class fixed bearing, owing to being provided with indent section between adjacent first row pile cutoff, and be provided with horizontal inner supporting structure in indent section, enhance stability and the durability of supporting and protection structure, avoid supporting and protection structure even to destroy in the excessive horizontal movement of generation, thus also invariably descend malformation or destruction.
Description
Technical field
The present invention relates to the technical field of slope retaining structure, particularly relate to the high slope rockmass structure being close to outer wall of underground structure.
Background technology
In current construction, Mountainous Building gets more and more, and wherein, have a kind of special side slope being close to outer wall of underground structure to be called " foundation ditch type " side slope, it is during Underground Construction, plays pattern foundation pit supporting structure effect, and after Underground Construction, it plays high slope effect.
Conventional side slope is open, allows to produce certain distortion, and between the operating period, constructor is very convenient to its Maintenance and Repair work.But, for " foundation ditch type " side slope, after space backfill between underground structure and foundation pit walls, they during use then cannot Maintenance and Repair, and slope retaining structure does not allow to destroy, and can not produce excessive displacement, otherwise produce huge horizontal thrust by outer wall of underground structure, the lighter causes outer wall cracking, bulging and infiltration, causes impact to use; Severe one will cause outer wall of underground structure directly to damage, and even underground structure slab column produces and damages, and brings about great losses.
For highly shorter " foundation ditch type " side slope, foundation pit supporting construction is as temporary lining technical measures, and outer wall of underground structure doublely can do slope supporting structure, bears slope ground pressure.For highly higher " foundation ditch type " high slope, slope supporting structure and outer wall of underground structure then should be provided separately, and slope supporting structure bears whole slope ground pressure or residual pushing force, and slope supporting structure only allows small distortion occurs; If the space backfill between side slope and outer wall of underground structure, the soil pressure that outer wall of underground structure is born calculates by earth pressue at rest usually.
In prior art, for the supporting and protection structure that the high slope rockmass structure being close to outer wall of underground structure mainly adopts major diameter soldier pile to combine with high-tonnage prestressed cable.But, after pit backfill, prestress anchorage cable anchor head is imbedded in backfill, when after the water level rezime of underground, anchor head is then in moist working environment, if the water resistance of anchor head sealing off and covering anchorage body is poor, or sealing off and covering anchorage body contacts not tight with soldier pile, anchor cable steel strand can corrosion gradually, like this, is then difficult to ensure the permanently effective service behaviour of anchor cable; And time comparatively serious, prestress anchorage cable is entirely ineffective, the combined retaining structure of campshed and prestress anchorage cable then becomes cantilever retaining structure, the distortion of supporting and protection structure increases, the horizontal thrust that supporting and protection structure passes to outer wall of underground structure by backfill also increases, when this horizontal thrust is greater than the design thrust that outer wall of underground structure bears, can there is large deformation in underground structure, even destroy.
Summary of the invention
The object of the present invention is to provide the high slope rockmass structure being close to outer wall of underground structure, be intended to the combined retaining structure solving employing campshed of the prior art and prestress anchorage cable, anchor cable easily lost efficacy so that the phenomenon of underground structure generation large deformation or destruction.
The present invention realizes like this, be close to the high slope rockmass structure of outer wall of underground structure, comprise the first row pile cutoff that multistage is wire along outer wall of underground structure, the alternate setting of multiple described first row pile cutoff, the indent section embedded in described high slope is set between adjacent described first row pile cutoff, around described indent section periphery, be provided with the second row pile cutoff in wire, described first row pile cutoff comprises many alternate the first soldier piles arranged in wire, described second row pile cutoff comprises many alternate the second soldier piles arranged in wire, described first soldier pile and described second soldier pile lower end are placed in Rock And Soil, upper end vertically upwards extends, horizontal inner supporting structure is provided with in described indent section, the external corner place that the second row pile cutoff of described first row pile cutoff and described indent section dual-side is formed is provided with back of the body straining beam.
Compared with prior art, owing to being provided with indent section between adjacent first row pile cutoff, and be provided with horizontal inner supporting structure in indent section, like this, whole supporting and protection structure concave-convex surface is distributed, enhances stability and the durability of supporting and protection structure, avoid supporting and protection structure during Long-Time Service, produce excessive horizontal movement and even destroy, thus also invariably descend malformation, even destroy.
Accompanying drawing explanation
Fig. 1 is the cut-away illustration being close to the high slope rockmass structure of outer wall of underground structure that the embodiment of the present invention provides;
Fig. 2 is that A in Fig. 1 is to cut-away illustration;
Fig. 3 is that B in Fig. 1 is to cut-away illustration.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The invention provides the high slope rockmass structure being close to outer wall of underground structure, comprise the first row pile cutoff that multistage is wire along outer wall of underground structure, the alternate setting of multiple described first row pile cutoff, the indent section embedded in described high slope is set between adjacent described first row pile cutoff, around described indent section periphery, be provided with the second row pile cutoff in wire, described first row pile cutoff comprises many alternate the first soldier piles arranged in wire, described second row pile cutoff comprises many alternate the second soldier piles arranged in wire, described first soldier pile and described second soldier pile lower end are placed in Rock And Soil, upper end vertically upwards extends, horizontal inner supporting structure is provided with in described indent section.
In the present invention, supporting and protection structure is set to concaveconvex structure shape, indent section is provided with horizontal inner supporting structure and better plays a supporting role, and avoids supporting and protection structure to produce excessive distortion and even destroys, protection underground structure.
Below in conjunction with concrete accompanying drawing, realization of the present invention is described in detail.
As shown in Figures 1 to 3, be a preferred embodiment provided by the invention.
With reference to Fig. 1, high slope 3 supporting and protection structure 1 that the present embodiment provides is arranged on outer wall of underground structure 2 side, be close to outer wall of underground structure 2, it comprises multiple campshed section along the distribution of outer wall of underground structure 2 outer side edges wire, the plurality of campshed section distributes alternately, and between adjacent campshed section, being provided with the indent section 14 embedded in high slope 3, the periphery along indent section 14 is also provided with above-mentioned campshed section.
Above-mentioned campshed section comprises many and is wire and the soldier pile of alternate layout in row's shape, and soldier pile is vertical layout, and its lower end is plugged in Rock And Soil, and upper end upwards vertically extends.
Certainly, for the ease of describing, the campshed section of exterior wall 2 outer side edges is defined as first row pile cutoff, and soldier pile is wherein defined as the first soldier pile 11; Accordingly, the campshed section of indent section 14 periphery is defined as second row pile cutoff, and soldier pile is wherein defined as the second soldier pile 12.Certainly, its structure is similar, and the first soldier pile 11 and the second soldier pile 12 can be rectangular piles, also can be toroidals, and concrete setting is required to determine by practice of construction.
In order to better support the second soldier pile 12 in indent section 14, in indent section 14, be provided with inner supporting structure, this inner supporting structure comprises many horizontal shores 15, and each horizontal shore 15 is connected on the second soldier pile 12.
In above-mentioned supporting and protection structure 1, owing to being provided with indent section 14 between adjacent first row pile cutoff, like this, make whole supporting and protection structure 1 in concavo-convex alternate shape, and in indent section 14, be provided with the inner supporting structure of horizontal distribution, like this, the inner supporting structure of indent section 14 forms a class fixed bearing, enhances the resistance to overturning of supporting and protection structure 1, avoids supporting and protection structure 1 produce excessive distortion or destroy, thus underground structure also can not be caused to produce excessive distortion, even destroy.
Along the vertical direction of indent section 14, multiple-layer horizontal inner supporting structure can be laid.
In the present embodiment, the horizontal shore 15 of inner supporting structure can be can be also angle brace to support, according to actual conditions, can select concrete arrangement form.
The stake top of many second soldier piles 12 of second row pile cutoff is connected by hat beam 19.Horizontal shore 15 in above-mentioned can be connected to the stake top of the second soldier pile 12, and like this, horizontal shore 15 is connected on hat beam 19.The horizontal shore 15 of second row pile cutoff also can be arranged on the waist of the second soldier pile 12, is connected with many second soldier piles 12 by waist rail 18.
In order to reduce the span of horizontal shore 15, for longer horizontal shore 15, its medium position also can arrange column 16, and this column 16 is arranged in vertical, and upper end is connected on brace summer 15, and lower end extends in Rock And Soil.
First soldier pile 11 of above-mentioned first row pile cutoff is connected with anchor cable 17, and one end of anchor cable 17 is connected on the second soldier pile 11, and the other end extends in high slope 3 Rock And Soil.
Certainly, above-mentioned each first soldier pile 11 can be connected with multiple tracks anchor cable 17, and concrete quantity can be decided according to the actual requirements.
In the present embodiment, the external corner place that the second row pile cutoff of first row pile cutoff and indent section 14 dual-side is formed is provided with carries on the back straining beam 13, the two ends of this back of the body straining beam 13 are connected on the first soldier pile 11 and the second soldier pile 12, like this, can ensure this better enabling capabilities in external corner place.
When after construction of underground structure completion, backfill is filled in first row pile cutoff and the space between second row pile cutoff and outer wall of underground structure.
The work progress of above-mentioned supporting and protection structure 1 is as follows:
1), smooth location, the first soldier pile 11, second soldier pile 12 and column 16 of constructing respectively, many first soldier piles 11 form first row pile cutoff, and many second soldier piles 12 form second row pile cutoff;
2), cut a hole stake top, excavation foundation trench, build an apical cap beam 19;
3), for first row pile cutoff: sequence of construction successively earth excavation, successively construct prestressed anchor 17, injecting cement paste maintenance to expire post tensioning locking, until design altitude at the bottom of soil excavation to foundation ditch routinely;
4), for indent section 14: after stake apical cap beam 19 is built or while stake apical cap beam 19 builds, build back of the body straining beam 13 and first floor horizontal shore 15; Successively soil excavation, successively builds horizontal shore 15 and waist rail 18; After Xia road horizontal shore 15 and Xia road waist rail 18 have been constructed, surplus earth at the bottom of beam retains, and no longer continues to dig deeply, and only the hole wall of contiguous outer wall of underground structure 2 side is by necessarily putting slope excavation, until design altitude at the bottom of soil excavation to foundation ditch from steady ratio of slope;
5), after underground structure civil engineering completes, the anchor head sealing off and covering anchorage body of the prestress anchorage cable 17 of first row pile cutoff is built; Space between underground structure and high slope 3 supporting and protection structure 1, backfills cohesive soil and compacting.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. be close to the high slope rockmass structure of outer wall of underground structure, it is characterized in that, comprise the first row pile cutoff that multistage is wire along outer wall of underground structure, the alternate setting of multiple described first row pile cutoff, the indent section embedded in described high slope is set between adjacent described first row pile cutoff, around described indent section periphery, be provided with the second row pile cutoff in wire, described first row pile cutoff comprises many alternate the first soldier piles arranged in wire, described second row pile cutoff comprises many alternate the second soldier piles arranged in wire, described first soldier pile and described second soldier pile lower end are placed in Rock And Soil, upper end vertically upwards extends, horizontal inner supporting structure is provided with in described indent section, the external corner place that the second row pile cutoff of described first row pile cutoff and described indent section dual-side is formed is provided with back of the body straining beam.
2. be close to the high slope rockmass structure of outer wall of underground structure as claimed in claim 1, it is characterized in that, along the vertical direction of described indent section, be alternately provided with horizontal inner supporting structure described in multilayer.
3. be close to the high slope rockmass structure of outer wall of underground structure as claimed in claim 1 or 2, it is characterized in that, described horizontal inner supporting structure comprises many brace summers, and the two ends of described brace summer are connected to described second soldier pile.
4. be close to the high slope rockmass structure of outer wall of underground structure as claimed in claim 3, it is characterized in that, the described many second soldier pile tops arranged in wire are provided with Guan Liang, and the two ends of described brace summer are connected to described Guan Liang.
5. be close to the high slope rockmass structure of outer wall of underground structure as claimed in claim 3, it is characterized in that, be provided with waist rail in the middle part of described many second soldier piles arranged in wire, the two ends of described brace summer are connected to described waist rail.
6. be close to the high slope rockmass structure of outer wall of underground structure as claimed in claim 3, it is characterized in that, be inserted with in described indent section in the vertical column extended, described column is connected in the middle part of described brace summer.
7. be close to the high slope rockmass structure of outer wall of underground structure as claimed in claim 1, it is characterized in that, described first row pile cutoff arranges multiple tracks prestress anchorage cable, and described anchor cable one end is connected to described first soldier pile, and the other end extends in the described high slope soil body.
8. be close to the high slope rockmass structure of outer wall of underground structure as claimed in claim 1, it is characterized in that, described back of the body straining beam two ends are connected to described first soldier pile and described second soldier pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210460397.3A CN103806452B (en) | 2012-11-15 | 2012-11-15 | Be close to the high slope rockmass structure of outer wall of underground structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210460397.3A CN103806452B (en) | 2012-11-15 | 2012-11-15 | Be close to the high slope rockmass structure of outer wall of underground structure |
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| Publication Number | Publication Date |
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| CN103806452A CN103806452A (en) | 2014-05-21 |
| CN103806452B true CN103806452B (en) | 2016-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210460397.3A Active CN103806452B (en) | 2012-11-15 | 2012-11-15 | Be close to the high slope rockmass structure of outer wall of underground structure |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104404971B (en) * | 2014-11-26 | 2016-05-18 | 重庆大学 | A kind of Anti-sliding stopping structure and high cut slope reinforcement construction method thereof |
| CN104532852A (en) * | 2014-12-23 | 2015-04-22 | 中国建筑西南勘察设计研究院有限公司 | Opposite-pull type prestressed pipe pile foundation pit supporting structure and mounting method thereof |
| CN108951668A (en) * | 2018-08-16 | 2018-12-07 | 重庆市地质矿产勘查开发局208水文地质工程地质队（重庆市地质灾害防治工程勘查设计院） | Combined prevention and control system for slope landslide caused by fill slope underground water |
| CN115217159B (en) * | 2022-09-01 | 2024-02-02 | 南京坤佳防水防腐保温工程有限公司 | Basement outer wall crack resistance structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88100236A (en) * | 1988-01-25 | 1988-10-19 | 北京市城区第四建筑工程公司 | Space structures slope protection pile (or board wall) |
| KR20120001204A (en) * | 2010-06-29 | 2012-01-04 | 코오롱건설주식회사 | Retaining method using two rows pile and connector of two rows pile for the same |
| CN203034466U (en) * | 2012-11-15 | 2013-07-03 | 深圳市工勘岩土工程有限公司 | High slope supporting structure closely attached to underground structure external wall |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6984092B1 (en) * | 2004-06-30 | 2006-01-10 | John Henry Meyer | Corner connection for temporary shoring |
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2012
- 2012-11-15 CN CN201210460397.3A patent/CN103806452B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88100236A (en) * | 1988-01-25 | 1988-10-19 | 北京市城区第四建筑工程公司 | Space structures slope protection pile (or board wall) |
| KR20120001204A (en) * | 2010-06-29 | 2012-01-04 | 코오롱건설주식회사 | Retaining method using two rows pile and connector of two rows pile for the same |
| CN203034466U (en) * | 2012-11-15 | 2013-07-03 | 深圳市工勘岩土工程有限公司 | High slope supporting structure closely attached to underground structure external wall |
Non-Patent Citations (2)
| Title |
|---|
| 《排桩结合混凝土梁内支撑的基坑支护设计》;姚伯坤;《甘肃科技》;20070331;145-148 * |
| 《采用排桩和混凝土内支撑体系的深基坑支护技术》;张海波等;《建筑技术》;20090228;105-109 * |
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| CN103806452A (en) | 2014-05-21 |
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Address after: 1501, Botai gongkan building, 8 Keji South 8th Road, high tech community, Yuehai street, Nanshan District, Shenzhen, Guangdong 518000 Patentee after: SHENZHEN GONGKAN GEOTECHNICAL GROUP Co.,Ltd. Address before: 518026 floors 20-22, middle building, Fujing building, Fuzhong Road, Futian District, Shenzhen, Guangdong Province Patentee before: SHENZHEN GONGKAN GEOTECHNICAL ENGINEERING Co.,Ltd. |