CN202323958U - Deep-water foundation pit support and water-stop self-locking supporting pile structure - Google Patents
Deep-water foundation pit support and water-stop self-locking supporting pile structure Download PDFInfo
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- CN202323958U CN202323958U CN 201120477846 CN201120477846U CN202323958U CN 202323958 U CN202323958 U CN 202323958U CN 201120477846 CN201120477846 CN 201120477846 CN 201120477846 U CN201120477846 U CN 201120477846U CN 202323958 U CN202323958 U CN 202323958U
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- concrete pile
- water
- reinforced concrete
- piles
- locking
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 239000004567 concrete Substances 0.000 claims abstract description 34
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 30
- 239000011435 rock Substances 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 14
- 239000000758 substrate Substances 0.000 claims description 7
- 238000010276 construction Methods 0.000 abstract description 13
- 238000009412 basement excavation Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000001976 improved effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model provides a deep-water foundation pit support and water-stop self-locking supporting pile structure, which comprises plain concrete piles, reinforced concrete piles and a locking ring beam. The plain concrete piles and the reinforced concrete piles are all bored cast-in-place piles, the reinforced concrete piles are vertical support beams, the plain concrete piles and the reinforced concrete piles are alternately nested on the periphery of a foundation pit, bottom ends of the piles are driven into foundation base bedrock, the locking ring beam is disposed at the top ends of the piles, horizontal restraint of the upon the pile bottom ends and the locking ring beam at the pile top ends enables the piles and the locking ring beam form a stable self-locking support and water-stop system. By means of the self-locking support pile structure, the problem of gradual construction of supports in foundation pit excavation is solved, a nested mass of the plain concrete piles and the reinforced concrete piles forms an airtight water-stop curtain, and the problem of water stop insufficiency of existing bored secant piles is solved thoroughly.
Description
Technical field
The utility model relates to the deep excavation project technical field, is specifically related to the self-locking fender post structure of a kind of deep water bracing of foundation pit and sealing.
Background technology
The two large problems that the excavation of special foundation ditch is mainly faced is: the stable and partition underground water of hole wall.And on great rivers, build all kinds of bridges, and for the foundation construction of building the island in some water, just be similar to the excavation of deep foundation ditch in the deep water, also be quite difficult construction link.
Although similar engineering uses fender post as pattern foundation pit supporting structure like the excavation of subway station usually.But for the excavation of foundation pit of building the island in the water is under the condition of deep water and circulating water, to carry out; If simply apply mechanically the space enclosing structure of subway station; Owing to receive the influence of support system not only can reduce work efficiency, and do not make full use of actual geological conditions, can cause certain waste.
When the subway station foundation ditch adopts rotary churning pile, boring interlock stake etc. to solve the excavation problem; The self-supporting effect of fender post is not generally considered in design; But in Excavation Process, fender post is provided with horizontal support layer by layer; These support the continuation operation that has a strong impact on the bottom again, and stagnant water effect is bad simultaneously.Some specially bad to bracing of foundation pit stake waterproof and compound water stop structure of design is in use executed and is done complicatedly, still can not reach desirable stagnant water effect fully.And owing to receive the influence of foundation depth and the restriction of foundation ditch base rock to be difficult to implement, also there is stable defect of bad in steel sheet pile supporting and protection structure commonly used even execute reluctantly.In addition, the job site of above prior art needs the special equipment support, and limitation is bigger.
The utility model content
The purpose of the utility model is to provide a kind of both safety economies, stagnant water effect good, and the job site is simple, the deep water bracing of foundation pit that need not special equipment and the self-locking fender post structure of sealing.
For realizing above-mentioned purpose, the technical scheme that the utility model is taked is:
The self-locking fender post structure of a kind of deep water bracing of foundation pit and sealing; It comprises plain concrete pile, reinforced concrete pile and fore shaft collar tie beam; Plain concrete pile and reinforced concrete pile all adopt bored pile; The reinforced concrete pile conduct is brace summer vertically, and replaces along the nested arrangement of foundation ditch periphery with plain concrete pile, the stake bottom entering substrate basement rock of plain concrete pile and reinforced concrete pile; Its top is provided with the fore shaft collar tie beam, and basement rock makes it to form a stable self-locking to the horizontal restraint of the horizontal restraint of stake bottom and stake top fore shaft collar tie beam and goes along with sb. to guard him and the sealing system.
The nested 5cm that is no less than between described reinforced concrete pile and plain concrete pile stake.
Described reinforced concrete pile and plain concrete pile are set the stake bottom must get into 1～1.5m below the substrate basement rock.
The self-locking fender post structure of above-mentioned deep water bracing of foundation pit that the utility model provides and sealing has taken into full account the concrete characteristics of job site, adopts reinforced concrete pile as vertical brace summer; And with plain concrete pile alternately along the nested arrangement of foundation ditch periphery, the stake bottom gets into the substrate basement rock, utilizes basement rock to the horizontal restraint of stake bottom and the horizontal restraint of stake top fore shaft collar tie beam; Making it to form a stable self-locking goes along with sb. to guard him and the sealing system; Not only guaranteed the stable of supporting, and reached the purpose of complete shutoff water, brought great convenience to construction; And when guaranteeing the subsequent job quality, reached the purpose of saving cost.Its beneficial effect is embodied in: 1. structural calculation is simple, distinct.2. economical and practical: construction equipment and construction manipulation process are simple, can many scope of operations construct simultaneously, and what need only is the precision that improves construction control.Through measuring and calculating, reduce approximately 15～20% than the subway station bracing of foundation pit cost of similar structures, speed improves 23%.Foundation depth during greater than 10 meters economic effect more obvious.3. safe and reliable: utilize basement rock to stake bottom and near coal-mine fore shaft collar tie beam to the horizontal restraint on stake top, formed a complete support system, guaranteed operating personnel's safety in the hole greatly, below the water surface, built the construction environment of a safety.4. the stake between the effective nested purpose that reaches abundant water shutoff.Even nested fall flat between the construction king-pile, cement also can produce improved effect to slit filler (mud skin) in the process of setting of pile concrete, also can reach the water blockoff purpose to improve its intensity.
Description of drawings
Fig. 1 is the nested arrangement sketch map with plain concrete pile of reinforced concrete pile
Fig. 2 is a stake top floor map
Fig. 3 is the profile of self-locking fender post structure.
The specific embodiment
Extremely shown in Figure 3 like Fig. 1; The self-locking fender post structure of deep water bracing of foundation pit that the utility model provides and sealing, it comprises plain concrete pile 1, reinforced concrete pile 2 and fore shaft collar tie beam 3, plain concrete pile 1 all adopts bored pile with reinforced concrete pile 2; Reinforced concrete pile 2 is as vertical brace summer; And with plain concrete pile 1 alternately along the nested arrangement of foundation ditch periphery, accurate setting-out all will be carried out in all piles position, the center off normal on plane is no more than 2cm.The stake bottom of plain concrete pile 1 and reinforced concrete pile 2 gets into substrate basement rock 4; Its top is provided with fore shaft collar tie beam 3, and the horizontal restraint of the horizontal restraint of 4 pairs of stake bottoms of basement rock and stake top fore shaft collar tie beam 3 makes it to form a stable self-locking and goes along with sb. to guard him and the sealing system.
According to the diameter of foundation ditch design size and reinforced concrete pile 2, the nested 5cm that is no less than between the depth of nesting between the stake footpath of the nested stake of rationally arranging and stake, 1 of reinforced concrete pile 2 and plain concrete pile.
According to geological section; Reinforced concrete pile 2 is set the stake bottom with plain concrete pile 1 must get into substrate basement rock 1～1.5m below 4 (the basement rock weathering slight person get the small value); Thereby make its fore shaft collar tie beam 3 form a complete self-locking support system, need not increase other support system with the stake top.
During construction, must carry out various design inspections and calculate, the result must satisfy the related specifications requirement.First construction plain concrete pile 1, and guarantee that its gradient surpasses 0.5%, the intensity of treating plain concrete pile 1 reach the design label 75% after, the construction reinforced bar concrete pile 2 again.Reinforced concrete pile 2 must guarantee during concrete perfusion that as vertical girder structure reinforcing cage does not float.The construction of reinforced concrete pile 2 makes 1 nested arrangement of reinforced concrete pile 2 and plain concrete pile by means of the guide effect of plain concrete pile 1.The concrete strength of fore shaft collar tie beam 3 reach design strength 70% after can begin the full-face tunneling of foundation ditch, execute again and make cushion cap 5.
This self-locking fender post structure has avoided executing step by step in the Excavation Process problem of doing support; The airtight water-stop curtain of the common formation of the nested body of plain concrete pile 1 and reinforced concrete pile 2; Thoroughly solved the problem that existing boring interlock stake does not reach abundant sealing, be about to bored pile and not only fully utilize as supporting and protection structure but also as water-stop curtain.
Claims (3)
1. the self-locking fender post structure of deep water bracing of foundation pit and sealing; It is characterized in that: it comprises plain concrete pile (1), reinforced concrete pile (2) and fore shaft collar tie beam (3); Plain concrete pile (1) and reinforced concrete pile (2) all adopt bored pile; Reinforced concrete pile (2) is as vertical brace summer; And with plain concrete pile (1) alternately along the nested arrangement of foundation ditch periphery; The stake bottom of plain concrete pile (1) and reinforced concrete pile (2) gets into substrate basement rock (4), and its top is provided with fore shaft collar tie beam (3), and basement rock (4) makes it to form a stable self-locking to the horizontal restraint of the horizontal restraint of stake bottom and stake top fore shaft collar tie beam (3) and goes along with sb. to guard him and the sealing system.
2. the self-locking fender post structure of deep water bracing of foundation pit according to claim 1 and sealing is characterized in that: the nested 5cm of being no less than between the stake of described reinforced concrete pile (2) and plain concrete pile (1).
3. the self-locking fender post structure of deep water bracing of foundation pit according to claim 1 and 2 and sealing is characterized in that: described plain concrete pile (1) and reinforced concrete pile (2) are set the stake bottom must get into 1～1.5m below the substrate basement rock (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120477846 CN202323958U (en) | 2011-11-27 | 2011-11-27 | Deep-water foundation pit support and water-stop self-locking supporting pile structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120477846 CN202323958U (en) | 2011-11-27 | 2011-11-27 | Deep-water foundation pit support and water-stop self-locking supporting pile structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202323958U true CN202323958U (en) | 2012-07-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120477846 Expired - Fee Related CN202323958U (en) | 2011-11-27 | 2011-11-27 | Deep-water foundation pit support and water-stop self-locking supporting pile structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202323958U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103726496A (en) * | 2013-12-27 | 2014-04-16 | 中铁大桥局集团第一工程有限公司 | Circular deep foundation pit bored secant pile wall supporting construction method |
| CN105089062A (en) * | 2015-08-17 | 2015-11-25 | 陕西桩鑫建设工程有限公司 | Engaged retaining pile and construction method and application thereof |
| CN105569666A (en) * | 2016-01-20 | 2016-05-11 | 铁道第三勘察设计院集团有限公司 | Stratum reinforcing method matched with shield long-distance tunneling normal-pressure tool changing |
| CN106567424A (en) * | 2016-10-28 | 2017-04-19 | 中国市政工程中南设计研究总院有限公司 | Design method of big-diameter well |
| CN108797641A (en) * | 2018-07-20 | 2018-11-13 | 中铁十八局集团有限公司 | A kind of structure and its construction method of Underground Subway Station construction period full station sealing |
| CN109853556A (en) * | 2019-01-22 | 2019-06-07 | 华北有色工程勘察院有限公司 | The ultra-deep that can bear explosion influence adopts hole supporting and retaining system and its construction method |
-
2011
- 2011-11-27 CN CN 201120477846 patent/CN202323958U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103726496A (en) * | 2013-12-27 | 2014-04-16 | 中铁大桥局集团第一工程有限公司 | Circular deep foundation pit bored secant pile wall supporting construction method |
| CN105089062A (en) * | 2015-08-17 | 2015-11-25 | 陕西桩鑫建设工程有限公司 | Engaged retaining pile and construction method and application thereof |
| CN105089062B (en) * | 2015-08-17 | 2016-08-17 | 陕西桩鑫建设工程有限公司 | It is engaged lagging pile and construction method thereof and application |
| CN105569666A (en) * | 2016-01-20 | 2016-05-11 | 铁道第三勘察设计院集团有限公司 | Stratum reinforcing method matched with shield long-distance tunneling normal-pressure tool changing |
| CN106567424A (en) * | 2016-10-28 | 2017-04-19 | 中国市政工程中南设计研究总院有限公司 | Design method of big-diameter well |
| CN108797641A (en) * | 2018-07-20 | 2018-11-13 | 中铁十八局集团有限公司 | A kind of structure and its construction method of Underground Subway Station construction period full station sealing |
| CN109853556A (en) * | 2019-01-22 | 2019-06-07 | 华北有色工程勘察院有限公司 | The ultra-deep that can bear explosion influence adopts hole supporting and retaining system and its construction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120711 Termination date: 20161127 |