CN203429640U - Enclosure structure for large-range underground engineering foundation pit excavation project - Google Patents
Enclosure structure for large-range underground engineering foundation pit excavation project Download PDFInfo
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- CN203429640U CN203429640U CN201320478110.XU CN201320478110U CN203429640U CN 203429640 U CN203429640 U CN 203429640U CN 201320478110 U CN201320478110 U CN 201320478110U CN 203429640 U CN203429640 U CN 203429640U
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- pier body
- stake
- enclosing structure
- space enclosing
- underground engineering
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Abstract
The utility model discloses an enclosure structure for a large-range underground engineering foundation pit excavation project. Lateral resisting piers are arranged along the periphery of a foundation pit enclosure at intervals; the large-range foundation pit periphery is divided into a plurality of small regions; lateral resisting enclosure piles are arranged between the lateral resisting piers; each lateral resisting pier is connected by using a capping beam on the top of each enclosure pier; thus a complete lateral resisting pier combined enclosure structure is formed. The enclosure structure has the beneficial effects that the lateral resisting piers are supported by using diagonal piles, the foundation pit enclosure structure enables that an inner support with high manufacturing cost does not need to be constructed routinely, the underground engineering construction is greatly facilitated, meanwhile the problem of insufficient reliability for use of an anchor rod in soft coil or incapability of implementing when the anchor rod exceeds a red line is solved, and the enclosure structure has the advantages of strong lateral resisting capacity, good lateral deflection control, safe and reliable enclosure, low manufacturing cost, no inner support for performing underground engineering construction and the like.
Description
Technical field
The utility model relates to a kind of for the space enclosing structure of Underground Engineering Excavation foundation ditch on a large scale, relates in particular to a kind of anti-side pier body combined type space enclosing structure.
Background technology
Development along with urban construction, the underground constructions such as ultra-large type underground garage, underground store are significantly emerged in large numbers, these are the excavating of underground construction on a large scale, because yardstick cannot be established inner support greatly, generally can only take self-supporting to go along with sb. to guard him way, periphery is established the central island form of construction work of interim diagonal brace or is taked soil nailing anchor pole etc. to go along with sb. to guard him form, but these go along with sb. to guard him way, existence involves great expense, construction trouble, the problems such as the exceedingly popular line of soil nailing anchor pole.
For the soft foundation in vast coastal cities, also there is the problems such as control displacement is difficult, and reliability is low in above-mentioned way simultaneously.There is no at present the reasonable way of going along with sb. to guard him reliably and face so a large amount of these classes that occur underground engineering of going along with sb. to guard him on a large scale, the present invention be just for establishing the Foundation Pit Support Engineering on a large scale of inner support in this class weak soil, researched and developed and a kind ofly do not needed to establish inner support, gone along with sb. to guard him safe and reliable, construction is simple and the low form of completely newly going along with sb. to guard him without the exceedingly popular line problem of anchor pole of cost.
This novel space enclosing structure is applicable in each field of civil engineering, and the slope protection works in the shore protection harbour in underground garage engineering as medium-and-large-sized in civilian construction and Large Underground Emporium engineering, water conservancy port works and dam construction, bridge field etc. is gone along with sb. to guard him engineering.
Summary of the invention
The utility model provides a kind of space enclosing structure of underground construction excavation of foundation pit on a large scale that is applicable to, and has solved the problems such as the cost of using brace summer braced cuts to cause in traditional foundation pit enclosure structure is high, constructional difficulties, displacement control is difficult, reliability is low.
A kind of for the space enclosing structure of Underground Engineering Excavation base pit engineering on a large scale, peripheral intervals along bracing of foundation pit is provided with anti-side pier body, large-scale foundation ditch periphery is divided into some zonules, anti-side pier body is asked and has been set anti-gusset fender pile, utilize the capping beam on fender post top to connect each anti-side pier body, form complete anti-side pier body combined type space enclosing structure.
Described anti-gusset fender pile single distribution as required, the double distribution of double distribution or single combination interval, stake footpath arranges according to design.Anti-gusset fender pile can be the stake of existing cast-in-situ reinforced concrete circle, prefabricated reinforced concrete barrette, the stake of T shape, I-shaped stake, circular stake or various Section-steel Piles etc.
Capping beam can be cast-in-place strip capping beam, can be also the capping beam of strip tape anchor pole, can also be the capping beam of strip tape projection, is applicable to according to actual needs multiple underground bracing of foundation pit.
Described anti-side pier body is formed by the pier body coping on the oblique oblique stake setting and vertical stake combination stake top; Described oblique stake and the common support pier body coping of vertical stake are for resisting the foundation ditch periphery Water And Earth Pressures that between pier body, anti-gusset fender pile top capping beam transmits; Described oblique one end setting in foundation ditch of oblique stake is deep into the good soil layer of hole at the end, in order to the lateral resistant ability of the anti-side pier of abundant raising body.
Described oblique stake can be reinforced concret precast pile or piling bar form.Stake footpath and the row of vertical stake are determined as required.
Described anti-side pier dignity sets to foundation ditch one side the oblique stake that many of rows are parallel to each other.The concrete radical of oblique stake is definite according to design, mechanical calculation, and assurance space enclosing structure can be resisted foundation ditch periphery Water And Earth Pressures.
Described anti-side pier dignity sets the mutual parallel oblique stake of many rows to foundation ditch one side.
Described oblique stake and the angle of horizontal direction are between 30～70 degree, and length and the installation position of oblique stake determine through mechanical calculation, in conjunction with pier body coping, make the lateral force resistance of space enclosing structure reach designing requirement.
The described oblique stake that is positioned at the oblique stake of row dual-side is outer splayed to extending out.Oblique stake be many rows, and during two of every rows, oblique can be as required single is outer splayed, also can arrange more and be outer splayed.Oblique stake be many rows, and two of every rows above time, can be outer splayed in two, single outside, also can two of how exclusive sides be outer splayed.In like manner, when oblique stake is single, also can be outer splayed.
When the excavation of foundation pit degree of depth is darker, described anti-side pier body combined type space enclosing structure can be two-layer and two-layer more than, described oblique stake is successively through each layer of pier body coping.Each layer of pier body coping is connected the common anti-side pier body combined type space enclosing structure that forms MULTILAYER COMPOSITE with capping beam, waling beam between each layer of pier body.
Whole space enclosing structure, when guaranteeing to go along with sb. to guard him intensity, has been saved material, has reduced cost.
Described capping beam is trussed construction.Trussed construction can be the structures such as equal angles Vierendeel truss, varied angle broken line truss, curve truss.When space enclosing structure is multilayer, waling beam can be also trussed construction.
Each described anti-side pier body is connected in conjunction with arc shaped prestressed stretch-draw steel truss with each layer of waling beam by capping beam.
The beneficial effects of the utility model:
1, in bracing of foundation pit, interval arranges anti-side pier body, makes anti-side pier body become the strong point, by capping beam, connects each strong point, has strengthened the lateral resistant ability of foundation pit enclosure structure, has reduced construction costs simultaneously;
2, by using oblique stake to support anti-side pier body, foundation pit enclosure structure is the high inner support of construction costs anomaly, greatly facilitate underground engineering construction, solved the problem of using anchor pole reliability deficiency or the exceedingly popular line of anchor pole to implement in weak soil simultaneously;
3, by increasing flexibly the anti-side pier body that distributes, the problem that regional area space enclosing structure is born larger Water And Earth Pressures can be solved easily, also the problem that lateral displacement is more strictly controlled in regional area requirement can be solved.
4, the utlity model has that lateral resistant ability is strong, lateral displacement control well, go along with sb. to guard him safe and reliable, cost is low and without inner support, carry out the advantages such as underground engineering construction.
Accompanying drawing explanation
Fig. 1 is that a top view for beam space enclosing structure is pressed in the utility model bar shaped;
Fig. 2 is the sectional view of anti-side pier body a-a shown in Fig. 1;
Fig. 3 is the top view of the utility model belt strip anchor pole capping beam space enclosing structure;
Fig. 4 is the sectional view of anti-side pier body b-b shown in Fig. 3;
Fig. 5 is the top view of the utility model belt strip projection capping beam space enclosing structure;
Fig. 6 is the sectional view of anti-side pier body c-c shown in Fig. 5;
Fig. 7 is the top view of the utility model bar shaped truss space enclosing structure;
Fig. 8 is the sectional view of anti-side pier body d-d shown in Fig. 7;
Fig. 9 is the top view of the utility model equal angles Vierendeel truss space enclosing structure;
Figure 10 is the top view of the utility model varied angle broken line truss space enclosing structure;
Figure 11 is the top view of the utility model arc shaped stretch-draw steel truss space enclosing structure;
Figure 12 is the sectional view of anti-side pier body e-e shown in Figure 11;
Figure 13-14th, the sectional view that the double oblique stake of the utility model is arranged;
Figure 15 is the sectional view of the anti-side pier of the double-deck space enclosing structure of the utility model body;
Figure 16 is the top view that the oblique stake of the outer splayed of the utility model is arranged.
The specific embodiment
As shown in Figure 1-2, a kind of anti-side pier body combined type space enclosing structure, peripheral intervals along bracing of foundation pit is provided with anti-side pier body 1,1 of anti-side pier body has set anti-gusset fender pile 2, the bar shaped capping beam 3 on 2 tops of anti-gusset fender pile is connecting each anti-side pier body 1, forms complete anti-side pier body combined type space enclosing structure.
The spacing of anti-side pier body 1 is according to the excavation of foundation pit degree of depth, excavation of foundation pit scope soil nature and the comprehensive value of capping beam 3 form of structure, and span is between 10～50m.
The diameter of vertical stake 5 is 0.32m, is single layout, can adopt structure and the material identical with anti-gusset fender pile 2, also can adjust according to actual needs size and material.
The horizontal section of pier body coping 6 is trapezoidal, and trapezoidal minor face one side is to foundation ditch.The thickness of pier body coping 6 is identical with bar shaped capping beam 3.Oblique stake 4 is two that are parallel to each other, and is arranged on trapezoidal minor face one side, adopts prefabricated reinforced concrete stake or piling bar, can also adopt prefabricated tubular pile, and pile top enters in hardpan, the long decision of a buried depth according to hardpan of stake, and pile body carries out waterproofing work at lower shoe place, ground.
As shown in Fig. 3-6, the capping beam 3 that connects each anti-side pier body can be belt strip anchor pole shape or belt strip projection shape, for strengthening the anti-side direction ability of space enclosing structure.
Also can be as shown in Fig. 7-10, capping beam 3 is trussed construction, trussed construction can be for structures such as equal angles Vierendeel truss, varied angle broken line truss, curve truss, so that adapt to multiple foundation pit enclosure structure.
Can also be as shown in Figure 11-12, each anti-side pier body 1 connects in conjunction with arc shaped prestressed stretch-draw steel truss by bar shaped capping beam 3, and it is higher that this kind of space enclosing structure is applicable to bracing of foundation pit risk, needs larger anti-gusset to protect to power, guarantees foundation ditch safety.
Except adopting shown in above-mentioned, strengthen the anti-side direction ability that capping beam 3 improves foundation ditch, the safety that can also improve foundation ditch by strengthening the anti-side direction ability of anti-side pier body 1.
As shown in figure 13, by being set, double oblique stake 4 strengthens the anti-side direction ability of anti-side pier body 1.Multi-form anti-side pier body 1, the strengthening form of employing also can be different, as shown in figure 14.
As Figure 15, when the excavation of foundation pit degree of depth is darker, anti-side pier body combined type space enclosing structure is two-layer, and oblique stake 4, successively through each layer of pier body coping 6, with 6 combinations of each layer of pier body coping, had both been strengthened the anti-side direction ability of space enclosing structure, had saved again cost.According to mechanical calculation requirement, the vertical stake 5 of anti-side pier body 1 is two to arrange and put, and strengthens the lateral force resistance of space enclosing structure integral body.
Wherein capping beam 3, the waling beam between each layer of pier body coping 6 and each layer of pier body formed the anti-side pier body combined type space enclosing structure of MULTILAYER COMPOSITE jointly.
Waling beam also can adopt trussed construction or capping beam in conjunction with trussed construction.
Except above-mentioned embodiment, the present invention can also have similar other embodiment, and all employings are equal to replaces or technical scheme that equivalent transformation forms, all drops on the claimed scope of the present invention.
Claims (9)
1. one kind for the space enclosing structure of Underground Engineering Excavation base pit engineering on a large scale, it is characterized in that: the peripheral intervals along bracing of foundation pit is provided with anti-side pier body (1), large-scale foundation ditch periphery is divided into some zonules, between anti-side pier body, set anti-gusset fender pile (2), utilize the capping beam (3) on fender post top to connect each anti-side pier body (1), form complete anti-side pier body combined type space enclosing structure.
2. according to claim 1 for the space enclosing structure of Underground Engineering Excavation base pit engineering on a large scale, it is characterized in that: the pier body coping (6) that described anti-side pier body (1) is pushed up in conjunction with stake by the oblique oblique stake (4) setting and vertical stake (5) forms; The common support pier body coping (6) of described oblique stake (4) and vertical stake (5) is for resisting the foundation ditch periphery Water And Earth Pressures that between pier body, anti-gusset fender pile top capping beam (3) transmits; Described oblique stake (4) oblique one end setting in foundation ditch is deep into the good soil layer of hole at the end.
3. according to claim 2 for the space enclosing structure of Underground Engineering Excavation base pit engineering on a large scale, it is characterized in that: described anti-side pier body (1) sets towards foundation ditch one side the oblique stake (4) that many of rows are parallel to each other.
4. according to claim 2 for the space enclosing structure of Underground Engineering Excavation base pit engineering on a large scale, it is characterized in that: described anti-side pier body (1) sets many rows parallel oblique stake (4) each other towards foundation ditch one side.
According to described in claim 3 or 4 for the space enclosing structure of Underground Engineering Excavation base pit engineering on a large scale, it is characterized in that: described oblique stake (4) and the angle of horizontal direction 30～70 spend between.
6. according to claim 3 for the space enclosing structure of Underground Engineering Excavation base pit engineering on a large scale, it is characterized in that: the described oblique stake (4) that is positioned at the oblique stake of a row (4) dual-side is outer splayed to extending out.
7. according to claim 2 for the space enclosing structure of Underground Engineering Excavation base pit engineering on a large scale, it is characterized in that: when excavation of foundation pit is darker, described anti-side pier body combined type space enclosing structure can be two-layer and two-layer more than, described oblique stake (4) is successively through each layer of pier body coping (6); Between pier body, each lamination back timber and waling beam are connected with each layer of pier body coping.
8. according to claim 7 for the space enclosing structure of Underground Engineering Excavation base pit engineering on a large scale, it is characterized in that: described capping beam (3) and waling beam are trussed construction.
9. according to claim 7 for the space enclosing structure of Underground Engineering Excavation base pit engineering on a large scale, it is characterized in that: each described anti-side pier body (1) is connected in conjunction with arc shaped prestressed stretch-draw steel truss with each layer of waling beam by capping beam (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320478110.XU CN203429640U (en) | 2013-08-05 | 2013-08-05 | Enclosure structure for large-range underground engineering foundation pit excavation project |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320478110.XU CN203429640U (en) | 2013-08-05 | 2013-08-05 | Enclosure structure for large-range underground engineering foundation pit excavation project |
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| Publication Number | Publication Date |
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| CN203429640U true CN203429640U (en) | 2014-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320478110.XU Expired - Lifetime CN203429640U (en) | 2013-08-05 | 2013-08-05 | Enclosure structure for large-range underground engineering foundation pit excavation project |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103485348A (en) * | 2013-08-05 | 2014-01-01 | 杭州南联土木工程科技有限公司 | Lateral-force-resisting pier body combined-type fender structure in large-area pit excavation |
| CN105442618B (en) * | 2016-01-08 | 2018-03-16 | 上海岩土工程勘察设计研究院有限公司 | Accessible vertical type foundation pit supporting construction in hole |
| CN115233689A (en) * | 2022-07-04 | 2022-10-25 | 浙江工业大学 | Combined type enclosure structure for soft soil foundation pit and construction method thereof |
-
2013
- 2013-08-05 CN CN201320478110.XU patent/CN203429640U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103485348A (en) * | 2013-08-05 | 2014-01-01 | 杭州南联土木工程科技有限公司 | Lateral-force-resisting pier body combined-type fender structure in large-area pit excavation |
| CN105442618B (en) * | 2016-01-08 | 2018-03-16 | 上海岩土工程勘察设计研究院有限公司 | Accessible vertical type foundation pit supporting construction in hole |
| CN115233689A (en) * | 2022-07-04 | 2022-10-25 | 浙江工业大学 | Combined type enclosure structure for soft soil foundation pit and construction method thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140212 |