CN210684722U - Deep foundation pit supporting structure next to subway - Google Patents
Deep foundation pit supporting structure next to subway Download PDFInfo
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- CN210684722U CN210684722U CN201921405173.6U CN201921405173U CN210684722U CN 210684722 U CN210684722 U CN 210684722U CN 201921405173 U CN201921405173 U CN 201921405173U CN 210684722 U CN210684722 U CN 210684722U
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Abstract
The utility model relates to the technical field of deep foundation pit supporting structures, and discloses a deep foundation pit supporting structure next to a subway, which comprises a plurality of supporting piles, a plurality of connecting beams which are horizontally arranged and a ground connecting wall body, wherein the plurality of supporting piles are arranged in an occlusion manner to form an occlusive pile; the ground is even the wall body and has the lateral surface towards subway tunnel, and the fixed fender pile of one end of even tie beam, the other end of even tie beam is along the lateral surface direction that deviates from the ground even the wall body and is the extension and arranges, and the lateral surface of the wall body is even and fixed to the secant pile laminating. The underground diaphragm wall body and each connecting beam form a supporting system, the deep foundation pit is supported, and the secant pile is combined, so that the supporting strength of the supporting system is enhanced, and the safety is improved; simultaneously, the secant pile separates subway tunnel and support system, reduces the influence of support system to the subway tunnel, improves the security to, the secant pile plays the stagnant water effect, further strengthens holistic support intensity, ensures construction safety and subway tunnel's safety.
Description
Technical Field
The patent of the utility model relates to a deep basal pit supporting construction's technical field particularly, relates to the deep basal pit supporting construction of next-door neighbour subway.
Background
The deep foundation pit support is a measure adopted for ensuring the safety of underground structure construction and the surrounding environment of the foundation pit.
Aiming at the ultra-deep foundation pit, the outer side of the foundation pit is close to the subway, the enclosure structure adopts the underground continuous wall, and grooving of the underground continuous wall can affect the subway and affect the safety of the surrounding foundation pit.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a deep basal pit supporting construction of next-door neighbour subway aims at solving prior art, next-door neighbour subway, the not good problem of deep basal pit supporting construction security.
The utility model is realized in such a way that the deep foundation pit supporting structure next to the subway comprises a plurality of supporting piles, a plurality of connecting beams which are horizontally arranged and a ground connecting wall body, wherein the plurality of supporting piles are arranged in an occlusion way to form an occlusive pile; the ground is even the wall body has the lateral surface towards subway tunnel, the one end of linking the roof beam is fixed the fender pile, the other end of linking the roof beam is along deviating from the lateral surface direction of the wall body is the extension and arranges, the secant pile laminating is just fixed the lateral surface of the wall body is even to the ground.
Further, even tie the roof beam includes the back timber, the one end of back timber with the top of the wall body is even the crown beam portion that forms in the connection of the top beam, the crown beam portion with the secant pile is fixed arrangement, the other end of back timber is along deviating from the lateral surface direction of the wall body is horizontal extension and arranges.
Furthermore, the tie beam includes that a plurality of underbeams that are the level and extend the arrangement, along top-down direction, each the underbeams are parallel interval arrangement, the underbeams is in the below of back timber, the one end of underbeams with it is waist rail connection to link the wall body, the other end of underbeams is along deviating from it is the level extension arrangement to link the lateral surface direction of wall body.
Further, the deep foundation pit supporting structure next to the subway comprises upright piles which are longitudinally arranged, and the top beam and each of the lower beams are fixedly arranged with the upright piles respectively.
Further, the deep foundation pit supporting structure close to the subway is provided with a backfill hole, and the backfill hole is provided with a perfusion layer; the secant pile is provided with an outer pile surface facing the subway tunnel, and the pouring layer and the outer pile surface of the secant pile are in butt joint and fixed arrangement.
Further, the depth of the pouring layer is consistent with the embedding depth of the occlusive pile.
Furthermore, the underground diaphragm wall body is arranged longitudinally, the embedding depth of the underground diaphragm wall body is more than 15m, and the rock-entering depth of the underground diaphragm wall body is more than 1 m.
Further, the secant pile comprises a vegetable pile and a meat pile, and the support pile is a vegetable pile or a meat pile; the two vegetable piles are meshed to form a vegetable pile group, and the vegetable pile group and the meat pile are in staggered meshed arrangement in sequence.
Compared with the prior art, the utility model provides a deep basal pit supporting structure next to subway forms the support system through the ground wall body and each tie beam, supports the deep basal pit, combines the secant pile, helps strengthening the support intensity of support system, improves the security; simultaneously, the secant pile separates subway tunnel and support system, reduces the influence of support system to the subway tunnel, improves the security to, the secant pile plays the stagnant water effect, further strengthens holistic support intensity, ensures construction safety and subway tunnel's safety.
Drawings
Fig. 1 is a schematic view of the construction of a deep foundation pit supporting structure next to a subway provided by the utility model;
figure 2 is a schematic cross-sectional view of an occlusive pile provided by the present invention;
fig. 3 is a schematic cross-sectional view of a protective column provided by the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following describes the implementation of the present invention in detail with reference to specific embodiments.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and those skilled in the art can understand the specific meanings of the terms according to specific situations.
Referring to fig. 1-3, the preferred embodiment of the present invention is shown.
The utility model provides a deep foundation pit supporting structure next to subway, including a plurality of fender piles, a plurality of tie beams and ground even wall body 10, the tie beams are arranged in horizontal extension, a plurality of fender piles are arranged in occlusion to form an occlusive pile 20; the underground diaphragm wall body 10 is provided with an outer side face facing the subway tunnel 70, a supporting pile is fixed at one end of a connecting beam, the other end of the connecting beam extends along the direction of the outer side face departing from the underground diaphragm wall body 10, and the secant pile 20 is attached to and fixes the outer side face of the underground diaphragm wall body 10.
In the deep foundation pit supporting structure next to the subway, the underground diaphragm wall body 10 and each connecting beam form a supporting system to support the deep foundation pit, and the secant pile 20 is combined, so that the supporting strength of the supporting system is enhanced, and the safety is improved; meanwhile, the secant pile 20 separates the subway tunnel 70 from the supporting system, so that the influence of the supporting system on the subway tunnel 70 is reduced, the safety is improved, the secant pile 20 plays a water stopping role, the overall supporting strength is further enhanced, and the construction safety and the safety of the subway tunnel 70 are guaranteed.
In this embodiment, the connecting beam includes a top beam 30, one end of the top beam 30 is connected with the top of the ground connection wall 10 in a form of a top beam 31 to form a top beam 31, the top beam 31 is fixedly arranged with the snap pile 20, and the other end of the top beam 30 is horizontally extended and arranged along the direction away from the outer side surface of the ground connection wall 10; in this way, the top beam 30, the underground diaphragm 10 and the secant pile 20 are integrally connected through the top beam 31, thereby providing the supporting strength of the integral supporting structure.
The level of the top beam 31 is lower than that of the top of the secant pile 20, so that the construction of the top beam 31 is facilitated, the top beam 30, the underground diaphragm wall body 10 and the secant pile 20 are integrally formed by the top beam 31, and the supporting strength is improved.
The connecting beam comprises a plurality of lower beams 40 which extend horizontally, each lower beam 40 is arranged at intervals in parallel along the top-down direction, the lower beams 40 are positioned below the top beam 30, one end of each lower beam 40 is connected with the underground connecting wall body 10 in a waist beam 41 manner, and the other end of each lower beam 40 extends horizontally along the direction of the outer side surface which deviates from the underground connecting wall body 10; therefore, the top beam 30 is matched with the lower beam 40 to realize multi-level support of the deep foundation pit and ensure the safety of the support.
The top of the secant pile 20 is provided with a support guardrail which is arranged longitudinally, the bottom of the support guardrail and the secant pile 20 are fixedly arranged, and the top of the support guardrail extends upwards; like this, effectively avoid constructor mistake to fall to the foundation ditch in, improve foundation ditch construction safety.
The deep foundation pit supporting structure next to the subway comprises upright piles 50, wherein the upright piles 50 are longitudinally arranged, and the top beam 30 and each lower beam 40 are respectively and fixedly arranged with the upright piles 50; under the action of the vertical piles 50, the lower beams 40 and the top beams 30 are respectively supported and integrated with the ground coupling wall body 10, so that the supporting strength is enhanced.
The deep foundation pit supporting structure next to the subway is provided with a recharge hole, and the recharge hole is provided with a perfusion layer 60; the secant pile 20 is provided with an outer pile surface facing the subway tunnel 70, and the pouring layer 60 and the outer pile surface of the secant pile 20 are in butt joint and fixed arrangement; under the effect of filling layer 60, reinforcing stagnant water effect, simultaneously, can monitor the foundation ditch through the hole of irritating back and warp, later stage according to the testing condition, carries out the irritate back or slip casting, forms filling layer 60.
The recharging holes can be arranged in a hollow mode, and recharging or grouting is carried out according to the field requirements; therefore, the recharging hole can be detected according to the recharging hole.
The depth of the pouring layer 60 is consistent with the embedding depth of the occlusive pile 20; the filling layer 60 is matched with the occlusive pile 20, so that multi-level water stopping is realized, and the foundation pit supporting effect is improved.
The depth of the pouring layer 60 is consistent with the embedding depth of the diaphragm wall body 10, so that the integral supporting strength is improved.
The depth of the perfusion layer 60 extends to the rock stratum, so that the construction difficulty of the recharge hole is reduced while the supporting strength is ensured.
The formation of filling layer 60 has first drainage groove, under the effect of first drainage groove, plays the water conservancy diversion effect to rivers, when raining, effectively reduces the influence that foundation ditch support caused at the bottom of the rainfall.
The underground diaphragm wall body 10 is longitudinally arranged, the embedding depth of the underground diaphragm wall body 10 is more than 15m, and the rock-entering depth of the underground diaphragm wall body 10 is more than 1 m; thereby ensuring the supporting strength of the diaphragm wall body 10.
The secant pile 20 comprises a vegetable pile 22 and a meat pile 21, and the support pile is a vegetable pile 22 or a meat pile 21; the two vegetable piles 22 are meshed to form a vegetable pile 22 group, and the vegetable pile 22 group and the meat pile 21 are in staggered meshed arrangement in sequence; therefore, the construction cost is reduced while the supporting strength of the foundation pit is ensured, the construction steps are simplified, and the construction time is shortened.
The foundation pit bottom forms second water drainage tank, under the effect of second water drainage tank, plays the water conservancy diversion effect to rivers, when raining, plays the water conservancy diversion discharge effect to the ponding in the foundation pit, improves the holistic stability of foundation pit, the supporting of the supporting construction of being convenient for to the foundation pit.
The interior of the occlusive pile 20 is provided with a protective column 80, the protective columns 80 are longitudinally arranged, adjacent support piles are occluded to form an occlusion part 23, and the occlusion part 23 is embedded in the protective column 80; under the effect of protection post 80, the stagnant water effect of interlock stake 20 is strengthened, and the support intensity of supporting construction is strengthened.
The protective columns 80 are arranged in an H shape, each protective column 80 comprises a main column 81 and two side columns 82, the two side columns 82 are fixedly arranged at two ends of the main column 81 in a butt joint mode, the side columns 82 are vertically arranged with the main column 81, and the two side columns 82 are arranged with the main column 81 in an H shape; the main columns 81 are arranged in the occlusion parts 23, and the side columns 82 are arranged in an extending manner along the arrangement direction of the occlusion piles 20, so that the protective columns 80 have multi-level water stopping, and the water stopping effect is improved.
The construction example is as follows:
the excavation depth of the foundation pit is 24.5m, the thickness of the underground diaphragm wall body 10 is 1.2m, and the embedding depth can meet one of the following two conditions: 1) the embedding depth of the diaphragm wall body 10 is not less than 15m, and the rock-entering depth is not less than 1.0 m; 2) the diaphragm wall body 10 enters a final hole of 3.0m in rock, and the minimum embedding depth is required to be not less than 6.0 m.
Before the ground connection wall body 10 is constructed, 1.2m of secant pile 20 is constructed, and the embedding depth of the secant pile 20 is required to be the final hole of the ground connection wall body 10 or rock.
The outer pile surface of the secant pile 20 is provided with a recharging well with the diameter of 150mm, the recharging well is also used as a grouting hole and is used as an emergency measure for protecting subway deformation, and measures such as recharging or grouting can be carried out according to subway monitoring conditions in the later period.
The designed pile length of the occlusive pile 20 is 31.0m or the end hole of the slightly weathered rock is 3m, and the embedding depth of the occlusive pile 20 is not less than 3 m.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. The deep foundation pit supporting structure next to a subway is characterized by comprising a plurality of supporting piles, a plurality of horizontally arranged connecting beams and a ground connecting wall body, wherein the plurality of supporting piles are arranged in an occlusion manner to form occlusion piles; the ground is even the wall body has the lateral surface towards subway tunnel, the one end of linking the roof beam is fixed the fender pile, the other end of linking the roof beam is along deviating from the lateral surface direction of the wall body is the extension and arranges, the secant pile laminating is just fixed the lateral surface of the wall body is even to the ground.
2. The deep foundation pit supporting structure next to a subway as claimed in claim 1, wherein said connecting beam includes a top beam, one end of said top beam is connected with top of said underground continuous wall body to form a crown beam portion, said crown beam portion is fixedly arranged with said secant pile, and another end of said top beam is horizontally extended along the direction of outer side surface deviating from said underground continuous wall body.
3. The deep foundation pit supporting structure next to a subway as claimed in claim 2, wherein said tie beam includes a plurality of lower beams extending horizontally, each of said lower beams being spaced apart in parallel in a top-down direction, said lower beams being located below said top beam, one end of said lower beam being connected to said diaphragm wall in a wale, and the other end of said lower beam extending horizontally in a direction away from an outer side of said diaphragm wall.
4. The deep foundation pit supporting structure next to a subway of claim 3, wherein said deep foundation pit supporting structure next to a subway comprises vertical piles, said vertical piles are arranged longitudinally, and said top beam and each of said bottom beams are respectively arranged fixedly with said vertical piles.
5. The deep foundation pit supporting structure next to a subway in accordance with any one of claims 1-4, wherein the deep foundation pit supporting structure next to a subway has a backfill hole having a poured layer; the secant pile is provided with an outer pile surface facing the subway tunnel, and the pouring layer and the outer pile surface of the secant pile are in butt joint and fixed arrangement.
6. The deep foundation pit supporting structure in the immediate vicinity of a subway as claimed in claim 5, wherein a depth of said poured layer is identical to a depth of said bite pile embedment.
7. The deep foundation pit supporting structure next to a subway as claimed in any one of claims 1-4, wherein said diaphragm wall is arranged longitudinally, the embedding depth of said diaphragm wall is greater than 15m, and the rock-entering depth of said diaphragm wall is greater than 1 m.
8. The deep foundation pit supporting structure next to a subway as claimed in any one of claims 1-4, wherein said secant pile comprises a vegetable pile and a meat pile, said support pile is a vegetable pile or a meat pile; the two vegetable piles are meshed to form a vegetable pile group, and the vegetable pile group and the meat pile are in staggered meshed arrangement in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921405173.6U CN210684722U (en) | 2019-08-26 | 2019-08-26 | Deep foundation pit supporting structure next to subway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921405173.6U CN210684722U (en) | 2019-08-26 | 2019-08-26 | Deep foundation pit supporting structure next to subway |
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| Publication Number | Publication Date |
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| CN210684722U true CN210684722U (en) | 2020-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921405173.6U Active CN210684722U (en) | 2019-08-26 | 2019-08-26 | Deep foundation pit supporting structure next to subway |
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| CN (1) | CN210684722U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114718057A (en) * | 2022-05-23 | 2022-07-08 | 中交二公局萌兴工程有限公司 | Secant pile unit, partition wall and construction process of secant pile unit |
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2019
- 2019-08-26 CN CN201921405173.6U patent/CN210684722U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114718057A (en) * | 2022-05-23 | 2022-07-08 | 中交二公局萌兴工程有限公司 | Secant pile unit, partition wall and construction process of secant pile unit |
| CN114718057B (en) * | 2022-05-23 | 2023-12-26 | 中交二公局萌兴工程有限公司 | Secant pile unit, partition wall and construction process thereof |
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| CP03 | Change of name, title or address |
Address after: 518000 309, building G3, TCL International e city, Shuguang community, Xili street, Nanshan District, Shenzhen, Guangdong Patentee after: Shenzhen Dasheng Survey Technology Co.,Ltd. Address before: Room 309, G3, TCL International e city, Shuguang community, Xili street, Nanshan District, Shenzhen, Guangdong 518052 Patentee before: SHENZHEN DASHENG HI-TECH ENGINEERING Co.,Ltd. |
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