CN214883693U - Supporting construction suitable for unbalance loading foundation ditch - Google Patents
Supporting construction suitable for unbalance loading foundation ditch Download PDFInfo
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- CN214883693U CN214883693U CN202120407387.8U CN202120407387U CN214883693U CN 214883693 U CN214883693 U CN 214883693U CN 202120407387 U CN202120407387 U CN 202120407387U CN 214883693 U CN214883693 U CN 214883693U
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Abstract
The utility model provides a supporting construction suitable for unbalance loading foundation ditch, this supporting construction can increase the pile bolck restraint, warp and resist the horizontal unbalance loading of foundation ditch between better coordination stake, can reduce retaining structure internal force and foundation ditch deformation, relate to the underground structure supporting technology field. The utility model provides a supporting construction suitable for off-load foundation ditch, includes off-load side wall fender pile and faces the sky side fender pile, off-load side wall fender pile and face all to be equipped with the guan liang on the sky side fender pile, off-load side wall fender pile is equipped with the supporting station, the waist roof beam has set firmly on the supporting station, the waist roof beam with face and be equipped with between the sky side fender pile guanliang and lap foundation ditch confined concrete cover plate, the interval is equipped with many crossbeams on the concrete cover plate lower surface. The utility model discloses the purpose of guaranteeing construction safety and protection all ring edge borders has been reached.
Description
Technical Field
The utility model relates to a excavation supporting technical field, specificly relate to a supporting construction suitable for unbalance loading foundation ditch.
Background
With the acceleration of urbanization process, the development and utilization of underground space involve more and more deep foundation pit engineering. Due to the limitation of conditions such as planning site selection, land utilization, terrain, surrounding environment and the like, the deep foundation pit engineering in hilly terrain cities often encounters the situation that one side has large topographic relief or building overload, and the other side has large temporary space along the vertical range of the foundation pit, so that the whole deep foundation pit supporting structure is in a large horizontal unbalance loading stress state. If the deep foundation pit support structure adopts conventional arrangement again, there are following problems:
1. the pile top constraint is weak, and the foundation pit space effect is poor; the conventional two-side fender post crown beams are connected through spaced concrete supports, the support rigidity is obviously reduced along with the increase of the width of the foundation pit, and in addition, the fender post on one side is empty, so that the restraint of the supports on the pile top on the unbalance loading side is weakened, and the space effect of the foundation pit is poor;
2. the common stress capability of the coordinated fender posts under the action of unbalance loading is poor; due to the characteristics of large concrete support span, large plane support distance and small support section between the conventional crown beams, the formed couple opposite to the unbalance loading side pressure is small, the deformation between piles can not be well coordinated, and further the internal force of the unbalance loading side wall pile protection and the deformation of the pile top are increased. Therefore, the stress and deformation of the enclosure structure can be increased, and great hidden danger is brought to the safety of the foundation pit.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a supporting construction suitable for unbalance loading foundation ditch is provided, this supporting construction can increase the pile bolck restraint, warp and resist the horizontal unbalance loading of foundation ditch between better coordination stake, can reduce envelope internal force and foundation ditch deformation.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a supporting construction suitable for off-load foundation ditch, includes off-load side wall fender pile and faces the sky side fender pile, all be equipped with the guan liang on off-load side wall fender pile and the face sky side fender pile, off-load side wall fender pile is equipped with the supporting station, the waist roof beam has set firmly on the supporting station, be equipped with between waist roof beam and the face sky side fender pile guanliang with foundation ditch confined concrete apron, concrete apron level sets up, and one end with waist roof beam rigid coupling, the other end with face sky side fender pile guanliang rigid coupling, the interval is equipped with many crossbeams on the concrete apron lower surface, the crossbeam also one end with waist roof beam rigid coupling, the other end with face sky side fender pile guanliang rigid coupling.
Furthermore, the waist beam, the cross beam and the hollow side fender pile crown beam are integrated with the concrete cover plate.
Further, the offset side wall pile comprises a first cross-section and a second cross-section, wherein the second cross-section is located above the first cross-section, and the cross-sectional area of the second cross-section is smaller than that of the first cross-section, so that the supporting platform is formed on the top of the first cross-section.
Further, the cross section of the first cross section is circular, the cross section of the second cross section is crescent, and the cross section area of the second cross section is not less than 1/4-1/3 of the cross section area of the first cross section.
Furthermore, vertical ribs used for being connected with the steel ribs in the waist rail are arranged in the first section, and the offset side wall guard pile is fixedly connected with the waist rail through the vertical ribs.
Furthermore, a plurality of inner supports arranged at intervals are further arranged below the cross beam, one end of each inner support is connected with the unbalance-loading side wall guard pile, and the other end of each inner support is connected with the side wall guard pile.
Furthermore, a discharge hole is formed in the concrete cover plate.
The utility model has the advantages that: the utility model discloses a waist rail, face sky side fender pile hat roof beam, concrete apron and crossbeam will face sky side fender pile upper end and unbalance loading side wall fender pile upper end part and connect into a whole, it forms hyperstatic retaining structure to make to connect between the fender pile, this retaining structure bulk rigidity is big and the space effect is strong, can be in coordination well that foundation ditch both sides fender pile warp, resist the horizontal unbalance loading of foundation ditch jointly, reach and reduce the retaining structure internal force, the control foundation ditch warp, guarantee construction safety and the purpose of protection all ring edge borders.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a cross-sectional view taken along A-A of FIG. 1;
FIG. 3 is a schematic structural view of the offset side wall pile of the present invention;
FIG. 4 is a schematic view of the connecting structure of the waist rail and the offset side wall fender pile of the present invention;
shown in the figure: foundation pit 1, unbalance loading side wall fender pile 2, face sky side fender pile 3, face sky side fender pile hat roof beam 4, concrete apron 5, waist rail 6, interior support 7, first cross section 21, second cross section 22, rest table 23, perpendicular muscle 24, crossbeam 51, discharge opening 52.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
As shown in fig. 1, fig. 2, the utility model discloses a supporting construction suitable for unbalance loading foundation ditch, include unbalance loading side wall fender pile 2 and face empty side fender pile 3, unbalance loading side wall fender pile 2 and face all be equipped with the crown beam on the empty side fender pile 3. The lower ends of the offset-load side wall guard pile 2 and the side empty side guard pile 3 are embedded into a soil body 11, and the lower ends of the offset-load side wall guard pile 2 and the side empty side guard pile 3 are coordinately restrained through the soil body 11. In order to form bigger couple with the opposite side pressure of unbalance loading between the fender pile of both sides in order to coordinate the fender pile top deformation of both sides, resist the unbalance loading power jointly, unbalance loading side wall fender pile 2 is equipped with supporting station 23, has set firmly waist rail 6 on supporting station 23, waist rail 6 with face between the empty side fender pile crown beam 4 and be equipped with foundation ditch 1 confined concrete apron 5, concrete apron 5 level sets up, and one end with 6 rigid couplings of waist rail, the other end with face empty side fender pile crown beam 4 rigid couplings to it is whole to face 3 upper ends of empty side fender pile and 2 upper end parts of unbalance loading side wall fender pile to connect into one. The concrete cover plate 5 is set to be in a structural form of sealing the foundation pit, and the connection area (stress area) of the concrete cover plate 5 and the fender piles on the two sides is large, so that a large couple opposite to the side pressure of the unbalance loading can be borne, and the fender piles on each side can be uniformly stressed. The concrete cover plate 5 is horizontally arranged, so that the horizontal force generated by the unbalance loading can be better resisted. Because the span of the foundation pit is large, in order to reduce the thickness of the concrete cover plate on the premise of ensuring the connection performance, a plurality of cross beams 51 are arranged on the lower surface of the concrete cover plate 5 at intervals, wherein one end of each cross beam is fixedly connected with the waist beam 6, and the other end of each cross beam is fixedly connected with the empty side fender pile crown beam 4.
The utility model discloses in, concrete cover 5 is usually under the foundation ditch excavation to the construction when concrete cover 5 below 100 ~ 200mm departments. It can be understood that, in order to facilitate the subsequent excavation and backfilling construction of the foundation pit, the concrete cover plate 5 may be provided with the discharge hole 52 as required, or of course, the discharge hole may be separately formed in the sidewall of the foundation pit. When the discharge hole 52 is arranged on the concrete cover plate 5, the shape can be rectangular, oval or circular, but the long edge or the diameter is 1/4-1/3 of the width of the foundation pit.
The utility model discloses a waist rail, face sky side fender pile guan liang, concrete cover plate and crossbeam will face sky side fender pile upper end and unbalance loading side wall fender pile upper end part and connect into a whole, promptly: the supporting structure is large in overall rigidity and strong in space effect, can well cooperate with the deformation of the surrounding piles at the two sides of the foundation pit to jointly resist the horizontal unbalance loading of the foundation pit, and achieves the purposes of reducing the internal force of the supporting structure, controlling the deformation of the foundation pit and ensuring the construction safety and the surrounding environment.
The utility model discloses in, the rigid coupling is connected and can be adopted anchor joint, bolted connection or integrative structure etc.. In some embodiments, the wale 6, the cross member 51 and the adjacent side fender post crown beam 4 can adopt steel beams. In order to increase the connection strength, the wale 6, the cross beam 51 and the adjacent side fender pile crown beam 4 are preferably integrated with the concrete cover 5. Namely: waist rail 6, crossbeam 51, face sky side fender pile guan liang 4 and all adopt the concrete beam and form an organic whole structure with concrete cover 5 pouring simultaneously, so can increase by the waist rail, face the wholeness of the rigid support system that sky side fender pile guanliang, concrete cover and crossbeam constitute, and then the both sides fender pile that coordinates that can be better warp.
The supporting platform 23 is arranged on the side surface of the side wall fender pile 2 with unbalance loading, and because the fender pile is usually constructed by adopting mechanical hole forming and pouring, the problem of inconvenient construction exists. In order to solve the above problem, preferably, the offset side wall pile 2 has a variable cross-section structure, and includes a first cross-section 21 and a second cross-section 22, where the second cross-section 22 is located above the first cross-section 21 and has a cross-sectional area smaller than that of the first cross-section 21, so that a support platform 23 is formed at the abrupt change of the cross-section of the first cross-section 21 towards the second cross-section 22, i.e. at the top of the first cross-section 21. Specifically, when the waist rail 6 is arranged on the supporting platform 23, the first section 21 is internally provided with vertical ribs 24 for connecting with the steel ribs in the waist rail 6, and the offset-load side wall pile 2 is fixedly connected with the waist rail 6 through the vertical ribs 24, so that the waist rail 6 can better transmit the offset-load reverse force to the offset-load side wall pile 2.
In some embodiments, the first cross-sectional section 21 and the second cross-sectional section 22 are both square in cross-section, and in some embodiments, the first cross-sectional section 21 and the second cross-sectional section 22 are both oval in cross-section. The first cross-sectional section 21 is preferably circular in cross-section, in view of the circular shape which facilitates the mechanized boring operation. When the first section 21 is circular in cross-section, the second section 22 is crescent in cross-section for ease of construction. When the cross section of the first cross section 21 is circular and the cross section of the second cross section 22 is crescent, in order to ensure the strength of the second cross section 22, the cross section area of the second cross section 22 is not less than 1/4-1/3 of the cross section area of the first cross section 21.
For better resisting the unbalance loading, the utility model discloses in, crossbeam 51 below still is equipped with the interior support 7 that a plurality of intervals set up, and interior support 7 one end is connected with unbalance loading side wall fender pile 2, and the other end is connected with face empty side fender pile 3. The inner support 7 can be a steel support or a reinforced concrete support, and the specific vertical arrangement height and the horizontal arrangement distance are determined according to the stress requirement of the supporting structure.
Claims (7)
1. The utility model provides a supporting construction suitable for unbalance loading foundation ditch, includes unbalance loading side wall fender pile (2) and faces empty side fender pile (3), unbalance loading side wall fender pile (2) and face all be equipped with crown beam on empty side fender pile (3), its characterized in that: unbalance loading side wall fender pile (2) are equipped with supporting station (23), waist rail (6) have set firmly on supporting station (23), waist rail (6) with face to be equipped with between empty side fender pile hat roof beam (4) with foundation ditch confined concrete apron (5), concrete apron (5) level sets up, and one end with waist rail (6) rigid coupling, the other end with face empty side fender pile hat roof beam (4) rigid coupling, the interval is equipped with many crossbeams (51) on concrete apron (5) lower surface, crossbeam (51) also one end with waist rail (6) rigid coupling, the other end with face empty side fender pile hat roof beam (4) rigid coupling.
2. A support structure suitable for an offset loading foundation pit as claimed in claim 1, wherein: the waist beam (6), the cross beam (51) and the hollow side fender pile crown beam (4) are all integrated with the concrete cover plate (5).
3. A support structure for an offset loading foundation pit as claimed in claim 1 or claim 2, wherein: the offset-load side wall pile (2) comprises a first cross-section (21) and a second cross-section (22), wherein the second cross-section (22) is located above the first cross-section (21) and has a cross-sectional area smaller than that of the first cross-section (21), so that the supporting platform (23) is formed on the top of the first cross-section (21).
4. A support structure for an offset loading foundation pit as claimed in claim 3, wherein: the cross section of the first cross section (21) is circular, the cross section of the second cross section (22) is crescent, and the cross section area of the second cross section (22) is not less than 1/4-1/3 of the cross section area of the first cross section (21).
5. A support structure for an offset loading foundation pit as claimed in claim 3, wherein: vertical ribs (24) used for being connected with the steel bars in the waist rail (6) are arranged in the first section (21), and the unbalance loading side wall pile (2) is fixedly connected with the waist rail (6) through the vertical ribs (24).
6. A support structure suitable for an offset loading foundation pit as claimed in claim 1, wherein: a plurality of inner supports (7) arranged at intervals are further arranged below the cross beam (51), one end of each inner support (7) is connected with the off-load side wall fender pile (2), and the other end of each inner support is connected with the side fender pile (3).
7. A support structure suitable for an offset loading foundation pit as claimed in claim 1, wherein: and a discharge hole (52) is formed in the concrete cover plate (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120407387.8U CN214883693U (en) | 2021-02-24 | 2021-02-24 | Supporting construction suitable for unbalance loading foundation ditch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120407387.8U CN214883693U (en) | 2021-02-24 | 2021-02-24 | Supporting construction suitable for unbalance loading foundation ditch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214883693U true CN214883693U (en) | 2021-11-26 |
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ID=78855351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120407387.8U Active CN214883693U (en) | 2021-02-24 | 2021-02-24 | Supporting construction suitable for unbalance loading foundation ditch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214883693U (en) |
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2021
- 2021-02-24 CN CN202120407387.8U patent/CN214883693U/en active Active
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