CN109914447B - Foundation pit supporting system - Google Patents
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- CN109914447B CN109914447B CN201910301177.8A CN201910301177A CN109914447B CN 109914447 B CN109914447 B CN 109914447B CN 201910301177 A CN201910301177 A CN 201910301177A CN 109914447 B CN109914447 B CN 109914447B
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Abstract
The invention provides a foundation pit supporting system, and relates to the technical field of buildings. This excavation supporting system includes: the supporting piles are arranged at intervals along the inner peripheral wall of the foundation pit; the reinforcing piles are arranged in the rock-soil layer on the periphery of the foundation pit, correspond to the supporting piles one by one, and are connected with the supporting piles through threaded connecting pieces so that the reinforcing piles are fixed relative to the supporting piles; and at least part of the water stop piece is arranged in a rock-soil layer on the periphery of the foundation pit, each water stop piece is arranged between two support piles, the water stop piece is obliquely arranged, and the water stop piece extends towards the bottom of the foundation pit. The foundation pit supporting system is good in supporting effect, and can guide water in a rock-soil layer into a foundation pit, so that collapse of the side wall of the foundation pit is avoided.
Description
Technical Field
The invention relates to the technical field of buildings, in particular to a foundation pit supporting system.
Background
At present, urban construction is rapidly developed like bamboo shoots in spring after rain, urban construction land is increasingly scarce, buildings are promoted to continuously develop to underground space, corresponding underground foundation pits are dug deeper and deeper, the excavation area is further increased, in addition, house buildings, subways and the like are often arranged around the foundation pits due to reasons of dense building groups, scarce land and the like, the foundation pit site environment and engineering geological conditions are made to be more complex, the types of the foundation pits are more diverse, and therefore the requirements on the safety of a supporting structure, the convenience of construction, technical conditions and the like are higher.
In the related art, collapse easily occurs to the lateral wall of the foundation pit due to poor supporting effect, and collapse accidents are easily caused to the rock-soil layer on the periphery of the foundation pit due to untimely drainage.
Disclosure of Invention
The invention aims to provide a foundation pit supporting system which effectively solves the problem that the side wall of a foundation pit is easy to collapse.
The embodiment of the invention is realized by the following steps: an excavation supporting system, comprising:
the supporting piles are arranged at intervals along the inner peripheral wall of the foundation pit;
the reinforcing piles are arranged in the rock-soil layer on the periphery of the foundation pit, correspond to the supporting piles one by one, and are connected with the supporting piles through threaded connecting pieces so that the reinforcing piles are fixed relative to the supporting piles; and
the water-stopping members are arranged in the rock-soil layer on the periphery of the foundation pit, each water-stopping member is arranged between the two supporting piles, the water-stopping members are obliquely arranged, and the water-stopping members face the bottom of the foundation pit to extend.
In an optional embodiment of the present invention, the foundation pit supporting system further includes:
and each baffle is arranged between two support piles and is detachably connected with the two support piles respectively.
In an optional embodiment of the present invention, each of the support piles is provided with a groove extending along a height direction thereof, at least two sides of the groove are open ends, a rubber member is disposed in the groove, a first end of the baffle plate is inserted into the rubber member of one of the support piles, and a second end of the baffle plate is inserted into the rubber member of the other support pile.
In an optional embodiment of the present invention, the reinforcing pile is provided with a T-shaped groove extending along a height direction thereof, the T-shaped groove corresponds to the support pile, a first end of the threaded connector passes through the support pile and extends into the T-shaped groove, the first end of the threaded connector is provided with a first groove and a second groove which are opposite, and the first groove and the second groove both extend along the height direction of the reinforcing pile;
the foundation pit supporting system further comprises a limiting piece, and when the first end of the threaded connecting piece extends into the T-shaped groove, the limiting piece is inserted into the first groove and the second groove so that the threaded connecting piece is fixed relative to the reinforcing pile.
In an optional embodiment of the present invention, the position limiting member includes:
a first connection portion;
one end of the second connecting part is fixedly connected with the first connecting part and is vertical to the first connecting part; and
the third connecting part is fixedly connected with the other end of the second connecting part and is vertical to the second connecting part, and the first connecting part and the third connecting part are oppositely arranged;
at least part of the first connecting part is used for being plugged in the first groove, and at least part of the third connecting part is used for being plugged in the second groove.
In an alternative embodiment of the present invention, the second end of the threaded connector is provided with an external threaded section, and the external threaded section is provided with a nut matched with the external threaded section, and the nut is located on one side of the support pile far away from the reinforcing pile.
In an optional embodiment of the invention, the foundation pit supporting system further comprises a side slope arranged above the rock-soil layer at the periphery of the foundation pit, and a drainage ditch is arranged above the rock-soil layer at the periphery of the foundation pit and is positioned between the side slope and the foundation pit.
In an optional embodiment of the invention, the water stopping piece is of a plate-shaped structure, one side of the water stopping piece is provided with a plurality of drainage grooves with two open ends, and the drainage grooves are used for draining water in the rock-soil layer to the foundation pit.
In an optional embodiment of the invention, one end of the water stop piece is configured into a sharp point part, and the sharp point part is positioned in the rock-soil layer.
In an optional embodiment of the present invention, the foundation pit supporting system further includes:
the cross beam is arranged between the two opposite support piles and is respectively connected with the two support piles.
The embodiment of the invention has the beneficial effects that: this excavation supporting system's is rational in infrastructure, and it has effectively promoted the support to the foundation ditch lateral wall through continuous support pile and reinforcement pile to avoided the foundation ditch lateral wall to take place to collapse, in addition, through setting up stagnant water spare, can effectively guide the water in the ground layer to the foundation ditch in, in order to avoid the foundation ditch lateral wall to collapse.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a foundation pit supporting system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a support pile and a baffle according to an embodiment of the present invention;
fig. 3 is a partial structural view of a reinforcing pile and a threaded connector according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a limiting member;
fig. 5 is a schematic structural view of a foundation pit supporting system according to another embodiment of the present invention;
fig. 6 is a schematic structural view of a water stop according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of the first view angle of FIG. 6;
fig. 8 is a structural diagram of the second viewing angle of fig. 6.
Icon: 100-foundation pit; 110-side slopes; 120-drainage ditch; 130-reinforcing piles; 131-T type groove; 140-support piles; 141-a groove; 150-a threaded connection; 151-first groove; 152-a second groove; 160-a beam; 170-a baffle plate; 171-a first end; 172-second end; 180-rubber parts; 190-a stop; 191 — a first connection; 192-a second connection; 193-third connecting portion; 200-a water stop; 201-spine part; 202-drainage groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally put in use of products of the present invention, and are only for convenience of description and simplification of description, but do not indicate or imply that the devices or elements referred to must have specific orientations, be constructed in specific orientations, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, the first feature may be present on or under the second feature in direct contact with the first and second feature, or may be present in the first and second feature not in direct contact but in contact with another feature between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.
Referring to fig. 1, an embodiment of the present invention provides a foundation pit supporting system, which includes supporting piles 140, reinforcing piles 130, and a plurality of water-stopping members 200.
The number of the support piles 140 is multiple, the support piles 140 are disposed along the side wall of the foundation pit 100, the plurality of support piles 140 are disposed at intervals, and the support piles 140 may be cast-in-place piles, that is, formed by pouring reinforced concrete.
The reinforcing piles 130 are hollow structures, the upper ends of the reinforcing piles 130 are open ends, the reinforcing piles 130 are arranged in the rock-soil layer on the periphery of the foundation pit 100, the number of the reinforcing piles 130 is equal to that of the support piles 140, each reinforcing pile 130 is arranged opposite to one support pile 140, the distance between each reinforcing pile 130 and the corresponding support pile 140 is preferably within the range of 2-3m, the reinforcing piles 130 are connected with the support piles 140 through threaded connectors 150 to fix the reinforcing piles 130 relative to the support piles 140, it can be understood that the threaded connectors 150 extend into the reinforcing piles 130 from the support piles 140, and the side walls of the foundation pit 100 can be effectively supported through the connected reinforcing piles 130 and support piles 140, so that the supporting effect of the side walls of the foundation pit 100 is improved, and the collapse of the side walls of the foundation pit 100 is avoided.
It should be noted that, in the prefabrication stage, a tubular embedded part can be installed in the radial direction of the support pile 140 to finally form a through hole matched with the threaded connector 150.
It should be noted that the reinforcing pile 130 may be driven into the ground layer by a pile driver.
Referring to fig. 1, the number of the water-stopping members 200 is plural, a part of the water-stopping members 200 is disposed in the rock-soil layer at the periphery of the foundation pit 100, the other part of the water-stopping members 200 is exposed in the foundation pit 100, each water-stopping member 200 is disposed between the two support piles 140, the water-stopping members 200 are disposed in an inclined manner, and the water-stopping members 200 extend toward the bottom of the foundation pit 100, and because the water-stopping members 200 are disposed in an inclined manner, the water-stopping members 200 can guide water in the rock-soil layer into the foundation pit 100, thereby preventing the partial collapse of the side wall of the foundation pit 100 caused by the seepage of the side wall of the. It is understood that a catchment ditch extending along the bottom edge of the sidewall of the foundation pit 100 may be provided at the bottom of the foundation pit 100 to intensively treat the water guided through the water stop 200; the water stop 200 may be made of steel plate.
Referring to fig. 2, in this embodiment, the foundation pit supporting system further includes a plurality of baffles 170, each baffle 170 is disposed between two support piles 140 and detachably connected to two support piles 140, the baffle 170 may be made of a steel plate, the baffle 170 may effectively support the side wall of the foundation pit 100, and prevent the side wall of the foundation pit 100 from locally collapsing, and the baffle 170 may be arc-shaped to improve the supporting effect.
Referring to fig. 2, further, each support pile 140 is provided with a groove 141 extending along the height thereof, the transverse cross section of the groove 141 may be rectangular or approximately circular, at least two sides of the groove 141 are open ends, a rubber member 180 is disposed in the groove 141, the rubber member 180 may be cylindrical, a gap is radially disposed on the rubber member 180, and the gap extends along the height direction of the rubber member 180, that is, the extending direction of the gap of the rubber member 180 is the same as the extending direction of the groove 141, so that the first end 171 of the baffle 170 may be inserted into the rubber member 180 of one support pile 140, the second end 172 of the baffle 170 may be inserted into the rubber member 180 of the other support pile 140, and by respectively inserting the two ends of the baffle 170 into the gaps of the rubber member 180, water seepage in the rock-soil layer may be avoided, thereby preventing local collapse of the side wall of the foundation pit 100; accordingly, at the prefabrication stage, another prefabricated member may be installed in the height direction of the support piles 140, thereby forming the grooves 141 by casting concrete.
Referring to fig. 3 and 4, further, the reinforcing pile 130 is provided with a T-shaped groove 131 extending along a height direction thereof, the T-shaped groove 131 corresponds to the support pile 140, where one open end of the T-shaped groove 131 faces the support pile 140, so that the threaded connector 150 can pass through the support pile 140 and extend into the T-shaped groove 131 of the reinforcing pile 130, in addition, a first end of the threaded connector 150 is provided with a first groove 151 and a second groove 152 which are opposite, the first groove 151 and the second groove 152 are both rectangular in transverse cross-sectional shape, the first groove 151 and the second groove 152 both extend along the height direction of the reinforcing pile 130, and the first groove 151 and the second groove 152 both extend through the threaded connector 150, in this embodiment, the foundation pit supporting system further includes a stopper 190, and when the first end of the threaded connector 150 extends into the T-shaped groove 131, the stopper 190 is inserted into the first groove 151 and the second groove 152 to prevent the threaded connector 150 from moving towards the 100 direction And the screw connector 150 is movably, i.e., so that it can be fixed with respect to the reinforcing piles 130. It can be appreciated that when the threaded connector 150 extends into the T-shaped groove 131, since the upper portion of the reinforcing pile 130 is an open end, the position-limiting member 190 can be inserted into the upper end of the reinforcing pile 130, so that the position-limiting member 190 is inserted into the first groove 151 and the second groove 152, and the threaded connector 150 is fixed relative to the reinforcing pile 130, so that the reinforcing pile 130 can apply a pulling force to the supporting pile 140 to keep the position of the supporting pile 140 unchanged, and thus the side wall of the foundation pit 100 can be better supported; the screw connector 150 may be made of a screw rod, or a steel bar and a thread is formed thereon.
Optionally, the position-limiting member 190 includes a first connecting portion 191, a second connecting portion 192, and a third connecting portion 193, wherein one end of the second connecting portion 192 is fixedly connected to the first connecting portion 191 and perpendicular to the first connecting portion 191, the third connecting portion 193 is fixedly connected to the other end of the second connecting portion 192 and perpendicular to the second connecting portion 192, and the first connecting portion 191 and the third connecting portion 193 are disposed opposite to each other, in other words, the position-limiting member 190 has a substantially U-shaped structure, so that a portion of the first connecting portion 191 can be used to be inserted into the first groove 151, and a portion of the third connecting portion 193 can be used to be inserted into the second groove 152, so that the threaded connecting member 150 is fixed relative to the reinforcing pile 130. The position limiting member 190 can be made of a steel plate through shearing, so that the production cost is reduced, and accordingly, the first connecting portion 191, the second connecting portion 192 and the third connecting portion 193 are of an integrally formed structure, so that the structural stability of the position limiting member 190 is improved.
Referring to fig. 5, in the present embodiment, the second end of the threaded connector 150 is provided with an external threaded section, and the external threaded section is provided with a nut matched with the external threaded section, it can be understood that, when the threaded connector 150 passes through the support pile 140 and extends into the reinforcing pile 130, a part of the external threaded section of the threaded connector 150 is exposed outside the support pile 140, and the nut is located on a side of the support pile 140 far away from the reinforcing pile 130 and is in threaded connection with the external threaded section, and the external threaded section is locked on the support pile 140 by the nut, so that the threaded connector 150 can be further fixed relative to the reinforcing pile 130, thereby enhancing the connection stability between the reinforcing pile 130 and the support pile 140.
It should be noted that the threaded connection members 150 may be disposed in the middle of the support piles 140, and a plurality of threaded connection members 150 may be disposed on each support pile 140, and the plurality of threaded connection members 150 may be spaced apart along the height direction of the support pile 140.
Referring to fig. 1, in this embodiment, the foundation pit supporting system further includes a side slope 110 disposed above the rock-soil layer at the periphery of the foundation pit 100, a drainage ditch 120 is disposed above the rock-soil layer at the periphery of the foundation pit 100, the drainage ditch 120 is located between the side slope 110 and the foundation pit 100, and rainwater flowing down along the side slope 110 can be collected by disposing the drainage ditch 120, so that the rainwater at the periphery of the foundation pit 100 is prevented from entering the foundation pit 100; in general, the foundation pit 100 is substantially rectangular, and accordingly, the gutters 120 are also arranged in a rectangular shape, that is, the gutters 120 are disposed along the periphery of the foundation pit 100.
Referring to fig. 6, 7 and 8, in this embodiment, the water stop member 200 is a plate-shaped structure, one side of the water stop member 200 is provided with a plurality of drainage grooves 202 with two open ends, the drainage grooves 202 are used for guiding water in a rock-soil layer into the foundation pit 100, one end of the water stop member 200 is configured into a spike portion 201, the spike portion 201 is located in the rock-soil layer, and during installation, the spike portion 201 firstly enters the side wall of the foundation pit 100, so that most parts of the water stop member 200 can be quickly inserted into the side wall of the foundation pit 100.
Referring to fig. 1, in the embodiment, the foundation pit supporting system further includes a plurality of cross beams 160, the cross beams 160 are disposed between the two opposite supporting piles 140 and are respectively connected to the two supporting piles 140, and the cross beams 160 can enhance the stability between the supporting piles 140 so as to keep the supporting piles 140 fixed; the cross member 160 may be formed of i-steel.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. An excavation supporting system, comprising:
the supporting piles are arranged at intervals along the inner peripheral wall of the foundation pit;
the reinforcing piles are arranged in the rock-soil layer on the periphery of the foundation pit, correspond to the supporting piles one by one, and are connected with the supporting piles through threaded connecting pieces so that the reinforcing piles are fixed relative to the supporting piles; and
at least part of the water-stopping pieces are arranged in a rock-soil layer on the periphery of the foundation pit, each water-stopping piece is arranged between two support piles, the water-stopping pieces are obliquely arranged, and the water-stopping pieces extend towards the bottom of the foundation pit;
the reinforcing pile is provided with a T-shaped groove extending along the height direction of the reinforcing pile, the T-shaped groove corresponds to the support pile, the first end of the threaded connecting piece penetrates through the support pile and extends into the T-shaped groove, the first end of the threaded connecting piece is provided with a first groove and a second groove which are opposite, and the first groove and the second groove both extend along the height direction of the reinforcing pile;
the foundation pit supporting system further comprises a limiting piece, and when the first end of the threaded connecting piece extends into the T-shaped groove, the limiting piece is inserted into the first groove and the second groove so that the threaded connecting piece is fixed relative to the reinforcing pile;
the stopper includes:
a first connection portion;
one end of the second connecting part is fixedly connected with the first connecting part and is vertical to the first connecting part; and
the third connecting part is fixedly connected with the other end of the second connecting part and is vertical to the second connecting part, and the first connecting part and the third connecting part are oppositely arranged;
at least part of the first connecting part is used for being plugged in the first groove, and at least part of the third connecting part is used for being plugged in the second groove.
2. The excavation supporting system of claim 1, further comprising:
and each baffle is arranged between two support piles and is detachably connected with the two support piles respectively.
3. The foundation pit supporting system according to claim 2, wherein each of the supporting piles is provided with a groove extending in a height direction thereof, at least two sides of the groove are open ends, a rubber member is disposed in the groove, a first end of the baffle plate is inserted into the rubber member of one of the supporting piles, and a second end of the baffle plate is inserted into the rubber member of the other supporting pile.
4. The excavation supporting system of claim 1, wherein the second end of the threaded connector is provided with an externally threaded section and the externally threaded section is provided with a nut engaged therewith, the nut being located on a side of the support pile remote from the reinforcing pile.
5. The excavation supporting system of claim 1, further comprising a side slope disposed above the geotechnical layer surrounding the excavation, wherein a drainage ditch is disposed above the geotechnical layer surrounding the excavation between the side slope and the excavation.
6. The foundation pit supporting system according to claim 1, wherein the water-stopping member is a plate-shaped structure, and one side of the water-stopping member is provided with a plurality of water drainage grooves with two open ends, and the water drainage grooves are used for draining water in a rock-soil layer into the foundation pit.
7. The excavation supporting system of claim 6, wherein one end of the water stop is configured as a spike and the spike is positioned within the geotechnical layer.
8. The excavation supporting system of claim 1, further comprising:
the cross beam is arranged between the two opposite support piles and is respectively connected with the two support piles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910301177.8A CN109914447B (en) | 2019-04-15 | 2019-04-15 | Foundation pit supporting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910301177.8A CN109914447B (en) | 2019-04-15 | 2019-04-15 | Foundation pit supporting system |
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| Publication Number | Publication Date |
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| CN109914447A CN109914447A (en) | 2019-06-21 |
| CN109914447B true CN109914447B (en) | 2021-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910301177.8A Active CN109914447B (en) | 2019-04-15 | 2019-04-15 | Foundation pit supporting system |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6187016A (en) * | 1984-10-03 | 1986-05-02 | Masahide Nagahara | Sheathing work by steel sheet pile |
| CN201873997U (en) * | 2010-11-24 | 2011-06-22 | 温州中城建设集团有限公司 | Support structure of foundation pit |
| CN204311459U (en) * | 2014-11-13 | 2015-05-06 | 常州大学 | Oblique double soldier pile body structure before chair shape |
| CN205012352U (en) * | 2015-09-30 | 2016-02-03 | 常州大学怀德学院 | Sheet pile supporting construction with stagnant water function |
| CN105133624A (en) * | 2015-09-30 | 2015-12-09 | 贵州正业工程技术投资有限公司 | Double-row pile support structure |
| CN207193986U (en) * | 2017-07-25 | 2018-04-06 | 北京航天地基工程有限责任公司 | Pattern foundation pit supporting structure plate, branch protecting assembly and foundation pit support system |
| CN208501692U (en) * | 2018-06-25 | 2019-02-15 | 苏州市民用建筑设计院有限责任公司 | A kind of waterproof foundation pit |
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Inventor after: Hu Changjun Inventor after: Hu Minmin Inventor after: Chen Lin Inventor before: Hu Minmin Inventor before: Chen Lin |
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Effective date of registration: 20210319 Address after: 330213 28 Zhelin street, Tangnan Town, Nanchang County, Nanchang, Jiangxi Applicant after: CHANGJIAN CONSTRUCTION GROUP Co.,Ltd. Address before: 222111 No.37, team 2, Yihe village, Haitou Town, Ganyu District, Lianyungang City, Jiangsu Province Applicant before: Chen Lin |
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