CN213709560U - Foundation pit supporting system with drainage structure - Google Patents
Foundation pit supporting system with drainage structure Download PDFInfo
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- CN213709560U CN213709560U CN202022397050.1U CN202022397050U CN213709560U CN 213709560 U CN213709560 U CN 213709560U CN 202022397050 U CN202022397050 U CN 202022397050U CN 213709560 U CN213709560 U CN 213709560U
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Abstract
The utility model provides a foundation pit supporting system with a drainage structure, wherein a foundation pit is positioned at the periphery of a building; the annular drainage ditch is arranged in the foundation pit and is positioned on the periphery of the building; the water collecting well is arranged in the foundation pit, is communicated with the annular drainage ditch, is communicated with a municipal pipe network and is used for discharging water in the annular drainage ditch; a plurality of fender piles are followed annular escape canal inboard is row form and arranges and stretch into the foundation ditch bottom, the top of fender pile is located escape canal top, and is a plurality of the fender pile top is connected through the guan liang, is located foundation ditch between fender pile and the building is the formula of putting the slope and sets up the formation side slope. The utility model provides a technical scheme's beneficial effect is: the soil stability of the side of the building can be well guaranteed, accumulated water can be effectively discharged out of the foundation pit for a long time, the foundation pit supporting structure is prevented from water seepage, and the waterproof structure has the advantages of being high in strength and strong in waterproof capability.
Description
Technical Field
The utility model relates to a building construction technical field especially relates to a foundation ditch supporting system with drainage structures.
Background
People build a large number of buildings for living and living needs, but for various reasons, the buildings incline due to uneven settlement in the building or use process of some buildings, other structures are built around some buildings, and in order to avoid threat to the buildings in the adjacent areas in the soil pumping and deviation rectifying process, foundation pits need to be arranged on the periphery of the buildings to provide a construction environment.
The foundation pit support is a supporting, retaining, reinforcing and protecting measure adopted for the side wall of the foundation pit and the surrounding environment in order to ensure the safety of the underground structure construction and the surrounding environment of the foundation pit, and the conventional engineering foundation pit support is used as a structure for controlling the deformation of the foundation pit.
SUMMERY OF THE UTILITY MODEL
In view of the above, to solve the above problems, embodiments of the present invention provide an excavation supporting system with a drainage structure.
An embodiment of the utility model provides a foundation ditch supporting system with drainage structures, include:
the foundation pit is positioned on the periphery of the outside of the building;
the annular drainage ditch is arranged in the foundation pit and is positioned on the periphery of the building;
the water collecting well is arranged in the foundation pit, is communicated with the annular drainage ditch, is communicated with a municipal pipe network and is used for discharging water in the annular drainage ditch;
a plurality of fender piles, follow annular escape canal inboard is row form and arranges and stretch into the foundation ditch bottom, the top of fender pile is located escape canal top, and is a plurality of the fender pile top is connected through the guan liang, is located foundation ditch between fender pile and the building is the formula of putting the slope and sets up the formation side slope.
Further, the side slope is the step setting, the side slope top is equipped with the escape canal.
Further, the bottom wall of the drainage ditch is obliquely arranged.
Further, the drain bottom wall and the side walls are cast of concrete.
Further, the drainage ditch is the trapezoidal setting of falling on the cross-section.
Further, the angle between the drain side wall and the drain bottom wall is 100 DEG and 150 deg.
Further, the sump pit bottom is the concrete cushion, and the lateral wall encloses by the brick that the brick formed and keeps off, the brick encloses to keep off the inside wall and is equipped with one deck cement mortar surface course, the brick encloses to keep off the top and is equipped with the concrete surface course.
Furthermore, the drainage ditch is communicated with a plurality of water collecting pits arranged at intervals, a water pump is arranged in each water collecting pit and used for pumping water in the water collecting pits into the drainage ditch.
Furthermore, the concrete surface layer comprises a plurality of soil nails, a steel wire mesh and a concrete surface layer;
the soil nails are arranged at intervals, one end of each soil nail is inserted into the side slope, and the other end of each soil nail is positioned in the foundation pit; the steel wire mesh comprises a plurality of reinforcing ribs which are arranged in a crossed mode, the reinforcing ribs are bundled through steel wires, the steel wire mesh is laid on the top of the side slope, and the steel wire mesh is fixedly connected with the position, opposite to the other end of the soil nail, of the steel wire mesh; the concrete surface layer is formed by spraying concrete onto the wire mesh.
Furthermore, the concrete surface layer at the bottom of the side slope penetrates through the through holes arranged at a plurality of intervals, the water inlet ends of the water outlet pipes are inserted into the through holes and are positioned in the soil layer of the side slope, and the water outlet ends of the water outlet pipes are arranged obliquely downwards.
The embodiment of the utility model provides a beneficial effect that technical scheme brought is: the top end of the supporting pile is provided with the crown beam, so that the connection strength between the supporting piles can be improved by the crown beam, and the overall stability of the whole supporting pile can be ensured. A plurality of support piles are arranged on the periphery of a building in a row shape, the support piles are arranged between the building and the support piles in a slope-making mode, the support strength of a foundation pit on one side of the building can be enhanced, the support piles can bear soil pressure, water pressure and upper load to strengthen balance and stability of the foundation pit, and soil stability on the side edge of the building can be well guaranteed. When ponding exists in the foundation ditch, the ponding flows to the escape canal through the side slope, collects the sump pit by the escape canal again, discharges the foundation ditch at last to realize discharging ponding outside the foundation ditch effectively for a long time, prevent that the excavation supporting structure from taking place the infiltration phenomenon, have the characteristics that intensity is high and waterproof ability is strong.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of an excavation supporting system with a drainage structure provided by the present invention;
FIG. 2 is a schematic partial cross-sectional view of the excavation retaining system of FIG. 1 with a drainage structure;
fig. 3 is a schematic structural view of the cast-in-place pile of fig. 1;
FIG. 4 is a schematic cross-sectional view of the cast-in-place pile of FIG. 1;
FIG. 5 is a schematic view of the drain of FIG. 1;
fig. 6 is a schematic view of the sump of fig. 1.
In the figure: the water collecting device comprises a building 1, a drainage ditch 2, a bottom wall 21, a side wall 22, a water collecting well 3, a concrete cushion layer 31, a brick fence 32, a cement mortar surface layer 33, a concrete layer 34, a support pile 4, an inner row pile 41, an outer row pile 42, a crown beam 5, a side slope 6, a soil nail 7, a splicing part 71, a connecting part 72, a reinforcing mesh 8, a concrete surface layer 9, a powder spraying pile 10, a steel reinforcement framework 11, a main reinforcement 11a, a spiral stirrup 11b, a reinforcing stirrup 11c, a top water collecting pit 12, a water outlet pipe 13, a top drainage ditch 14 and a water collecting well 15.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be further described below with reference to the accompanying drawings.
Referring to fig. 1 to 6, an embodiment of the present invention provides a foundation pit support system for a building having a structure adjacent to one side thereof, including a foundation pit, an annular drainage ditch 2, a sump 3, and a plurality of support piles 4.
The foundation pit is positioned on the outdoor periphery of the building 1, and the annular drainage ditch 2 is arranged in the foundation pit and positioned on the periphery of the building 1; a plurality of water collecting pits 3 are arranged in the foundation pit and communicated with the annular drainage ditch 2; a plurality of fender pile 4 are followed 2 outsides in annular escape canal are row form and arrange and stretch into the foundation ditch bottom, the top of fender pile 4 is located 2 tops in annular escape canal, it is a plurality of 4 tops of fender pile are connected through hat roof beam 5, are located the outside foundation ditch of fender pile 4 is the formula of putting the slope and sets up.
Through set up crown beam 5 at the top of a fender pile 4, crown beam 5 can improve the joint strength between a fender pile 4, can guarantee the overall stability of whole fender pile 4. A plurality of support piles 4 are arranged on the periphery of the building 1 in a row shape, the outer sides of the support piles 4 are arranged in a slope-making mode, the support strength of foundation pits on the periphery of the building 1 can be enhanced, the balance and the stability of the foundation pits can be enhanced by bearing the soil pressure, the water pressure and the upper load, and the stability of the soil on the side edge of the building 1 can be well guaranteed. When there is ponding in the foundation ditch, ponding flows to annular escape canal 2 through side slope 6, collects sump pit 3 by annular escape canal 2 again, and the foundation ditch of discharging at last to realize discharging ponding outside the foundation ditch effectively for a long time, prevent that the excavation supporting structure from taking place the infiltration phenomenon, have intensity height and waterproof ability reinforce's characteristics.
The side slope 6 is arranged in a step manner, so that collapse of vertical wall soil can be avoided, and a top drainage ditch 14 is arranged at the top of the side slope 6, so that external water is prevented from flowing into a foundation pit (see fig. 2). The top drainage ditch 14 is communicated with a water collecting well 15, and the water collecting well 15 is communicated with a municipal pipe network and used for discharging water in the top drainage ditch 14. The diapire 21 of top escape canal 14 is the slope setting, and understandably, escape canal 2 is more close to the municipal pipe network, and highly lower, and the water in the top escape canal 14 is at the reverse flow of gravity effect to the municipal pipe network, the discharge of the water in the top escape canal 14 of being convenient for, and can understand, two sump pit 15 in figure 1 highly minimum, and the arrow direction is the rivers direction. If 14 diapire 21 inclination in top escape canal is too big, the flow velocity of water is too big in the top escape canal 14, can spill the top escape canal 14 outside, flows to in the foundation ditch, 14 diapire 21's in the top escape canal inclination is 3-7%, can guarantee to avoid the flow velocity of water too big in the top escape canal 14 when 14 interior water of top escape canal are mobile, in this embodiment, 14's in the top escape canal inclination is 5%.
Referring to fig. 5, the bottom wall 21 and the side wall 22 of the annular drainage ditch 2 and the top drainage ditch 14 are made of concrete by casting, so that the construction is convenient. Annular escape canal 2 and top escape canal 14 are the trapezoidal setting of falling on the cross-section, and ponding can slowly flow down along annular escape canal 2 and top escape canal 14's lateral wall 22. If the angle α between the side wall 22 and the bottom wall 21 of the annular drainage ditch 2 and the top drainage ditch 14 is too small, the accumulated water is easy to splash when flowing into the annular drainage ditch 2 and the top drainage ditch 14, and if the angle α between the side wall 22 and the bottom wall 21 is too large, the area occupied by the annular drainage ditch 2 and the top drainage ditch 14 is large, so the angle between the side wall 22 and the bottom wall 21 of the annular drainage ditch 2 and the top drainage ditch 14 is 100 and 150 degrees, and in this embodiment, the angle between the side wall 22 and the bottom wall 21 is 120 degrees. The width on annular escape canal 2 and top escape canal 14 upper portion is 20-350mm, and in this embodiment, the width on annular escape canal 2 and top escape canal 14 upper portion is 300mm, the degree of depth of annular escape canal 2 and top escape canal 14 is 300 mm.
Referring to fig. 2, in order to avoid slippage of soil on the side slope 6, a plurality of soil nails 7 are arranged at intervals, one end of each soil nail is inserted into the side slope 6, and the other end of each soil nail is located in the foundation pit; the reinforcing mesh 8 comprises a plurality of reinforcing ribs which are arranged in a crossed manner, the reinforcing ribs are bundled by steel wires, the reinforcing mesh 8 is laid on the top of the side slope 6, and the reinforcing mesh 8 is fixedly connected with the opposite position of the other end of the soil nail 7; the concrete surface 9 is formed by spraying concrete onto the reinforcing mesh 8. Can fix reinforcing bar net 8 on side slope 6 through soil nail 7, then spray a layer of concrete surface course 9 on reinforcing bar net 8 surface, strengthened the structural stability of side slope 6 greatly, can avoid simultaneously that the rivers in the side slope 6 soil horizon are gone into the foundation ditch and are influenced the construction.
Soil nail 7 is the T setting that appears, including grafting portion 71 and with grafting portion 71 end connection's connecting portion 72, grafting portion 71 pegs graft in side slope 6, connecting portion 72 with reinforcing bar net 8 fixed connection can also be fixed through the steel wire through the welding, through being provided with connecting portion 72, is convenient for fix soil nail 7 and reinforcing bar net 8.
The insertion part 71 is provided with external threads, so that the friction force between the insertion part 71 and the soil layer in the side slope 6 can be increased, and the strength of the soil nails 7 fixed in the soil layer is enhanced; the outer side wall of the connecting part 72 is provided with external threads, if the connecting part 72 and the reinforcing mesh 8 are fixedly connected through connecting pieces such as steel wires, the connecting pieces such as the steel wires can be clamped between adjacent grains of the external threads, and the fixing strength of the connecting part 72 and the reinforcing mesh 8 is enhanced.
Referring to fig. 2, the support piles 4 are double-row piles, and include outer row piles 42 and inner row piles 41 located between the outer row piles 42 and the annular drainage ditch 2, and the tops of the inner row piles 41 and the outer row piles 42 are connected through the crown beams 5, so that the strength of the support piles 4 can be enhanced, and the support strength of the foundation pit can be enhanced. Further, the inner row piles 41 and the outer row piles 42 are connected through the powder-injection piles 10 in a reinforcing manner, so that the connection strength between the outer row piles 42 and the inner row piles 41 can be enhanced, and the strength of the support piles 4 can be enhanced. The building 1 adopts a mode of pile top slope putting, double-row pile or cantilever row pile supporting and inter-pile powder spraying pile 10 reinforcing supporting.
The support piles 4 can be channel steel sheet piles, powder-jet piles and the like, and in the embodiment, the support piles 4 are cast-in-place piles. Referring to fig. 4 and 5, a steel reinforcement framework 11 is arranged in the cast-in-place pile, and includes a plurality of main reinforcements 11a, a spiral stirrup 11b fixed outside the main reinforcements 11a, and a plurality of stiffening stirrups 11 c; it is a plurality of main muscle 11a is located along vertical extension in the bored concrete pile, and wind bored concrete pile circumference interval sets up, and is a plurality of stiffening stirrup 11c is cyclic annular setting, is fixed in to the interval from top to bottom main muscle 11a is inboard, the density of spiral stirrup 11b upper end is the biggest, and the density of lower extreme is minimum, can strengthen the intensity and the bearing capacity that can bear of bored concrete pile.
Referring to fig. 2, the concrete surface layer 9 at the bottom of the side slope 6 is provided with a plurality of through holes (not labeled) arranged at intervals, water inlet ends of a plurality of water outlet pipes 13 are inserted into the through holes and located in the soil layer of the side slope 6, the water outlet pipes 13 are PVC pipes, and water outlet ends of the water outlet pipes 13 are arranged obliquely downwards, so that water in the soil layer of the side slope 6 can be discharged, the concrete surface layer 9 is prevented from being extruded by excessive water in the soil layer of the side slope 6, and water in the foundation pit is treated by adopting a method of open trench drainage and buried pipe drainage at the same time. Specifically, the distance between two adjacent water outlet pipes 13 is 7-10m, so that the water discharge efficiency in the soil layer of the side slope 6 can be ensured, and the waste caused by too many arranged water outlet pipes 13 can be avoided at the same time, in this embodiment, the distance between two adjacent water outlet pipes 13 is 8 m.
Referring to fig. 6, the bottom of the water collecting well 15 is a concrete cushion 31 with a thickness of 10cm, the strength of concrete is C15, the side wall 22 is a brick enclosure 32 formed by bricks, the inner side wall 22 of the brick enclosure 32 is provided with a cement mortar surface layer 33, the top of the brick enclosure 32 is provided with a concrete layer 34, and the strength of concrete in the concrete layer 34 is C20, so that the construction is simple.
In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.
The features of the embodiments and embodiments described herein above may be combined with each other without conflict.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (10)
1. A foundation pit support system with a drainage structure, comprising:
the foundation pit is positioned on the periphery of the outside of the building;
the annular drainage ditch is arranged in the foundation pit and is positioned on the periphery of the building;
the plurality of water collecting pits are arranged in the foundation pit and are communicated with the annular drainage ditch;
a plurality of fender piles follow the annular escape canal outside is row form and arranges and stretch into the foundation ditch bottom, the top of fender pile is located annular escape canal top, and is a plurality of the fender pile top is connected through the guan liang, is located the outside foundation ditch of fender pile is the formula of putting the slope and sets up the formation side slope.
2. The system of claim 1, wherein the side slope is stepped, and top drainage gutters are provided at the top of the side slope, and the top drainage gutters are communicated with a water collecting well, and the water collecting well is communicated with a municipal pipe network and is used for discharging water in the top drainage gutters.
3. A foundation pit supporting system with a drainage structure as claimed in claim 2, wherein the bottom of the water collecting well is a concrete cushion, the side wall of the water collecting well is a brick enclosure formed by bricks, the inner side wall of the brick enclosure is provided with a cement mortar surface layer, and the top of the brick enclosure is provided with a concrete surface layer.
4. A drainage system as claimed in claim 2 wherein the annular drainage ditch is connected to a plurality of spaced apart sumps, each sump having a pump therein for pumping water from the sump into the roof drain.
5. A retaining and/or excavation system as claimed in claim 4, wherein the bottom wall of the top drain is inclined.
6. A foundation pit support system with drainage structures as claimed in claim 4, wherein the bottom and side walls of the annular and top drains are cast of concrete.
7. A foundation pit support system with drainage structure as claimed in claim 6, wherein the annular drainage ditch and the top drainage ditch are arranged in inverted trapezium shape in cross section.
8. The excavation support system with a drainage structure of claim 7, wherein the angle between the side walls and the bottom wall of the annular drain and the top drain is 100 ° and 150 °.
9. A foundation pit support system with a drainage structure as claimed in claim 1, further comprising a plurality of soil nails, steel wire mesh and concrete surface course;
the soil nails are arranged at intervals, one end of each soil nail is inserted into the side slope, and the other end of each soil nail is positioned in the foundation pit; the steel wire mesh comprises a plurality of reinforcing ribs which are arranged in a crossed mode, the reinforcing ribs are bundled through steel wires, the steel wire mesh is laid on the top of the side slope, and the steel wire mesh is fixedly connected with the position, opposite to the other end of the soil nail, of the steel wire mesh; the concrete surface layer is formed by spraying concrete onto the wire mesh.
10. The system of claim 9, wherein the concrete surface layer of the bottom of the side slope is provided with a plurality of spaced through holes, water inlet ends of a plurality of water outlet pipes are inserted into the through holes and positioned in the soil layer of the side slope, and the water outlet ends of the water outlet pipes are arranged obliquely downwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022397050.1U CN213709560U (en) | 2020-10-23 | 2020-10-23 | Foundation pit supporting system with drainage structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022397050.1U CN213709560U (en) | 2020-10-23 | 2020-10-23 | Foundation pit supporting system with drainage structure |
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| Publication Number | Publication Date |
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| CN213709560U true CN213709560U (en) | 2021-07-16 |
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| CN202022397050.1U Active CN213709560U (en) | 2020-10-23 | 2020-10-23 | Foundation pit supporting system with drainage structure |
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| CN (1) | CN213709560U (en) |
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- 2020-10-23 CN CN202022397050.1U patent/CN213709560U/en active Active
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