CN211713976U - Large-span foundation pit supporting structure - Google Patents
Large-span foundation pit supporting structure Download PDFInfo
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- CN211713976U CN211713976U CN201922200219.7U CN201922200219U CN211713976U CN 211713976 U CN211713976 U CN 211713976U CN 201922200219 U CN201922200219 U CN 201922200219U CN 211713976 U CN211713976 U CN 211713976U
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Abstract
The utility model discloses a large-span underground structure, including support column, first backup pad, second backup pad and slope floor, the support column symmetry is provided with four groups, and four groups the support column all sets up perpendicularly, and is horizontal adjacent two sets of the symmetry is provided with two sets of first backup pads between the support column, and is vertical adjacent two sets of equal symmetry is provided with two sets of second backup pads between the support column, just first backup pad and second backup pad surround and are the rectangle structure, and are two sets of the rectangle mounting groove has been seted up to the equal symmetry in the relative side of second backup pad, and is two sets of all vertically be provided with the lead screw through the bearing in the rectangle mounting groove, second backup pad top end face intermediate position all is provided with two sets of rotary rods, and is two sets of the rotary rod all runs. This large-span foundation ditch supporting construction, the side slope of the foundation ditch of being convenient for is fixed, prevents that the foundation ditch side slope is not hard up, and can increase and support the lifting surface area, reduces cracked occurence of failure.
Description
Technical Field
The utility model belongs to the technical field of the excavation supporting, concretely relates to large-span excavation supporting construction.
Background
The foundation pit is a soil pit excavated at the design position of the foundation according to the elevation of the foundation and the plane size of the foundation. Before excavation, an excavation scheme is determined according to geological and hydrological data and the conditions of buildings nearby the site, and waterproof drainage work is performed. The persons with low excavation depth can use the method of putting side slope to make the earth slope stable, and the size of the slope is determined according to the relevant construction project. When a deeper foundation pit and a building adjacent to the deeper foundation pit are excavated, a foundation pit wall supporting method, a concrete-sprayed wall protecting method and a large foundation pit are used, and even an underground continuous wall and a columnar column type bored pile are used for interlocking, so that an outer soil layer is prevented from collapsing; for those who have no influence on nearby buildings, the underground water level can be reduced by a well point method, and slope releasing open cut is adopted; in cold regions, natural cold freezing method can be adopted for excavation and the like.
The construction quality of the deep foundation pit is the function of the foundation stone in the building engineering, the existing foundation pit must be well supported, and the support plate is adopted for reinforcement in a large number, but the mode is simple, the structure is single, the reinforcement effect on the foundation pit side slope is poor, and the side slope is easy to loosen.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a large-span underground structure to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a large-span foundation pit supporting structure comprises supporting columns, first supporting plates, second supporting plates and inclined rib plates, wherein four groups of supporting columns are symmetrically arranged, the four groups of supporting columns are vertically arranged, two groups of first supporting plates are symmetrically arranged between two groups of transversely adjacent supporting columns, two groups of second supporting plates are symmetrically arranged between two groups of longitudinally adjacent supporting columns, the first supporting plates and the second supporting plates are surrounded to form a rectangular structure, rectangular mounting grooves are symmetrically formed in opposite side surfaces of the two groups of second supporting plates, lead screws are longitudinally arranged in the two groups of rectangular mounting grooves through bearings, two groups of rotary rods are arranged in the middle of the top end surface of the second supporting plate, the two groups of rotary rods penetrate through the rectangular mounting grooves, and conical gears are fixedly sleeved at one ends of the rotary rods and the polished rods of the lead screws, the two groups of bevel gears are meshed with each other and connected, inserting grooves are symmetrically formed in the middle of the opposite side faces of the two groups of first supporting plates, inclined rib plates are connected to the peripheral sides of the screw rods in a threaded mode, and the other ends of the inclined rib plates are connected with the inserting grooves.
Preferably, the two groups of insertion grooves are positioned in the first support plate and communicated with each other in a penetrating manner, the first support plate is internally provided with a fixed plate positioned in the insertion grooves communicated with each other in a penetrating manner, two groups of concave grooves are symmetrically formed in one side surface of the fixed plate, and fixed convex points matched with the concave grooves for use are arranged at one ends of the two groups of inclined rib plates positioned in the insertion grooves.
Preferably, the vertical reinforcing plate that is provided with of second backup pad inner wall intermediate position, just the reinforcing plate passes through the bolt respectively with two sets of second backup pad thread fixed mounting, two sets of a reinforcing plate side just is located screw thread through connection between two sets of second backup pads has the stock, and is two sets of the stock other end all extends to in the foundation ditch slope.
Preferably, four groups N group rectangular channels have all been seted up to support column week side, and dock respectively in N group rectangular channels with first backup pad and second backup pad fixed connection, just the support column all through fastening bolt respectively with first backup pad and second backup pad thread fixed mounting.
Preferably, one end of the inclined ribbed plate, which is close to the screw rod, is provided with a thread connecting sleeve, and the thread connecting sleeve is in threaded connection with the screw rod.
The utility model discloses a technological effect and advantage: according to the large-span foundation pit supporting structure, the rotary rod, the conical gear, the lead screw, the inclined rib plate and the inserting groove are arranged, the rotary rod drives the conical gear to be meshed and connected, the lead screw is driven to rotate in the rectangular installing groove, one end of the inclined rib plate moves on the lead screw, the other end of the inclined rib plate is inserted in the rectangular installing groove to support and fix the first supporting plate, the side slope of a foundation pit is convenient to fix, and the side slope of the foundation pit is prevented from loosening; by arranging the inserting groove, the fixing plate and the fixing salient points, the inclined rib plate drives the fixing salient points to fix the fixed points in the concave grooves of the fixing plate, so that the fixing plate supports the first supporting plate, the supporting stress area is increased, and the occurrence of fracture accidents is reduced; by arranging the reinforcing plate and the anchor rod, the anchor rod extends into the side slope of the foundation pit, so that the reinforcing plate carries out protective support on the second supporting plate and prevents the second supporting plate from being broken; this large-span foundation ditch supporting construction, the side slope of the foundation ditch of being convenient for is fixed, prevents that the foundation ditch side slope is not hard up, and can increase and support the lifting surface area, reduces cracked occurence of failure.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a lead screw according to the present invention;
fig. 3 is a schematic view of the first support plate of the present invention.
In the figure: the device comprises a support column 1, a first support plate 2, a second support plate 3, an inclined ribbed plate 4, a rectangular mounting groove 5, a lead screw 6, a rotating rod 7, an insertion groove 8, a fastening bolt 9, a reinforcing plate 10, an anchor rod 11, a conical gear 12, a fixing plate 13, a fixing salient point 14 and a thread connecting sleeve 15.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides a large-span foundation pit supporting structure as shown in figures 1-3, which comprises supporting columns 1, first supporting plates 2, second supporting plates 3 and inclined rib plates 4, wherein four groups of supporting columns 1 are symmetrically arranged, four groups of supporting columns 1 are vertically arranged, two groups of first supporting plates 2 are symmetrically arranged between two groups of supporting columns 1 which are horizontally adjacent, two groups of second supporting plates 3 are symmetrically arranged between two groups of supporting columns 1 which are vertically adjacent, the first supporting plates 2 and the second supporting plates 3 are enclosed to form a rectangular structure, rectangular mounting grooves 5 are symmetrically arranged on one side surface which is opposite to two groups of second supporting plates 3, lead screws 6 are longitudinally arranged in the two groups of rectangular mounting grooves 5 through bearings, two groups of rotary rods 7 are arranged at the middle positions of the top end surfaces of the second supporting plates 3, and the two groups of rotary rods 7 are penetrated into the rectangular mounting grooves 5, and the one end of rotary rod 7 and the polished rod department of lead screw 6 all fixedly cup jointed conical gear 12, and are two sets of conical gear 12 intermeshing connects, and is two sets of inserting groove 8 has been seted up to the equal symmetry in a side intermediate position that first backup pad 2 is relative, lead screw 6 week side threaded connection has inclined floor 4, just inclined floor 4's the other end is connected with inserting groove 8, and rotary rod 7 drives conical gear 12 meshing and connects, drives lead screw 6 at 5 rotations of rectangle mounting groove for 4 one end of inclined floor moves on lead screw 6, and the other end is pegged graft and is supported fixedly to first backup pad 2 in rectangle mounting groove 5, and the side slope of the foundation ditch of being convenient for is fixed.
Specifically, two sets of inserting groove 8 is located first backup pad 2 to run through and communicate with each other, be located in first backup pad 2 and be provided with fixed plate 13 in running through communicating inserting groove 8, two sets of concave grooves have been seted up to fixed plate 13 a side symmetry, and are two sets of inclined floor 4 is located the one end of inserting groove 8 and is provided with the fixed bump 14 that uses with the concave groove cooperation, and inclined floor 4 drives fixed bump 14 and fixes at the concave inslot fixed point of fixed plate 13 for fixed plate 13 supports first backup pad 2, increases and supports the lifting surface area, reduces cracked occurence of failure.
Specifically, 3 inner wall intermediate positions of second backup pad are vertical to be provided with reinforcing plate 10, just reinforcing plate 10 passes through the bolt respectively with two sets of 3 thread fixing installations of second backup pad, and is two sets of 10 a side of reinforcing plate just is located screw thread through connection between two sets of second backup pads 3 and is had stock 11, and is two sets of in the stock 11 other end all extends to the foundation ditch slope, in stock 11 extends to the foundation ditch side slope for reinforcing plate 10 protects second backup pad 3 and supports, prevents that second backup pad 3 from splitting.
Specifically, four groups 1 week side of support column has all been seted up N group's rectangular channels, and docks respectively in N group's rectangular channels with first backup pad 2 and 3 fixed connection of second backup pad, just support column 1 all through fastening bolt 9 respectively with first backup pad 2 and 3 screw thread fixed mounting of second backup pad, the rectangular channel prevents that first backup pad 2 and second backup pad 3 from inclining.
Specifically, one end of the inclined ribbed plate 4, which is close to the screw rod 6, is provided with a threaded connecting sleeve 15, the threaded connecting sleeve 15 is in threaded connection with the screw rod 6, and the threaded connecting sleeve 15 is convenient for the movement of the inclined ribbed plate 4.
Specifically, this large-span foundation ditch supporting construction, rotary rod 7 drives the meshing of bevel gear 12 and connects, it rotates at 5 in the rectangle mounting groove to drive lead screw 6, make 4 one ends of inclined floor move on lead screw 6, the other end is pegged graft and is supported fixedly to first backup pad 2 in rectangle mounting groove 5, inclined floor 4 drives fixed bump 14 and fixes fixed point at the concave groove of fixed plate 13, make fixed plate 13 support first backup pad 2, anchor rod 11 extends to in the foundation ditch side slope, reinforcing plate 10 protects second backup pad 3 and supports. This large-span foundation ditch supporting construction, the side slope of the foundation ditch of being convenient for is fixed, prevents that the foundation ditch side slope is not hard up, and can increase and support the lifting surface area, reduces cracked occurence of failure.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (5)
1. The utility model provides a large-span excavation supporting construction, includes support column (1), first backup pad (2), second backup pad (3) and inclined floor (4), its characterized in that: the supporting columns (1) are symmetrically provided with four groups, the four groups of supporting columns (1) are vertically arranged, two groups of first supporting plates (2) are symmetrically arranged between two groups of transversely adjacent supporting columns (1), two groups of second supporting plates (3) are symmetrically arranged between two groups of vertically adjacent supporting columns (1), the first supporting plates (2) and the second supporting plates (3) are surrounded to form a rectangular structure, one side face opposite to the two groups of second supporting plates (3) is symmetrically provided with rectangular mounting grooves (5), lead screws (6) are longitudinally arranged in the two groups of rectangular mounting grooves (5) through bearings, two groups of rotating rods (7) are arranged in the middle position of the top end face of each second supporting plate (3), the two groups of rotating rods (7) penetrate through the rectangular mounting grooves (5), and conical gears (12) are fixedly sleeved at one ends of the rotating rods (7) and polished rods of the lead screws (6), two sets of conical gear (12) intermeshing connects, and two sets of inserting groove (8) have all been seted up to first backup pad (2) relative side intermediate position symmetry, lead screw (6) week side threaded connection has inclined floor (4), just the other end and inserting groove (8) of inclined floor (4) are connected.
2. The large-span foundation pit supporting structure of claim 1, wherein: the two groups of the inserting grooves (8) are positioned in the first supporting plate (2) and communicated in a penetrating manner, the first supporting plate (2) is internally provided with a fixing plate (13) positioned in the penetrating and communicated inserting grooves (8), two groups of concave grooves are symmetrically formed in one side surface of the fixing plate (13), and fixing convex points (14) matched with the concave grooves for use are arranged at one ends of the two groups of the inclined rib plates (4) positioned in the inserting grooves (8).
3. The large-span foundation pit supporting structure of claim 1, wherein: second backup pad (3) inner wall intermediate position is vertical to be provided with reinforcing plate (10), just reinforcing plate (10) pass through the bolt respectively with two sets of second backup pad (3) screw thread fixed mounting, two sets of reinforcing plate (10) a side just is located screw thread through connection between two sets of second backup pads (3) has stock (11), and is two sets of stock (11) other end all extends to in the foundation ditch slope.
4. The large-span foundation pit supporting structure of claim 1, wherein: four groups N group rectangular channels have all been seted up to support column (1) week side, and dock respectively in N group rectangular channels with first backup pad (2) and second backup pad (3) fixed connection, just support column (1) all through fastening bolt (9) respectively with first backup pad (2) and second backup pad (3) thread fixed mounting.
5. The large-span foundation pit supporting structure of claim 1, wherein: one end, close to the screw rod (6), of the inclined rib plate (4) is provided with a threaded connecting sleeve (15), and the threaded connecting sleeve (15) is in threaded connection with the screw rod (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922200219.7U CN211713976U (en) | 2019-12-10 | 2019-12-10 | Large-span foundation pit supporting structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922200219.7U CN211713976U (en) | 2019-12-10 | 2019-12-10 | Large-span foundation pit supporting structure |
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| CN211713976U true CN211713976U (en) | 2020-10-20 |
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| CN201922200219.7U Active CN211713976U (en) | 2019-12-10 | 2019-12-10 | Large-span foundation pit supporting structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113718782A (en) * | 2021-08-30 | 2021-11-30 | 中国三冶集团有限公司 | Secondary excavation and support construction method for deep foundation pit |
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- 2019-12-10 CN CN201922200219.7U patent/CN211713976U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113718782A (en) * | 2021-08-30 | 2021-11-30 | 中国三冶集团有限公司 | Secondary excavation and support construction method for deep foundation pit |
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