Truss type foundation pit support and foundation pit support assembly

Abstract

The truss type foundation pit support comprises a plurality of frame bodies, the frame bodies are evenly distributed in the horizontal direction of the inner wall of a foundation pit and used for supporting a baffle in the vertical direction, and a reinforcing cross beam is connected between every two adjacent frame bodies and used for achieving reinforcing connection between every two adjacent frame bodies. The supporting structure has the beneficial effects that the baffles are supported through the frame bodies, the same frame body can support the multiple baffles in the vertical direction at the same time, reinforcing connection between the adjacent frame bodies is achieved in cooperation with the reinforcing cross beams, all the baffles can form a relatively unified whole, the overall supporting strength is high, and local damage can be effectively avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of foundation pit support, in particular to a truss type foundation pit support and a foundation pit support assembly. BACKGROUND

[0002] The foundation pit support is an important process of construction, and is a support, reinforcement and protection measure for the side wall of the foundation pit and the surrounding environment to ensure the safety of underground structure construction and the surrounding environment of the foundation pit.

[0003] When supporting and protecting a large foundation pit, a pile column is usually used in combination with a baffle to support the foundation pit. The pile column is used to fix the baffle, which is mainly point support, and there is no reinforcing connection function between the point supports, so the overall support strength is not ideal, and there are hidden dangers of local support damage. SUMMARY

[0004] The purpose of the present application is to provide a truss type foundation pit support and a foundation pit support assembly to solve the above problems, as described below.

[0005] To achieve the above purpose, the present application provides the following technical solutions: The present application provides a truss type foundation pit support, which comprises a frame body, the frame body is provided with a plurality of frame bodies, and the frame bodies are uniformly distributed along the horizontal direction of the inner wall of the foundation pit, and are used to support the baffle in the vertical direction, and a reinforcing cross beam is connected between the two adjacent frame bodies to realize the reinforcing connection between the adjacent frame bodies.

[0006] As a preferred, the frame body comprises a support column, the support column has two, the support column extends vertically, and the distribution planes of the two support columns are perpendicular to the inner wall of the foundation pit, and a connecting longitudinal beam is uniformly arranged between the two support columns from top to bottom.

[0007] As a preferred, the two support columns corresponding to the two adjacent frame bodies are connected by a reinforcing cross beam, and the reinforcing cross beams are uniformly distributed in the vertical direction.

[0008] As a preferred, the reinforcing cross beam and the connecting longitudinal beam have the same structure, and both ends of the two are connected with a plug-in frame, the plug-in frame is plug-in matched with the support column, and is detachably connected outside the support column through a locking bolt.

[0009] As a preferred, both ends of the reinforcing cross beam and the connecting longitudinal beam are provided with a plug-in cavity, the outside of both ends of the reinforcing cross beam and the connecting longitudinal beam is provided with a waist-shaped groove, the waist-shaped groove extends along the length direction of the reinforcing cross beam and the connecting longitudinal beam, and the waist-shaped groove is in communication with the plug-in cavity, the outside of the connecting frame is formed with a plug-in column, the plug-in column is plug-in matched with the plug-in cavity, the outside of the end of the plug-in column is connected with a positioning stud, the positioning stud penetrates through the waist-shaped groove and is connected with a positioning nut.

[0010] Preferably, two waist-shaped grooves are arranged at each end of the reinforcing cross beam and the connecting longitudinal beam, and the two waist-shaped grooves are symmetrically distributed with the width center line of the reinforcing cross beam and the connecting longitudinal beam as the reference.

[0011] Preferably, a fixing plate is arranged at the surface of each end of the reinforcing cross beam and the connecting longitudinal beam, a reinforcing bolt is arranged through the side of the fixing plate by screwing, a threaded hole is arranged at the side of the end of the insertion frame of the reinforcing cross beam and the connecting longitudinal beam close to the end of the corresponding reinforcing bolt, and the threaded hole is screwed with the reinforcing bolt.

[0012] Preferably, two insertion columns are arranged at the outside of the insertion frame connected with the reinforcing cross beam, the two insertion columns are coaxial and have opposite extending directions.

[0013] The application further provides a foundation pit supporting assembly, which comprises the truss type foundation pit support and a baffle matched with the truss type foundation pit support, and the surface of the baffle is provided with a contact seat for directly contacting with the supporting column in the truss type foundation pit support. The baffle is provided with a splicing convex plate and a splicing groove at the two sides respectively, the splicing convex plate is correspondingly matched with the splicing groove, the surface of the splicing convex plate is uniformly provided with a splicing insertion column in the vertical direction, and the surface of the splicing groove is provided with a splicing insertion hole for insertion matching with the splicing insertion column.

[0014] Preferably, the contact seat comprises a fixing seat fixedly arranged on the surface of the baffle, a bearing plate arranged outside the fixing seat, an adjusting bolt threadedly connected on the surface of the bearing plate, and a sliding seat rotationally connected with the end of the adjusting bolt extending to the surface of the fixing seat away from the baffle, the sliding seat is slidingly matched with the fixing seat, and the relative sliding surfaces of the sliding seat and the fixing seat are both inclined surface structures for gradually increasing or reducing the overall thickness of the sliding seat and the fixing seat when the sliding seat and the fixing seat relatively slide. The inclined surface of the fixing seat is provided with a guide strip, the inclined surface of the sliding seat is provided with a guide groove, the guide groove and the guide strip both extend along the sliding direction of the sliding seat, and the guide groove is slidingly matched with the guide strip.

[0015] The two support columns in the frame body are pre-buried in front of the inner wall of the foundation pit according to the distribution of the inner wall of the foundation pit, and a space for accommodating the baffle is arranged between the support column close to the inner wall of the foundation pit and the inner wall of the foundation pit. According to the specific distance between the two support columns in the frame body and the corresponding support columns between adjacent frame bodies, the positions of the plug-in frames at the two ends of the connecting longitudinal beam and the reinforcing cross beam are adjusted, and the specific operation is as follows: the positioning nut is loosened, the plug-in column slides in the plug-in cavity, the position of the plug-in frame is adjusted, after the adjustment is completed, the positioning nut is tightened, and the plug-in frame is fixed; the connecting longitudinal beam between the two support columns in the frame body and the reinforcing cross beam between the corresponding support columns of the adjacent two frame bodies are installed in a top-down manner, and the connecting longitudinal beam and the reinforcing cross beam are installed alternately during the installation process. The specific installation operation is as follows: the connecting longitudinal beam is taken out, the plug-in frames at the two ends of the connecting longitudinal beam correspond to the two support columns in the frame body respectively, the plug-in frames are inserted into the outer sides of the support columns, the height of the plug-in frame is adjusted, and the plug-in frame is fixedly connected to the outer side of the support column through the locking bolt. All the connecting longitudinal beams in the bottom layer of the frame body are connected in sequence in the above-mentioned manner; after the installation of the connecting longitudinal beam in the bottom layer is completed, the reinforcing cross beam is taken out, the plug-in frames at the two ends of the reinforcing cross beam correspond to the two corresponding support columns in the adjacent frame body respectively, the plug-in frames are inserted into the outer sides of the support columns, the height of the plug-in frame is adjusted, and the plug-in frame is fixedly connected to the outer side of the support column through the locking bolt. The reinforcing cross beams between the same layer of the adjacent frame bodies are installed in sequence in the above-mentioned manner; the installation of the connecting longitudinal beam in the same layer and the installation of the reinforcing cross beam in the same layer are sequentially carried out in an interleaved manner, so that the whole truss foundation pit support is installed in front of the inner wall of the foundation pit; the baffle is laid on the surface of the inner wall of the foundation pit, the splicing of two horizontally adjacent baffles is realized through the cooperation of the splicing plug-in column on the surface of the splicing convex plate and the splicing plug-in hole on the surface of the splicing recess, the baffles horizontally distributed form a relatively unified whole, the adjusting bolt is screwed, the sliding seat slides relative to the fixed seat, under the inclined surface guiding action of the sliding seat and the fixed seat, the overall thickness of the sliding seat and the fixed seat gradually increases, the sliding seat gradually fully contacts with the support column, so that the frame body supports the baffle through the contact seat, and the support of the inner wall of the foundation pit is completed; the adjacent frame bodies are connected through the reinforcing cross beam, so that all the frame bodies form a relatively unified truss structure, and the baffles are integrally supported, the integral support strength is high, the local damage of the baffles can be effectively avoided, and the support effect of the inner wall of the foundation pit is good.

[0016] The baffles are supported by the frame body, the same frame body can support multiple baffles in the vertical direction at the same time, the adjacent frame bodies are connected and reinforced through the reinforcing cross beam, all the baffles can form a relatively unified whole, the integral support strength is high, and the local damage can be effectively avoided. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only constitute some of the embodiments of the present application, and all other embodiments obtained by those of ordinary skill in the art without creative effort based on these drawings also belong to the protection scope of the present application.

[0018] Figure 1 is a schematic diagram of the three-dimensional structure of the present application; Figure 2 is an enlarged schematic diagram of part A of Figure 1 Figure 3 is a schematic diagram of the three-dimensional structure of the baffle; Figure 4 is a schematic diagram of the three-dimensional structure of the contact seat; Figure 5 is a top view of the contact seat.

[0019] The following is a description of the reference signs: 1, frame body; 101, support column; 102, connecting longitudinal beam; 2, reinforcing cross beam; 3, insertion frame; 301, threaded hole; 4, locking bolt; 5, insertion column; 6, waist-shaped groove; 7, positioning stud; 8, positioning nut; 9, reinforcing bolt; 10, fixing plate; 11, baffle; 1101, splicing protruding plate; 1102, splicing insertion column; 1103, splicing groove; 1104, splicing insertion hole; 12, contact seat; 1201, fixed seat; 1202, bearing plate; 1203, adjusting bolt; 1204, sliding seat; 1205, guide groove; 1206, guide bar. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present application more clear, the technical solutions of the present application will be described in detail below. Obviously, the described embodiments only constitute some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the protection scope of the present application.

[0021] Referring to Figures 1-5 , the present application provides a truss type foundation pit support and a foundation pit support assembly, which comprises a frame body 1, the frame body 1 is provided with a plurality of frame bodies 1, and is uniformly distributed along the horizontal direction of the inner wall of the foundation pit, for supporting the baffle 11 in the vertical direction, and a reinforcing cross beam 2 is connected between the adjacent two frame bodies 1, for realizing the reinforcing connection between the adjacent frame bodies 1.

[0022] ​As an optional implementation, the frame body 1 comprises two support columns 101 which are vertically extended and whose distribution planes are perpendicular to the inner wall of the foundation pit, and the connecting longitudinal beams 102 are uniformly arranged between the two support columns 101 from top to bottom. In this way, by uniformly arranging the connecting longitudinal beams 102 between the two support columns 101 from top to bottom, the overall strength of the frame body 1 can be improved, thereby ensuring the supporting effect of the frame body 1 on the baffle 11.

[0023] The two support columns 101 corresponding to the adjacent two frame bodies 1 are connected with the reinforcing cross beams 2 which are uniformly distributed in the vertical direction. In this way, the connecting strength between the adjacent frame bodies 1 can be improved, thereby improving the overall strength of all the frame bodies 1 and the supporting strength of the baffle 11.

[0024] The reinforcing cross beams 2 and the connecting longitudinal beams 102 are the same in structure, and both ends of the two are connected with the plug-in frames 3 which are plug-in matched with the support columns 101 and detachably connected to the outer side of the support columns 101 through the locking bolts 4. In this way, the plug-in frames 3 facilitate the detachable connection of the connecting longitudinal beams 102 and the reinforcing cross beams 2 with the support columns 101, simplify the construction operation, and provide construction efficiency. At the same time, it can be used multiple times to reduce costs.

[0025] Both ends of the reinforcing cross beams 2 and the connecting longitudinal beams 102 are provided with plug-in cavities, and the outer side of both ends of the reinforcing cross beams 2 and the connecting longitudinal beams 102 is provided with a waist-shaped groove 6 which extends along the length direction of the reinforcing cross beams 2 and the connecting longitudinal beams 102 and is in communication with the plug-in cavities. The outer side of the connecting frame is formed with a plug-in column 5 which is plug-in matched with the plug-in cavities. The end portion of the plug-in column 5 is connected with a positioning stud 7 which penetrates through the waist-shaped groove 6 and is connected with a positioning nut 8. In this way, by loosening the positioning nut 8, the plug-in column 5 slides in the plug-in cavity, the position adjustment of the plug-in frame 3 is realized, and after the adjustment is completed, the positioning nut 8 is tightened to fix the plug-in frame 3, thereby realizing the position adjustment of the plug-in frames 3 at both ends of the connecting longitudinal beams 102 and the reinforcing cross beams 2 and ensuring the accurate connection of the connecting longitudinal beams 102 and the reinforcing cross beams 2 with the support columns 101.

[0026] The waist-shaped grooves 6 at each end of the reinforcing cross beams 2 and the connecting longitudinal beams 102 are provided with two, and the two waist-shaped grooves 6 are symmetrically distributed with the width center line of the reinforcing cross beams 2 and the connecting longitudinal beams 102 as the reference. In this way, the connecting strength of the plug-in frame 3 with the connecting longitudinal beams 102 and the reinforcing cross beams 2 can be improved.

[0027] The two ends of the reinforcing cross beam 2 and the connecting longitudinal beam 102 are provided with fixing plates 10, the fixing plates 10 are provided with reinforcing bolts 9 penetrating through the sides by threads, the end of the plug-in frame 3 of the reinforcing cross beam 2 and the connecting longitudinal beam 102 is provided with a threaded hole 301 on the side close to the end of the corresponding reinforcing bolt 9, the threaded hole 301 is threadedly matched with the reinforcing bolt 9, in this way, after the position adjustment of the plug-in frame 3 is completed, the reinforcing bolt 9 is screwed, the reinforcing bolt 9 is screwed into the inside of the threaded hole 301, and the connection strength of the plug-in frame 3 with the connecting longitudinal beam 102 and the reinforcing cross beam 2 is further improved.

[0028] The plug-in column 5 on the outside of the plug-in frame 3 connected with the reinforcing cross beam 2 is provided with two, the two plug-in columns 5 are coaxial and the extending directions are opposite, in this way, the reinforcing cross beams 2 of the same layer between the adjacent frame bodies 1 can be in the same horizontal plane, and the connection strength between the frame bodies 1 is guaranteed.

[0029] The application also provides a foundation pit support assembly, which comprises the truss type foundation pit support and the baffle 11 matched with the truss type foundation pit support, and the surface of the baffle 11 is provided with a contact seat 12 for directly contacting the supporting column 101 in the truss type foundation pit support. The two sides of the baffle 11 are respectively provided with a splicing convex plate 1101 and a splicing recess 1103, the splicing convex plate 1101 is correspondingly matched with the splicing recess 1103, the surface of the splicing convex plate 1101 is uniformly provided with a splicing plug-in column 1102 in the vertical direction, and the surface of the splicing recess 1103 is provided with a splicing plug-in hole 1104 penetratingly arranged and matched with the splicing plug-in column 1102. The contact seat 12 comprises a fixed seat 1201 fixedly arranged on the surface of the baffle 11, the outside of the fixed seat 1201 is provided with a bearing plate 1202, the surface of the bearing plate 1202 is threadedly connected with an adjusting bolt 1203, the end of the adjusting bolt 1203 extends to the surface of the fixed seat 1201 away from the baffle 11 and is rotationally connected with a sliding seat 1204, the sliding seat 1204 is slidably matched with the fixed seat 1201, and the relative sliding surfaces of the sliding seat 1204 and the fixed seat 1201 are both inclined surface structures, so that the overall thickness of the sliding seat 1204 and the fixed seat 1201 gradually increases or decreases when the sliding seat 1204 relatively slides with the fixed seat 1201; preferably, the sliding seat 1204 and the fixed seat 1201 relatively slide in the horizontal direction, in this way, the construction operation is facilitated in the specific construction process.

[0030] The inclined surface of the fixed seat 1201 is provided with a guide strip 1206, and the inclined surface of the sliding seat 1204 is provided with a guide groove 1205. The guide groove 1205 and the guide strip 1206 extend along the sliding direction of the sliding seat 1204, and the guide groove 1205 and the guide strip 1206 are in sliding cooperation. Through the guide groove 1205 and the guide strip 1206, the sliding seat 1204 can be positioned and guided, so that the sliding seat 1204 and the fixed seat 1201 can slide accurately.

[0031] With the above structure, during construction, the support columns 101 in the frame body 1 are pre-buried in front of the inner wall of the foundation pit according to the distribution of the inner wall of the foundation pit, and a space for accommodating the baffle 11 is arranged between the support column 101 close to the inner wall of the foundation pit and the inner wall of the foundation pit, the positions of the plug-in frames 3 at the two ends of the connecting longitudinal beams 102 and the reinforcing cross beams 2 are adjusted according to the specific distance between the two support columns 101 in the frame body 1 and the corresponding support columns 101 between the adjacent frame bodies 1, and the specific operation is as follows: the positioning nut 8 is loosened, the plug-in column 5 slides in the plug-in cavity, the position of the plug-in frame 3 is adjusted, after the adjustment is completed, the positioning nut 8 is tightened to fix the plug-in frame 3; the connecting longitudinal beams 102 between the two support columns 101 in the frame body 1 and the reinforcing cross beams 2 between the corresponding support columns 101 of the adjacent two frame bodies 1 are installed from bottom to top, and the connecting longitudinal beams 102 and the reinforcing cross beams 2 are staggered during installation, and the specific installation operation is as follows: the connecting longitudinal beam 102 is taken out, the plug-in frames 3 at the two ends of the connecting longitudinal beam 102 correspond to the two support columns 101 in the frame body 1 respectively, the plug-in frames 3 are inserted on the outer side of the support columns 101, the height of the plug-in frame 3 is adjusted, and the plug-in frame 3 is fixedly connected to the outer side of the support column 101 through the locking bolt 4, and all the connecting longitudinal beams 102 in the frame body 1 located on the bottom layer are connected in sequence by using the above method; after the installation of the connecting longitudinal beams 102 on the bottom layer is completed, the reinforcing cross beam 2 is taken out, the plug-in frames 3 at the two ends of the reinforcing cross beam 2 correspond to the corresponding two support columns 101 in the adjacent frame body 1 respectively, the plug-in frames 3 are inserted on the outer side of the support columns 101, the height of the plug-in frame 3 is adjusted, and the plug-in frame 3 is fixedly connected to the outer side of the support column 101 through the locking bolt 4, and the reinforcing cross beams 2 between the same layer of the adjacent frame bodies 1 are installed in sequence by using the above method; the installation of the connecting longitudinal beams 102 on the same layer and the installation of the reinforcing cross beams 2 on the same layer are sequentially performed in a staggered manner, so that the whole truss foundation pit support is installed in front of the inner wall of the foundation pit; the baffle 11 is laid on the surface of the inner wall of the foundation pit, the splicing of two horizontally adjacent baffles 11 is realized through the cooperation of the splicing plug-in column 1102 on the surface of the splicing convex plate 1101 and the splicing plug-in hole 1104 on the surface of the splicing recess 1103, the baffles 11 horizontally distributed form a relatively unified whole, the sliding seat 1204 slides relative to the fixed seat 1201 by rotating the adjusting bolt 1203, under the inclined surface guiding action of the sliding seat 1204 and the fixed seat 1201, the overall thickness of the sliding seat 1204 and the fixed seat 1201 gradually increases, the sliding seat 1204 gradually fully contacts the support column 101, so that the frame body 1 supports the baffle 11 through the contact seat 12, and the support of the inner wall of the foundation pit is completed; the adjacent frame bodies 1 are connected through the reinforcing cross beams 2, so that all the frame bodies 1 form a relatively unified truss structure, and the baffles 11 are supported as a whole, the overall support strength is high, the local baffle 11 can be effectively prevented from falling off and being damaged, and the support effect on the inner wall of the foundation pit is good.

[0032] The above merely illustrates the specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A truss-type foundation pit support, characterized in that: The system includes multiple frames that are evenly distributed along the horizontal direction of the inner wall of the pit to support the baffles in the vertical direction. A reinforcing beam connects two adjacent frames to reinforce the connection between them.

2. The truss-type foundation pit support according to claim 1, characterized in that: The frame includes two support columns, which extend vertically and are arranged in a plane perpendicular to the inner wall of the pit. Connecting longitudinal beams are evenly arranged between the two support columns from top to bottom.

3. The truss-type foundation pit support according to claim 2, characterized in that: Each pair of adjacent frame structures has a reinforcing beam connecting the two corresponding support columns, and the reinforcing beams are evenly distributed along the vertical direction.

4. The truss-type foundation pit support according to claim 3, characterized in that: The reinforcing crossbeam and the connecting longitudinal beam have the same structure, and both ends of the two are connected to plug-in frames. The plug-in frames are plugged into the supporting columns and are detachably connected to the outside of the supporting columns by locking bolts.

5. The truss-type foundation pit support according to claim 4, characterized in that: Both ends of the reinforcing crossbeam and the connecting longitudinal beam are provided with insertion cavities. The outer sides of both ends of the reinforcing crossbeam and the connecting longitudinal beam are provided with waist-shaped grooves. The waist-shaped grooves extend along the length direction of the reinforcing crossbeam and the connecting longitudinal beam, and the waist-shaped grooves are connected to the insertion cavities. The outer side of the connecting frame is formed with an insertion post. The insertion post is inserted into the insertion cavity. The outer side of the end of the insertion post is connected with a positioning stud. The positioning stud passes through the waist-shaped groove and is connected with a positioning nut.

6. The truss-type foundation pit support according to claim 5, characterized in that: Two waist-shaped grooves are provided at each end of the reinforcing crossbeam and the connecting longitudinal beam, and the two waist-shaped grooves are symmetrically distributed with reference to the center line of the width of the reinforcing crossbeam and the connecting longitudinal beam.

7. The truss-type foundation pit support according to claim 5, characterized in that: Both ends of the reinforcing crossbeam and the connecting longitudinal beam are provided with fixing plates. Reinforcing bolts are threaded through the sides of the fixing plates. The plug-in frames at the ends of the reinforcing crossbeam and the connecting longitudinal beam are provided with threaded holes on the sides near the ends of the corresponding reinforcing bolts. The threaded holes are threadedly engaged with the reinforcing bolts.

8. The truss-type foundation pit support according to claim 5, characterized in that: There are two plug-in posts on the outside of the plug-in frame that are connected to the reinforcing crossbeam. The two plug-in posts are coaxial and extend in opposite directions.

9. A foundation pit support component, characterized in that: Includes the truss-type foundation pit support as described in any one of claims 1 to 8 and the baffle plate that cooperates with it, wherein the surface of the baffle plate is provided with a contact seat for direct contact with the support column in the truss-type foundation pit support; The baffle is provided with splicing protrusions and splicing grooves on both sides, with the splicing protrusions corresponding to and engaging with the splicing grooves. The surface of the splicing protrusions is uniformly provided with splicing posts along the vertical direction, and the surface of the splicing groove is provided with splicing insertion holes that engage with the splicing posts.

10. The foundation pit support component according to claim 9, characterized in that: The contact seat includes a fixed seat, which is fixedly disposed on the surface of the baffle. A bearing plate is disposed on the outer side of the fixed seat. An adjusting bolt is threadedly connected to the surface of the bearing plate. The end of the adjusting bolt extends to the surface of the fixed seat away from the baffle and is rotatably connected to a sliding seat. The sliding seat is slidably engaged with the fixed seat, and the relative sliding surfaces of the sliding seat and the fixed seat are both inclined structures, which are used to make the overall thickness of the sliding seat and the fixed seat gradually increase or decrease when the sliding seat slides relative to the fixed seat. The inclined surface of the fixed seat is provided with a guide bar, and the inclined surface of the sliding seat is provided with a guide groove. Both the guide groove and the guide bar extend along the sliding direction of the sliding seat, and the guide groove and the guide bar slide in cooperation.

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