Foundation pit construction supporting device under complex geological conditions

Abstract

The utility model relates to the technical field of foundation pit supporting, in particular to a foundation pit construction supporting device under complex geological conditions. The foundation pit construction supporting device under the complex geological condition comprises a corrugated steel plate and two supporting steel plates fixedly embedded in the two sides of the corrugated steel plate respectively, side connecting plates are fixedly embedded in the opposite side walls of the supporting steel plates, bases are fixedly installed at the bottoms of the supporting steel plates, and side supporting assemblies used for obliquely supporting the supporting steel plates are erected on the bases. According to the foundation pit construction supporting device under the complex geological condition, due to the fact that the corrugated steel plate is arranged between the two supporting steel plates, the corrugated steel plate can be effectively stretched or compressed through manual construction, and the situation that a foundation pit supporting face needs to be matched with other supporting plates due to the fact that the supporting plate face is too long in a traditional method is avoided; and the corrugated steel plate can effectively reduce the influence on other supporting plates on the same side after a certain supporting plate on one side of the foundation pit is subjected to transverse impact stress.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit support, in particular to a foundation pit construction support device under complex geological conditions. Background Art

[0002] Due to the instability of deep foundation pits adjacent to roads under complex geological conditions, it is necessary to support the slopes during foundation pit construction under complex geological conditions. Traditional support methods include supporting steel plates in combination with slope diagonal brace reinforcement. When using supporting steel plates, due to the same width of the supporting steel plates, the foundation pit supports at the same side corners often have a smaller support width than the supporting steel plates, which leads to the need to cut or select other steel plates for support, resulting in the hidden danger of poor support stability. Due to the complex geological soil, the unstable slope soil is more prone to landslides. When one supporting steel plate is impacted, the steel plates on the same side are susceptible to vibration, and therefore, it is necessary to construct on an unstable slope for a long time during construction, which poses a great safety hazard.

[0003] Therefore, it is necessary to provide a new foundation pit construction support device under complex geological conditions to solve the above technical problems. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a foundation pit construction support device under complex geological conditions which can measure the cutting length and save time and labor.

[0005] The foundation pit construction support device provided by the utility model under complex geological conditions includes:

[0006] Corrugated steel plates, and

[0007] Two supporting steel plates are respectively fixedly embedded on both sides of the corrugated steel plate, and the side walls of the two supporting steel plates facing each other are fixedly embedded with side connecting plates, and a base is fixedly installed at the bottom of each supporting steel plate, and a side support assembly for diagonally supporting the supporting steel plate is set on each base;

[0008] The side support assembly includes a rotating frame, which is fixedly mounted on a base and has two rotatably connected rotating sleeves mounted on the rotating frame. Support plates of different lengths are respectively fixedly mounted on the two rotating sleeves, and abutment plates fixedly connected to the supporting steel plates are respectively fixedly mounted on the other ends of the two support plates.

[0009] Preferably, the abutment plates on the two support plates are distributed up and down on the same supporting steel plate.

[0010] Preferably, a plurality of groups of reinforcement components equidistantly distributed up and down are arranged between the two supporting steel plates, and the reinforcement components include abutment rods, both sides of the abutment rods are sleeved with slidably connected fixing tubes, and the two fixing tubes are respectively fixedly welded to the supporting steel plates on both sides of the corrugated steel plates, and both sides of the abutment rods are welded with vertically arranged limit plates, and the limit plates pass through the sliding grooves a opened in the corresponding fixing tubes.

[0011] Preferably, an upper edge plate is fixedly welded to the top of each supporting steel plate.

[0012] Preferably, each of the upper edge plates is provided with a plurality of pulling members, and the pulling members include a steel wire rope, one end of the steel wire rope is fixedly connected to the front end surface of the upper edge plate, and the other end of the steel wire rope is fixedly connected to a connecting ring, in which a ground nail is inserted.

[0013] Preferably, the side connecting plate is provided with a plurality of side holes distributed vertically.

[0014] Compared with the related art, the foundation pit construction support device under complex geological conditions provided by the utility model has the following beneficial effects:

[0015] Since the utility model has a section of corrugated steel plate between the two supporting steel plates, the corrugated steel plate can be effectively stretched or compressed by artificial construction, and then the width of the supporting plate surface composed of the corrugated steel plate and the supporting steel plates on both sides can be flexibly adjusted, thereby avoiding the hidden danger of poor support stability caused by the traditional need to match the supporting plate surface of the foundation pit due to the excessive length of the supporting plate surface. The corrugated steel plate can effectively reduce the influence of the lateral impact stress received by a certain supporting plate on one side of the foundation pit on other supporting plates on the same side. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is one of the structural schematic diagrams of a preferred embodiment of the foundation pit construction support device under complex geological conditions provided by the utility model;

[0017] Figure 2 A second structural schematic diagram of a preferred embodiment of the foundation pit construction support device under complex geological conditions provided by the utility model;

[0018] Figure 3 for Figure 1 Schematic diagram of the connection structure of the corrugated steel plate and the supporting steel plate;

[0019] Figure 4 for Figure 3 A schematic diagram of the structure of the reinforcement assembly shown;

[0020] Figure 5 for Figure 1 A schematic structural diagram of the side support assembly shown;

[0021] Figure 6 for Figure 2 A schematic diagram of the structure of the pull-and-close member shown;

[0022] Figure 7 This is a schematic diagram of the connection structure of the foundation pit construction support device under complex geological conditions provided by the utility model.

[0023] Numbers in the figure: 1. Corrugated steel plate; 2. Support steel plate; 3. Side connecting plate; 3a. Side hole; 4. Reinforcement assembly; 41. Abutment rod; 42. Fixed pipe; 42a. Sliding groove; 43. Limiting plate; 5. Base; 6. Side support assembly; 61. Rotating frame; 62. Rotating sleeve; 63. Support plate; 64. Abutment plate; 7. Upper edge plate; 8. Pull-and-close member; 81. Steel wire rope; 82. Connecting ring; 8. Ground nail. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0025] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0026] See also Figures 1 to 7 An embodiment of the utility model provides a foundation pit construction support device under complex geological conditions, and the foundation pit construction support device under complex geological conditions includes: a corrugated steel plate 1, a support steel plate 2, and a side support assembly 6.

[0027] In the embodiments of the present invention, please refer to Figure 1 , Figure 2 , Figure 3 and Figure 5 , support steel plates 2 are fixedly embedded on both sides of the corrugated steel plate 1, and a base 5 is fixedly installed on the bottom of each support steel plate 2, and a side support component 6 for diagonally supporting the support steel plate 2 is set on each base 5;

[0028] The side support assembly 6 includes a rotating frame 61, which is fixedly mounted on the base 5, and two rotatably connected rotating sleeves 62 are installed on the rotating frame 61, and support plates 63 of different lengths are fixedly mounted on the two rotating sleeves 62, and the other ends of the two support plates 63 are fixedly mounted with abutment plates 64 fixedly connected to the supporting steel plate 2, and the abutment plates 64 on the two support plates 63 are distributed up and down on the same supporting steel plate 2.

[0029] It should be noted that: first, the foundation pit slope is excavated and sloped according to the design requirements, then the bottom of the foundation pit slope is leveled, the base 5 is placed on the bottom soil of the slope foundation pit, and the base 5 is abutted against the bottom soil of the foundation pit slope to keep the corrugated steel plate 1 and the supporting steel plates 2 on both sides at the pre-designed positions on the foundation pit slope surface, and then the base 5 is fixed on the bottom surface by using long nails, and then the foundation pit formed by the supporting plate surface composed of the corrugated steel plate 1 and the supporting steel plates 2 on both sides and the slope surface is filled with soil;

[0030] At this time, since the backs of the two supporting steel plates 2 are supported by multiple supporting plates 63, and the triangular inner supporting structure composed of multiple supporting plates 63, the ground and the supporting steel plates 2 can support the deep foundation pit more stably and reliably, greatly improving its stability, thereby forming a good joint supporting system to support the deep foundation pit;

[0031] The side walls of the two supporting steel plates 2 facing each other are fixedly fitted with side connecting plates 3, and the side connecting plates 3 are provided with a plurality of side holes 3a distributed vertically, so that the adjacent supporting plate surfaces can be butt-jointed by passing bolts through the side holes 3a provided on the corresponding side connecting plates 3 (see attached Figure 7 As shown in the figure, the assembly of the support structure on the slope on the same side of the foundation pit was accelerated;

[0032] It is worth noting that: since a section of pleated steel plate 1 is arranged between the two supporting steel plates 2, the pleated steel plate 1 can be effectively stretched or compressed by artificial construction, and then the width of the supporting plate surface composed of the pleated steel plate 1 and the supporting steel plates 2 on both sides can be flexibly adjusted, thereby avoiding the hidden danger of poor supporting stability in the traditional foundation pit supporting surface due to the need to match it with other supporting plates because the supporting plate surface is too long;

[0033] The designed corrugated steel plate 1 can effectively reduce the influence of the lateral impact stress on a supporting plate on one side of the foundation pit on other supporting plates on the same side.

[0034] In the embodiments of the present invention, please refer to Figure 3 and Figure 4 A plurality of groups of reinforcement components 4 equidistantly distributed vertically are arranged between the two supporting steel plates 2, and the reinforcement components 4 include abutment rods 41, both sides of the abutment rods 41 are sleeved with slidingly connected fixing tubes 42, and the two fixing tubes 42 are respectively fixedly welded to the supporting steel plates 2 on both sides of the corrugated steel plate 1, and both sides of the abutment rods 41 are welded with vertically arranged limiting plates 43, and the limiting plates 43 pass through the sliding grooves 42a opened in the corresponding fixing tubes 42.

[0035] It should be noted that the abutment rod 41 can abut against the inner side surface of the corrugated steel plate 1 to avoid the hidden danger of excessive deformation of the corrugated steel plate 1 due to impact on the outer end surface of the corrugated steel plate 1, and when the corrugated steel plate 1 is stretched or compressed laterally, the abutment rod 41 can slide along the fixed tube 42, thereby not affecting the spacing adjustment between the two supporting steel plates 2.

[0036] In the embodiments of the present invention, please refer to Figure 2 and Figure 6 An upper edge plate 7 is fixedly welded to the top of each supporting steel plate 2, and a plurality of pull-and-close members 8 are provided on each upper edge plate 7, and the pull-and-close members 8 include a steel wire rope 81, one end of the steel wire rope 81 is fixedly connected to the front end surface of the upper edge plate 7, and the other end of the steel wire rope 81 is fixedly connected to a connecting ring 82, and a ground nail 83 is inserted in the connecting ring 82.

[0037] It should be noted that after the base 5 and the supporting steel plate 2 on the same side slope of the foundation pit are connected, the steel wire rope 81 is stretched straight and inclined with the supported ground. At this time, the ground nails 83 are inserted into the ground to fix the connecting ring 82 on the ground, thereby pulling the top of the supporting steel plate 2 outward, cooperating with the side support assembly 6, to further enhance the stability of the foundation pit support.

[0038] The working principle of the foundation pit construction support device provided by the utility model under complex geological conditions is as follows:

[0039] First, the foundation pit slope is excavated and sloped according to the design requirements, and then the bottom of the foundation pit slope is leveled, and the base 5 is placed on the bottom soil of the slope foundation pit, and the base 5 is abutted against the bottom soil of the foundation pit slope to keep the corrugated steel plate 1 and the supporting steel plates 2 on both sides at the pre-designed positions of the foundation pit slope surface, and then the base 5 is fixed on the bottom surface by using long nails, and then the foundation pit formed by the supporting plate surface composed of the corrugated steel plate 1 and the supporting steel plates 2 on both sides and the slope surface is filled with soil;

[0040] At this time, since the backs of the two supporting steel plates 2 are supported by multiple supporting plates 63, and the triangular inner supporting structure composed of multiple supporting plates 63, the ground and the supporting steel plates 2 can support the deep foundation pit more stably and reliably, greatly improving its stability, thereby forming a good joint supporting system to support the deep foundation pit, and the adjacent supporting plate surfaces can be connected by bolts passing through the side holes 3a opened in the corresponding side connecting plates 3 (as shown in the attached figure). Figure 7As shown in the figure, the assembly of the support structure on the slope of the same side of the foundation pit is accelerated. Since a section of pleated steel plate 1 is arranged between the two supporting steel plates 2, the pleated steel plate 1 can be effectively stretched or compressed by artificial construction, and then the width of the supporting plate surface composed of the pleated steel plate 1 and the supporting steel plates 2 on both sides can be flexibly adjusted, avoiding the hidden danger of poor support stability caused by the traditional need to match the supporting plate surface of the foundation pit due to the excessive length of the supporting plate surface. The designed pleated steel plate 1 can effectively reduce the influence of the lateral impact stress on a supporting plate on one side of the foundation pit on other supporting plates on the same side, and the arranged abutment rod 41 can abut the inner side surface of the pleated steel plate 1 to avoid the hidden danger of excessive deformation of the outer end surface of the pleated steel plate 1 due to the impact, and when the pleated steel plate 1 is stretched or compressed in the horizontal direction, the abutment rod 41 can slide along the fixed pipe 42, thereby not affecting the spacing adjustment between the two supporting steel plates 2;

[0041] After the base 5 and the supporting steel plate 2 on the same side slope of the foundation pit are connected, the steel wire rope 81 is stretched straight and inclined with the supported ground. At this time, the ground nails 83 are inserted into the ground to fix the connecting ring 82 on the ground, thereby pulling the top of the supporting steel plate 2 outward, and cooperating with the side support assembly 6 to further enhance the stability of the foundation pit support.

[0042] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A foundation pit construction support device under complex geological conditions, characterized in that: include: Corrugated steel sheet (1), and Two supporting steel plates (2) are respectively fixedly embedded on both sides of the corrugated steel plate (1), and side connecting plates (3) are fixedly embedded on the opposite side walls of the two supporting steel plates (2), a base (5) is fixedly installed at the bottom of each supporting steel plate (2), and a side support assembly (6) for diagonally supporting the supporting steel plate (2) is mounted on each base (5); The side support assembly (6) comprises a rotating frame (61), the rotating frame (61) being fixedly mounted on the base (5), and the rotating frame (61) being mounted with two rotating sleeves (62) which are rotatably connected, and the two rotating sleeves (62) being respectively fixedly mounted with support plates (63) of different lengths, and the other ends of the two support plates (63) being respectively fixedly mounted with abutment plates (64) which are fixedly connected to the supporting steel plate (2).

2. The foundation pit construction support device under complex geological conditions according to claim 1 is characterized in that: The abutment plates (64) on the two support plates (63) are distributed vertically on the same supporting steel plate (2).

3. The foundation pit construction support device under complex geological conditions according to claim 1 is characterized in that: A plurality of groups of reinforcement components (4) equidistantly distributed vertically are arranged between the two supporting steel plates (2), and the reinforcement components (4) include abutment rods (41), both sides of the abutment rods (41) are sleeved with slidably connected fixing tubes (42), and the two fixing tubes (42) are respectively fixedly welded to the supporting steel plates (2) on both sides of the corrugated steel plate (1), and both sides of the abutment rods (41) are welded with vertically arranged limiting plates (43), and the limiting plates (43) pass through sliding grooves (42a) provided on the corresponding fixing tubes (42).

4. The foundation pit construction support device under complex geological conditions according to claim 1 is characterized in that: An upper edge plate (7) is fixedly welded to the top of each supporting steel plate (2).

5. The foundation pit construction support device under complex geological conditions according to claim 4 is characterized in that: A plurality of pull-and-close members (8) are provided on each of the upper edge plates (7), and the pull-and-close members (8) include a steel wire rope (81), one end of the steel wire rope (81) is fixedly connected to the front end surface of the upper edge plate (7), and the other end of the steel wire rope (81) is fixedly connected to a connecting ring (82), and a ground nail (83) is inserted into the connecting ring (82).

6. The foundation pit construction support device under complex geological conditions according to claim 1 is characterized in that: The side connecting plate (3) is provided with a plurality of side holes (3a) distributed vertically.

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