Supporting trestle for foundation pit

Abstract

The utility model relates to a support trestle for a foundation pit, a bridge deck assembly and a support assembly for supporting the bridge deck assembly, the bridge deck assembly comprises a plurality of splice plates which are sequentially spliced along the length direction of the trestle and stride over the foundation pit, and every two adjacent splice plates are detachably connected through a fastener. The splice plates located at the two ends are at least partially attached to the ground near the edge of the foundation pit. The supporting assembly comprises two supporting plates arranged in the foundation pit, the two supporting plates are arranged close to the two opposite side walls in the foundation pit respectively, a reinforcing structure is arranged between the two supporting plates, one end of each supporting plate is fixedly arranged at the bottom of the foundation pit, and the other end of each supporting plate is connected with the corresponding splicing plate. The supporting trestle provided by the utility model can prevent the edge of the foundation pit from being subjected to larger load, and eliminates the potential safety hazard of the foundation pit during passing.

Description

Technical Field

[0001] The utility model relates to the technical field of municipal road culvert construction, in particular to a support trestle for a foundation pit. Background Art

[0002] In the construction of municipal engineering, urban renewal has become the future development direction of infrastructure construction. The excavation of existing road culvert foundation pits is an important construction content in urban renewal projects. During the construction of foundation pits, part of the traffic is often interrupted. Generally, the traffic is diverted directly, but the diversion cannot be carried out at the positions of the entrances and exits of communities, schools, and factories. Usually, steel plates are directly laid above the foundation pit as the access channels. These methods will cause the foundation pit edge to bear a large load after the foundation pit is excavated, and there are great potential safety hazards. There is an urgent need for a special trestle as the access channel. Summary of the Utility Model

[0003] The main purpose of the utility model is to propose a support trestle for a foundation pit, aiming to overcome the above-mentioned deficiencies in the prior art and solve the problem that the foundation pit edge bears a large load.

[0004] To achieve the above purpose, a support trestle for a foundation pit proposed by the utility model includes a bridge deck assembly and a support assembly for supporting the bridge deck assembly. The bridge deck assembly includes a plurality of splicing plates that are sequentially spliced along the length direction of the trestle and span above the foundation pit. Adjacent two of the splicing plates are detachably connected by fasteners. At least part of the splicing plates at both ends is attached to the ground at the edge of the foundation pit. The support assembly includes two support plates arranged in the foundation pit, and the two support plates are respectively arranged close to the opposite side walls in the foundation pit. There is a strengthening structure between the two support plates. One end of each support plate is fixedly arranged at the bottom of the foundation pit, and the other end is connected to each splicing plate.

[0005] According to some embodiments of the utility model, the splicing plate and / or the support plate includes two opposite connecting panels and a reinforcing structure arranged between the two.

[0006] According to some embodiments of the utility model, the reinforcing structure is welded to the opposite end faces of the two connecting panels respectively.

[0007] According to some embodiments of the utility model, the reinforcing structure includes a plurality of first reinforcing ribs parallel to each other and a plurality of second reinforcing ribs parallel to each other. Each of the first reinforcing ribs is perpendicular to each of the second reinforcing ribs. The first reinforcing ribs and the second reinforcing ribs are arranged vertically and horizontally to form a grid-shaped reinforcing structure.

[0008] According to some embodiments of the present utility model, the strengthening structure includes a strengthening cross beam connected between the two support plates.

[0009] According to some embodiments of the present utility model, a plurality of the strengthening cross beams are provided and arranged at intervals in sequence along the width direction of the trestle bridge.

[0010] According to some embodiments of the present utility model, the fastener includes an anchor bolt, and mounting holes for detachably connecting the anchor bolt are formed on each of the splicing plates.

[0011] According to some embodiments of the present utility model, each of the support plates is fixed to the bottom of the foundation pit through column base bolts.

[0012] According to some embodiments of the present utility model, guardrails are provided on both sides along the width direction of the trestle bridge above the plurality of support plates, and the guardrails extend along the length direction of the trestle bridge.

[0013] According to some embodiments of the present utility model, the splicing plate located directly above the side wall of the foundation pit is detachably and fixedly connected to the edge of the foundation pit.

[0014] The present utility model has at least the following beneficial effects:

[0015] (1) In the present utility model, the bridge deck assembly straddles above the foundation pit, and the splicing plate is supported by the support plates fixed in the foundation pit. The loads borne by the splicing plate are all transmitted to the bottom of the foundation pit through the support plates, which can avoid large loads on the edge of the foundation pit and eliminate the potential safety hazards of the foundation pit.

[0016] (2) In the present utility model, at least a part of the splicing plates at both ends is attached to the ground at the edge of the foundation pit, which can protect the soft soil under pressure at the edge of the foundation pit and can also increase the area of the edge of the foundation pit bearing the load, further improving the bearing capacity of the edge of the foundation pit.

[0017] (3) The two support plates are respectively arranged close to the opposite side walls inside the foundation pit, which can provide sufficient construction space inside the foundation pit.

[0018] (4) A strengthening structure is provided between the two support plates, which improves the support stability of each support plate. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 Structural schematic diagram of a support trestle for foundation pit provided by an embodiment of the present utility model;

[0021] Figure 2 For Figure 1 Top view schematic diagram of the support trestle in

[0022] Figure 3 For Figure 2 Partial enlarged schematic diagram at position A in

[0023] Figure 4 For Figure 1 Side view schematic diagram of the support trestle in

[0024] Figure 5 For Figure 1 Cross-sectional view of the splicing plate and / or support plate in

[0025] Figure 6 For Figure 5 Side view schematic diagram of the splicing plate and / or support plate in

[0026] Explanation of reference numerals:

[0027] 100 - Support trestle; 1 - Bridge deck assembly; 11 - Splicing plate; 111 - Connection panel; 112 - Reinforcing structure; 113 - First reinforcing rib; 114 - Second reinforcing rib; 12 - Fastener; 121 - Anchor bolt; 2 - Support component; 21 - Support plate; 22 - Reinforcing structure; 221 - Reinforcing cross beam; 3 - Guardrail; 4 - Foundation pit. Specific implementation manners

[0028] The technical solutions in the embodiments of the present utility model will be described clearly and completely below. Apparently, the described embodiments are only a part of the embodiments of the present utility model, rather than all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0030] In addition, if the descriptions such as "first", "second", etc. are involved in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text includes three parallel scenarios. Taking "A and / or B" as an example, it includes Scenario A, or Scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0031] The present utility model provides a support trestle for a foundation pit. Figures 1-6 This is a specific embodiment of the support trestle for a foundation pit provided by the present utility model.

[0032] As Figure 1 , an embodiment of the present utility model provides a support trestle 100 for a foundation pit, including a bridge deck assembly 1 and a support assembly 2 for supporting the bridge deck assembly 1. The bridge deck assembly 1 includes a plurality of splicing plates 11 that are sequentially spliced along the length direction of the trestle and span over the foundation pit 4. Adjacent two of the splicing plates 11 are detachably connected by fasteners 12. At least part of the splicing plates 11 at both ends are attached to the ground on the edge of the foundation pit 4. The support assembly 2 includes two support plates 21 arranged in the foundation pit 4. The two support plates 21 are respectively arranged close to the opposite side walls in the foundation pit 4. A strengthening structure 22 is provided between the two support plates 21. One end of each support plate 21 is fixedly arranged at the bottom of the foundation pit 4, and the other end is connected to each splicing plate 11.

[0033] In the present utility model, the bridge deck assembly 1 is spanned above the foundation pit 4 to serve as a bridge body to provide a traffic passage. Each of the support plates 21 is fixedly arranged in the foundation pit 4 to support the splicing plate 11. The load borne by the splicing plate 11 can be transmitted to the bottom of the foundation pit 4 through the support plate 21, thereby avoiding a large load on the edge of the foundation pit 4. At least a part of the splicing plates 11 at both ends is attached to the ground on the edge of the foundation pit 4, which can protect the loose soil on the edge of the foundation pit 4 and increase the area of the edge of the foundation pit 4 bearing the load, further improving the bearing capacity of the edge of the foundation pit 4 and eliminating the potential safety hazards existing in the foundation pit 4. The bridge deck assembly 1 is composed of a plurality of the splicing plates 11 spliced together, which can be applicable to foundation pits 4 with different widths and thus can be applicable to different application scenarios, with good practicability. Moreover, each of the splicing plates 11 is detachably connected by a fastener 12, and the damaged splicing plate 11 with potential safety hazards can be replaced according to the usage situation. The two support plates 21 are respectively arranged close to the opposite side walls in the foundation pit 4, which can provide sufficient construction space in the foundation pit. A strengthening structure 22 is arranged between the two support plates 21, improving the support stability of each of the support plates 21.

[0034] It can be understood that the support plate 21 generally extends vertically, which is beneficial to supporting the splicing plate. In practical applications, preferably, the area of the splicing plates 11 at both ends attached to the ground on the edge of the foundation pit 4 is larger than the suspended area.

[0035] It should be noted that the connection method between the support plate 21 and the splicing plate 11 is not specifically limited. During installation, they can be connected by welding, or other connecting components can be used for detachable connection, etc.

[0036] It can be understood that when the influence of the construction space in the foundation pit is not considered, a plurality of support struts are arranged at intervals along the length direction of the trestle between the two support plates 21. One end of each support strut is fixedly arranged at the bottom of the foundation pit 4, and the other end is connected to each splicing plate 11. By adding the support struts, the support stability of the bridge deck assembly 1 can be further improved. Preferably, each support strut is arranged at equal intervals in sequence along the length direction of the trestle. In this way, each support strut can evenly transmit the load transmitted by the splicing plate 11, avoiding the influence of load concentration on the support stability. In addition, the support strut generally extends vertically.

[0037] Specifically, the splicing plate 11 and the support plate 21 can be of the same steel plate structure to improve versatility. In some embodiments, the splicing plate 11 and / or the support plate 21 include two opposite connecting panels 111 and a reinforcing structure 112 disposed therebetween. By sandwiching the reinforcing structure 112 between the two connecting panels 111 in this form, the strength of the splicing plate 11 and / or the support plate 21 can be enhanced without increasing the thickness of the connecting panels 111. Furthermore, the amount of steel used can be saved, and the weight can be reduced to facilitate transportation.

[0038] Specifically, the form of the reinforcing structure 112 is not specifically limited. In some embodiments, the reinforcing structure 112 includes a plurality of first reinforcing ribs 113 parallel to each other and a plurality of second reinforcing ribs 114 parallel to each other. Each of the first reinforcing ribs 113 is perpendicular to each of the second reinforcing ribs 114, and the first reinforcing ribs 113 and the second reinforcing ribs 114 are arranged in a crisscross pattern to form a grid-like reinforcing structure. Through the grid-like reinforcing structure, the splicing plate 11 and / or the support plate 21 can play a role in synergistically transmitting loads in each extending direction of the ribs, greatly improving the strength of the splicing plate 11 and / or the support plate 21.

[0039] Specifically, since the splicing plate 11 and the support plate 21 are generally produced and processed using steel, in some embodiments, the reinforcing structure 112 is welded to the opposite end faces of the two connecting panels 111 respectively. That is, the two connecting panels 111 and each of the first reinforcing ribs 113 and the second reinforcing ribs 114 are all connected by welding, which will not affect the connection strength.

[0040] It should be noted that the strengthening structure 22 provided between every two adjacent support plates 21 is not specifically limited. Structures such as reinforcing plates can be added. However, considering the need to reduce the space occupied by the foundation pit 4, in some embodiments, the strengthening structure 22 includes a strengthening cross beam 221 connected between two adjacent support plates 21. The strengthening cross beam 221 can share a certain load and can also connect two adjacent support plates 21 to act as a whole, improving the torsional stiffness and thus the stability of the support. Preferably, a plurality of strengthening cross beams 221 are provided and are arranged at intervals in sequence along the width direction of the trestle bridge. In this way, the bearing capacity of the support trestle bridge 100 is further improved.

[0041] Specifically, the specific form of the fastener 12 is not limited and can be in the form of a fastening screw or a snap rivet. In some embodiments, the fastener 12 includes an anchor bolt 121, and mounting holes for detachably connecting the anchor bolt 121 are formed on each of the splicing plates 11. The anchor bolt 121 has a high load-bearing capacity and a simple installation process.

[0042] Specifically, in some embodiments, one end of two adjacent support plates 21 close to the splicing plate 11 is connected to the splicing position of two adjacent splicing plates 11. In this way, the support plate 21 at the splicing position can provide support here to share the vertical load, enhancing the stability of the connection between two adjacent splicing plates 11.

[0043] Specifically, in some embodiments, each support plate 21 is fixed to the bottom of the foundation pit by a column base bolt. By fixing in this way with the column base bolt, it can be avoided that one end of the support plate close to the bottom of the foundation pit generates relative movement with the bottom of the foundation pit, affecting the load-bearing capacity of the support trestle 100, and using the column base bolt does not occupy a large area at the bottom of the pit.

[0044] Specifically, in some embodiments, guardrails 3 are provided on both sides along the width direction of the trestle above multiple support plates 21, and the guardrails 3 extend along the length direction of the trestle. The guardrails 3 can play a protective role for the personnel walking on the trestle.

[0045] Specifically, in some embodiments, the splicing plate 11 directly above the side wall of the foundation pit 4 is detachably and fixedly connected to the edge of the foundation pit 4. It should be noted that the detachable and fixed connection method is not specifically limited and can be in the form of screwing, clamping or riveting. Preferably, a ground nail structure is provided at one end of the splicing plate 11 close to the ground directly above the side wall of the foundation pit. In this way, the ground nail structure can be nailed into the ground by pressure to achieve fixed connection, and the splicing plate can be removed from the edge of the foundation pit by pulling out the ground nail structure. Moreover, through this ground nail structure, the relative movement between the splicing plate 11 and the ground in the horizontal direction can be restricted, improving the safety of the support trestle 100.

[0046] Taking Figure 1 the trestle structure in [Example] as an example, the implementation principle of the support trestle 100 provided by the present invention: Two support plates 21 and one splicing plate are connected by welding to form an "inverted U" - shaped member, and then the welded "inverted U" - shaped member is hoisted into the foundation pit 4. Then, the left and right ends of the splicing plate 11 in the "inverted U" - shaped member are respectively connected to other splicing plates 11 through fasteners 12 until the splicing plates 11 at both ends are attached to the ground at the edge of the foundation pit, so as to complete the construction of the support trestle 100.

[0047] It can be understood that the width of the support trestle 100 can be achieved by processing the splicing plates 11 with corresponding widths, or the bridge deck assembly 1 can be composed of a plurality of the splicing plates 11 spliced in sequence along the length and width directions of the trestle. The width of the support trestle 100 is adjusted according to the number and the width of the splicing plates 11 spliced along the width direction of the trestle.

[0048] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A support trestle for a foundation pit, characterized in that Comprising: A bridge deck assembly, including a plurality of splicing plates that are sequentially spliced along the length direction of the trestle and span above the foundation pit, and two adjacent splicing plates are detachably connected by fasteners, and the splicing plates at both ends are at least partially attached to the ground at the edge of the foundation pit; and, A support assembly for supporting the bridge deck assembly, including two support plates arranged in the foundation pit, the two support plates are respectively arranged close to the opposite side walls in the foundation pit, a strengthening structure is arranged between the two support plates, one end of each support plate is fixedly arranged at the bottom of the foundation pit, and the other end is connected to each splicing plate.

2. The supporting trestle for foundation pit according to claim 1, characterized in that The splicing plate and / or the support plate includes two opposite connection panels and a reinforcement structure arranged between the two.

3. The supporting trestle for foundation pit according to claim 2, wherein, The reinforcement structure is welded to the opposite end faces of the two connection panels respectively.

4. The supporting trestle for foundation pit according to claim 2, wherein, The reinforcement structure includes a plurality of mutually parallel first reinforcement ribs and a plurality of mutually parallel second reinforcement ribs, each of the first reinforcement ribs is perpendicular to each of the second reinforcement ribs, and the first reinforcement ribs and the second reinforcement ribs are arranged vertically and horizontally to form a grid-shaped reinforcement structure.

5. The supporting trestle for foundation pit according to claim 1, characterized in that The strengthening structure includes a strengthening cross beam connected between the two support plates.

6. The supporting trestle for foundation pit according to claim 5, wherein, A plurality of the strengthening cross beams are provided and are sequentially arranged at intervals along the width direction of the trestle.

7. The supporting trestle for foundation pit according to claim 1, characterized in that, The fastener includes an anchor bolt, and mounting holes for detachably connecting the anchor bolts are formed on each of the splicing plates.

8. The supporting trestle for foundation pit according to claim 1, characterized in that, Each of the support plates is fixed to the bottom of the foundation pit by column base bolts.

9. The supporting trestle for foundation pit according to claim 1, characterized in that Guardrails are provided on both sides along the width direction of the trestle above the plurality of support plates, and the guardrails extend along the length direction of the trestle.

10. The supporting trestle for foundation pit according to claim 1, characterized in that, The splicing plate directly above the side wall of the foundation pit is detachably and fixedly connected to the edge of the foundation pit.

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