A supporting device for a trench in a soil foundation
Patent Information
- Application Number
- CN202522523997.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-27
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-11-27
AI Technical Summary
[0004]本申请的目的在于克服上述技术不足，提出一种用于土质地基沟槽的支护装置，解决现有技术中施工效率低，施工周期长，施工成本高的技术问题
[0015]与现有技术相比，本申请提供的一种用于土质地基沟槽的支护装置，通过立柱组件、横梁组件和横撑组件形成整体支护框架，利用支护蒙板与立柱和横梁连接，用于支挡沟槽两侧的土体，从而对土质地基沟槽形成稳定支护结构，同时基于土质地基的实际情况，在立柱的底部额外设置刃脚组件，刃脚组件的端部为尖角，能够减小立柱压入土体的阻力，能够实现先压后挖，边压边挖的施工流程，有利于减少周边土体的扰动，提升安装立柱的效率，缩短施工周期，并且支护装置的结构简单，能够重复使用还能够降低施工成本。
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Figure CN224833764U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of foundation support technology, specifically to a support device for soil foundation trenches. Background Technology
[0002] In municipal engineering pipeline construction, especially pipeline renovation and new pipeline construction in urban areas, the burial depth is often shallow (within 3m). However, the situation of pipelines, cables, buildings, etc. on both sides is complicated, or excavation along the road is often limited by traffic conditions, making slope excavation impossible. Vertical excavation poses a greater safety risk.
[0003] Currently, the commonly used construction support methods, such as sheet piles, steel pipe (section steel) piles, and anchor bolt support, are complex to construct and involve many procedures. They also require the assistance of large and medium-sized machinery and a large construction working area. The reuse rate of support materials is low, the construction cycle is long, the overall construction cost is high, and the economic efficiency is poor. Utility Model Content
[0004] The purpose of this application is to overcome the above-mentioned technical deficiencies and propose a support device for soil foundation trenches, which solves the technical problems of low construction efficiency, long construction period and high construction cost in the prior art.
[0005] To achieve the above-mentioned technical objectives, this application adopts the following technical solution: In a first aspect, this application provides a support device for soil foundation trenches, comprising a column assembly, a beam assembly, a cross brace assembly, a support cover plate, and a cutting edge assembly. The column assembly includes two rows of columns spaced apart along the width of the trench, each row including two columns spaced apart along the length of the trench; the beam assembly includes a beam connecting two adjacent columns along the length of the trench; the cross brace assembly includes cross braces connected to the two rows of columns along the width of the trench; the support cover plate is connected to the columns and beams respectively for retaining soil; the cutting edge assembly is connected to the bottom of the columns and assists in pressing the columns into the soil.
[0006] In some embodiments, the cutting edge device includes an angle steel and a sealing plate. The angle steel includes a first side and a second side. The first side is connected to the bottom of the column. The sealing plate is connected to the first side and the second side respectively. The angle α between the sealing plate and the second side is an acute angle.
[0007] In some embodiments, the angle α between the sealing plate and the second side satisfies α≤30°.
[0008] In some embodiments, the beam assembly includes a plurality of beams spaced apart along the depth direction of the trench; the brace assembly includes a plurality of braces spaced apart along the depth direction of the trench.
[0009] In some embodiments, the crossbeam assembly includes a first crossbeam and a second crossbeam, the first crossbeam being connected to the top of the column, and the second crossbeam being spaced apart from the first crossbeam by a distance L1, satisfying 1600mm≤L1≤2000mm.
[0010] In some embodiments, the support cover is connected to the first crossbeam, the second crossbeam, and the column respectively. In the depth direction of the trench, the bottom of the support cover is higher than the bottom of the column, and the distance L2 between the bottom of the support cover and the bottom of the column satisfies 500mm≤L2≤800mm.
[0011] In some embodiments, a cutting edge assembly is provided on the side of the second crossbeam facing away from the first crossbeam, and the cutting edge assembly is connected to the second crossbeam and the support cover plate respectively.
[0012] In some embodiments, the cross bracing assembly includes a first cross brace and a second cross brace. The first cross brace is connected to the top of the column, and the second cross brace is spaced apart from the first cross brace by a distance L3, satisfying 1000mm≤L3≤1500mm.
[0013] In some embodiments, the columns and beams are each provided with hooks for hoisting.
[0014] In some embodiments, along the length of the trench, the distance T1 between two adjacent columns satisfies 1200mm≤T1≤1600mm; along the width of the trench, the distance T2 between two adjacent columns satisfies 1200mm≤T2≤1400mm.
[0015] Compared with the prior art, the support device for soil foundation trenches provided in this application forms an overall support frame through column assemblies, beam assemblies, and cross brace assemblies. The support cover plate is connected to the column and beam to support the soil on both sides of the trench, thereby forming a stable support structure for the soil foundation trench. At the same time, based on the actual situation of the soil foundation, a cutting edge assembly is additionally set at the bottom of the column. The end of the cutting edge assembly is a sharp corner, which can reduce the resistance of the column pressing into the soil. It can realize the construction process of pressing before excavation and pressing and excavating simultaneously, which helps to reduce the disturbance of the surrounding soil, improve the efficiency of column installation, shorten the construction cycle, and the support device has a simple structure, can be reused, and can reduce construction costs. Attached Figure Description
[0016] Figure 1 This is a top view of a support device provided in an embodiment of this application; Figure 2 This is a front view of a support device provided in an embodiment of this application; Figure 3 yes Figure 1 A sectional view of section AA; Figure 4 yes Figure 2A sectional view of section BB; Figure 5 yes Figure 4 A magnified schematic diagram of part C in the middle.
[0017] Explanation of reference numerals in the attached figures: 100. Support device; 200. Soil; 300. Pipeline; 110. Column assembly; 111. Column; 120. Crossbeam assembly; 121. First crossbeam; 122. Second crossbeam 130. Cross brace assembly; 131. First cross brace; 132. Second cross brace 140. Support panel; 150. Cutting edge assembly; 151. Angle steel; 1511. First side edge; 1512. Second side edge; 152. Sealing plate 160. Hook. Detailed Implementation
[0018] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.
[0019] In municipal engineering pipeline construction, especially pipeline renovation and new pipeline construction in urban areas, the burial depth is often shallow (within 3m), but the pipelines, cables, houses and other conditions on both sides are complicated, making it impossible to carry out slope excavation.
[0020] In some embodiments, steel sheet piles, steel pipe (section steel) piles, anchor bolts, and other methods are used to support pipeline trenches. This method has a complex construction process and many procedures, resulting in low construction efficiency, long construction period, and high construction cost.
[0021] To address the technical problems of low construction efficiency, long construction period, and high construction cost, this application provides a support device for soil foundation trenches. The device forms an overall support frame through column assemblies, beam assemblies, and cross brace assemblies. Support panels are connected to the columns and beams to support the soil on both sides of the trench, thus creating a stable support structure for the soil foundation trench. Furthermore, based on the actual conditions of the soil foundation, a cutting edge assembly is additionally installed at the bottom of the column. The cutting edge assembly has a pointed end, which reduces the resistance of the column pressing into the soil. This allows for a construction process of pressing before excavation, or pressing and excavating simultaneously, which helps reduce disturbance to the surrounding soil, improves the efficiency of column installation, shortens the construction period, and the support device has a simple structure, is reusable, and further reduces construction costs.
[0022] It should be noted that the support device of this application is used for, but not limited to, pipeline foundation trench support in municipal engineering. For ease of explanation, this application will only use the application of the support device in pipeline foundation trench support in municipal engineering as an example. The principle of the support device applied to trench support in other soil foundations is essentially the same as that applied to pipeline foundation trench support in municipal engineering, and will not be elaborated here.
[0023] This application provides a support device 100 for trenches in soil foundations, such as... Figures 1 to 4 As shown. The support device 100 includes a column assembly 110, a beam assembly 120, a cross brace assembly 130, a support cover plate 140, and a cutting edge assembly 150. The column assembly 110 includes two rows of columns spaced apart along the width of the trench, and each row of columns includes multiple columns 111 spaced apart along the length of the trench; the beam assembly 120 includes a cross beam connecting two adjacent columns 111 along the length of the trench; the cross brace assembly 130 includes a cross brace connected to the two rows of columns along the width of the trench; the support cover plate 140 is connected to the columns 111 and the cross beam respectively, and is used to support the soil 200; the cutting edge assembly 150 is connected to the bottom of the columns 111, and the cutting edge assembly 150 is used to assist the columns 111 in pressing into the soil 200.
[0024] To facilitate description and understanding, a coordinate system is established for orientation. The width direction of the trench is... Figure 1 The X direction in the text is referred to hereafter as the width direction X of the trench; the length direction of the trench is... Figure 1 The Y direction in the text will be referred to as the length direction Y of the trench; the depth direction of the trench is... Figure 2 The Z direction in the text will be referred to as the depth direction Z of the trench in the following text.
[0025] In this embodiment, support structures are provided on both sides along the length of the trench. The support structures on both sides are identical; for ease of understanding, the description will focus on the support structure on one side.
[0026] In this embodiment, two columns 111 are arranged at intervals along the length Y of the trench. The distance T1 between the two columns 111 is, for example, 1200mm ≤ T1 ≤ 1600mm, but can specifically be 1200mm, 1300mm, 1500mm, 1600mm, etc. A crossbeam connects the two columns 111, and the number of crossbeams can be determined according to the actual situation. The columns 111 and the crossbeams form a support frame on one side of the trench. The support cover plate 140 is connected to the side of the columns 111 and the crossbeams facing the soil 200.
[0027] In this embodiment, the specifications and dimensions of the column 111, the crossbeam, and the support cover plate 140 can be determined according to actual needs. For example, the column 111 is made of 80mm×100mm rectangular square steel, the length of the column 111 is 3.0m, the crossbeam is 16 channel steel, and the support cover plate 140 is 5mm steel plate. Connection methods include, but are not limited to, bolted connections and welding. For example, both ends of the crossbeam are welded to the column 111, and the support cover plate 140 is welded to both the column 111 and the crossbeam.
[0028] In this embodiment, a cutting edge assembly 150 is connected to the bottom of the column 111. The cutting edge assembly 150 has a pointed structure to facilitate the pressing of the column 111 into the soil 200. The connection method between the cutting edge assembly 150 and the bottom of the column 111 is not limited. For example, the cutting edge assembly 150 and the bottom of the column 111 can be connected by bolt fixing; or the cutting edge assembly 150 and the bottom of the column 111 can be connected by welding.
[0029] In this embodiment, the support structures on both sides of the trench are identical. The spacing T2 between the two rows of columns 111 along the width direction X of the trench is, for example, 1200mm ≤ T2 ≤ 1400mm, but specifically it can be 1200mm, 1300mm, 1400mm, etc. The two rows of columns 111 are connected by cross braces. The number and specifications of the cross braces can be determined according to actual needs. For example, the cross braces are made of 16 channel steel and are connected to the columns 111 by welding.
[0030] It should be noted that during on-site construction, the support device 100 was pre-pressed into the foundation pit in layers with static pressure before excavation. Excavation was carried out while pressing each layer. Once the support device 100 was embedded at the designed bottom elevation of the foundation pit, the excavation of the soil within the pit was completed. The support device 100 provides support to the surrounding soil 200, effectively ensuring the safety of surrounding structures and the safety of personnel, materials, and machinery working within the foundation pit. Furthermore, multiple sets of support devices 100 can be used simultaneously and in a cyclical manner, efficiently completing the excavation and shaping of shallow trenches for pipelines in soil foundations, and facilitating pipeline installation.
[0031] An overall support frame is formed by column assembly 110, beam assembly 120, and cross brace assembly 130. The support cover plate 140 is connected to the column 111 and beam to support the soil 200 on both sides of the trench, thereby forming a stable support structure for the soil foundation trench. At the same time, based on the actual situation of the soil foundation, an additional cutting edge assembly 150 is set at the bottom of the column 111. The end of the cutting edge assembly 150 is a sharp corner, which can reduce the resistance of the column 111 pressing into the soil 200. It can realize the construction process of pressing before excavating and pressing and excavating simultaneously, which helps to reduce the disturbance of the surrounding soil, improve the efficiency of column installation, shorten the construction cycle, and the support device has a simple structure, can be reused, and can reduce construction costs.
[0032] In some embodiments, such as Figures 3 to 5 As shown, the cutting edge assembly 150 includes an angle steel 151 and a sealing plate 152. The angle steel 151 includes a first side 1511 and a second side 1512. The first side 1511 is connected to the bottom of the column 111. The sealing plate 152 is connected to the first side 1511 and the second side 1512 respectively. The included angle α between the sealing plate 152 and the second side 1512 is an acute angle.
[0033] In this embodiment, the angle steel 151 is an L-shaped steel material, including a first side 1511 and a second side 1512. The sealing plate 152 is made of metal and is welded to the first side 1511 and the second side 1512 respectively, thereby forming a triangular structure. The first side 1511 is connected to the bottom of the column 111, that is, one side of the triangular structure is connected to the bottom of the column 111. The connection includes, but is not limited to, bolt connection, welding, etc. The connection position of the sealing plate 152 and the second side 1512 together forms a sharp corner for pressing into the soil 200, which facilitates the support device 100 to quickly press into the soil 200.
[0034] In some embodiments, such as Figure 5 As shown, the angle α between the sealing plate 152 and the second side 1512 satisfies α≤30°.
[0035] In this embodiment, the included angle α between the sealing plate 152 and the second side 1512 can be 30°, 28°, 25°, 23°, 22°, 20°, or any value between two adjacent values mentioned above. By designing the included angle α to be less than or equal to 30°, the resistance of the column 111 being pressed into the soil 200 is minimized as much as possible, so as to facilitate the pressing of the column 111 into the soil 200.
[0036] In some embodiments, such as Figure 1 and Figure 2 As shown, the crossbeam assembly 120 includes multiple crossbeams, which are arranged at Z-intervals along the depth direction of the trench; the cross brace assembly 130 includes multiple cross braces, which are arranged at Z-intervals along the depth direction of the trench.
[0037] In this embodiment, the specific number of crossbeams and cross braces is not limited, as long as the structural strength requirements are met. For example, the crossbeam assembly 120 includes 3 crossbeams, which are evenly spaced along the depth direction Z of the trench; or the crossbeam assembly 120 includes 3 cross braces, which are evenly spaced along the depth direction Z of the trench.
[0038] In some embodiments, such as Figure 2As shown, the crossbeam assembly 120 includes a first crossbeam 121 and a second crossbeam 122. The first crossbeam 121 is connected to the top of the column 111, and the second crossbeam 122 is spaced apart from the first crossbeam 121 by a distance L1, which satisfies 1600mm≤L1≤2000mm.
[0039] In this embodiment, the crossbeam assembly 120 includes two crossbeams, namely a first crossbeam 121 and a second crossbeam 122. The first crossbeam 121 is connected to the top of the column 111, for example, by welding. The second crossbeam 122 is located below the first crossbeam 121, and the second crossbeam 122 is spaced apart from the first crossbeam 121 by a distance L1, for example, 1600mm, 1700mm, 1800mm, 2000mm, etc. The first crossbeam 121 and the second crossbeam 122 form a stable support with the column 111 by being fixed vertically. At the same time, they can also be adapted to the support cover plate 140 to form a continuous retaining surface, which ensures the support strength and avoids the support device 100 from being too heavy due to excessively dense crossbeams.
[0040] In some embodiments, such as Figure 2 and Figure 3 As shown, the support plate 140 is connected to the first crossbeam 121, the second crossbeam 122 and the column 111 respectively. In the depth direction Z of the trench, the bottom of the support plate 140 is higher than the bottom of the column 111. The distance L2 between the bottom of the support plate 140 and the bottom of the column 111 satisfies 500mm≤L2≤800mm.
[0041] In this embodiment, the spacing L2 can specifically be 500mm, 600mm, 700mm, 800mm, or any value between two adjacent values mentioned above. By designing the bottom of the support plate 140 to be higher than the bottom of the column 111, the protection requirements are met, while the open space at the bottom of the support plate 140 reduces the resistance to static pressure pressing into the column 111, making it particularly suitable for scenarios with denser underlying soil. This also reduces material usage and structural weight, balancing lightweight design with support strength.
[0042] In some embodiments, such as Figure 4 As shown, the second crossbeam 122 has a cutting edge assembly 150 on the side facing away from the first crossbeam 121. The cutting edge assembly 150 is connected to the second crossbeam 122 and the support cover plate 140 respectively.
[0043] In this embodiment, a cutting edge assembly 150 is also arranged below the second crossbeam 122. The structure of the cutting edge assembly 150 below the second crossbeam 122 is the same as that of the cutting edge assembly 150 at the bottom of the column 111, and will not be described again here. By arranging the cutting edge assembly 150 below the second crossbeam 122, the frictional force of the second crossbeam 122 pressing into the soil 200 can be reduced, thus reducing soil disturbance.
[0044] In some embodiments, such as Figure 3 As shown, the cross brace assembly 130 includes a first cross brace 131 and a second cross brace 132. The first cross brace 131 is connected to the top of the column 111, and the second cross brace 132 is spaced apart from the first cross brace 131 by a distance L3, which satisfies 1000mm≤L3≤1500mm.
[0045] In this embodiment, the cross bracing assembly includes two cross braces, namely a first cross brace 131 and a second cross brace 132. The first cross brace 131 is connected to the top of the column 111, for example, by welding. The second cross brace 132 is located below the first cross brace 131, and the second cross brace 132 is spaced apart from the first cross brace 131 by a distance L1, for example, 1000mm, 1200mm, 1300mm, 1500mm, etc. By selecting double-row cross braces according to the trench depth and controlling the vertical spacing between 1000mm and 1500mm, it can adapt to the lateral pressure requirements of soil at different depths, evenly distribute the load, prevent deformation of the column 111, and avoid excessive weight of the support device 100 due to overly dense cross braces.
[0046] In some embodiments, such as Figure 2 As shown, the column 111 and the crossbeam are respectively equipped with hooks 160 for hoisting.
[0047] In this embodiment, the crossbeam includes a first crossbeam 121 and a second crossbeam 122. Hooks 160 are provided on the column 111, the first crossbeam 121, and the second crossbeam 122. The number, shape, and installation position of the hooks 160 are not limited. For example, circular hooks are provided on the top of the crossbeam and on both sides of the column 111. The design of the hooks 160 facilitates the hoisting of the column 111 and the crossbeam.
[0048] In some embodiments, combined with Figures 1 to 5 As shown, the support device 100 includes a column assembly 110, a beam assembly 120, a cross brace assembly 130, a support cover plate 140, and a cutting edge assembly 150. The column assembly 110 includes four columns 111. Along the length Y of the trench, the spacing T1 between two columns 111 is 1500mm. Along the width X of the trench, the spacing T2 between two columns 111 is 1400mm. The beam assembly 120 includes a first beam 121 and a second beam 122. The cross brace assembly 130 includes a first cross brace 131 and a second cross brace 132. The four columns 111, the beam assembly 120, the cross brace assembly 130, and the support cover plate 140 form a set of support devices 100. Multiple support devices 100 can be set along the length Y of the trench. Each support device 100 weighs no more than 0.7t (ton), making transportation convenient. During construction, multiple support devices 100 can be used simultaneously in a cyclical manner, which can efficiently complete the excavation of shallow trenches for pipelines in soil foundations and the installation of pipelines.
[0049] The specific embodiments described above do not constitute a limitation on the scope of protection of this application. Any other corresponding changes and modifications made based on the technical concept of this application should be included within the scope of protection of the claims of this application.
Claims
1. A support device for trenches in soil foundations, characterized in that, include: The column assembly includes two rows of columns spaced apart along the width direction of the trench, each row of columns including two columns spaced apart along the length direction of the trench; A crossbeam assembly, comprising a crossbeam connecting two adjacent columns along the length of the trench; A cross brace assembly, comprising a cross brace connected to the two columns along the width direction of the groove; The support panel is connected to the column and the crossbeam respectively, and is used to support the soil. A cutting edge assembly is connected to the bottom of the column, and the cutting edge assembly is used to assist the column in pressing into the soil.
2. The support device according to claim 1, characterized in that, The cutting edge assembly includes an angle steel and a sealing plate. The angle steel includes a first side and a second side. The first side is connected to the bottom of the column. The sealing plate is connected to both the first side and the second side. The angle α between the sealing plate and the second side is an acute angle.
3. The support device according to claim 2, characterized in that, The angle α between the sealing plate and the second side shall satisfy α≤30°.
4. The support device according to claim 1, characterized in that, The beam assembly includes a plurality of beams, which are spaced apart along the depth direction of the trench. The cross brace assembly includes a plurality of cross braces, which are spaced apart along the depth direction of the groove.
5. The support device according to claim 4, characterized in that, The crossbeam assembly includes a first crossbeam and a second crossbeam. The first crossbeam is connected to the top of the column, and the second crossbeam is spaced apart from the first crossbeam by a distance L1, which satisfies 1600mm≤L1≤2000mm.
6. The support device according to claim 5, characterized in that, The support panel is connected to the first crossbeam, the second crossbeam, and the column respectively. In the depth direction of the trench, the bottom of the support panel is higher than the bottom of the column, and the distance L2 between the bottom of the support panel and the bottom of the column satisfies 500mm≤L2≤800mm.
7. The support device according to claim 5, characterized in that, The second crossbeam has a cutting edge assembly on the side facing away from the first crossbeam, and the cutting edge assembly is connected to the second crossbeam and the support cover plate respectively.
8. The support device according to claim 4, characterized in that, The cross bracing assembly includes a first cross brace and a second cross brace. The first cross brace is connected to the top of the column, and the second cross brace is spaced apart from the first cross brace by a distance L3, satisfying 1000mm≤L3≤1500mm.
9. The support device according to claim 1, characterized in that, The columns and beams are each equipped with hooks for hoisting.
10. The support device according to claim 1, characterized in that, Along the length of the trench, the distance T1 between the two columns satisfies 1200mm≤T1≤1600mm; Along the width direction of the trench, the distance T2 between the two columns satisfies 1200mm≤T2≤1400mm.