Multi-section spliced drainage ditch foundation structure
Patent Information
- Application Number
- CN202522315039.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-31
- Publication Date
- 2026-09-25
- Estimated Expiration
- 2035-10-31
AI Technical Summary
[0003]然而，现有分段拼接式排水渠地基在实际应用中仍存在一些问题，其一，现有拼接式排水渠的砼板通常仅通过上下拼接板的简单搭接实现连接，在长期水流冲击、土壤侧向压力变化或车辆荷载作用下，砼板易沿排水渠水流方向发生偏移、错动，这种位移不仅会导致相邻砼板拼接缝扩大，引发雨水渗漏，还可能造成砼板边缘磕碰损坏，进而破坏整个排水渠的连续性，增加后期维修频次与成本
一、通过限位条形块与限位条形槽的嵌合结构，实现砼板与基层的刚性定位，砼板底部的限位条形块直接嵌入基层底部内壁预设的限位条形槽内，形成沿排水渠水流方向、垂直水流方向的双向约束，可有效抵御暴雨期高流速水流的冲击推力、季节性土壤冻融产生的侧向挤压力，以及道路下方排水渠承受的行车震动干扰，避免砼板发生偏移、错动或拼接缝扩大，从根本上减少了因砼板位移导致的渗漏问题，同时防止砼板边缘磕碰损坏，保障排水渠整体结构的连续性与完整性，显著降低后期维修频次与成本。
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Figure CN224799554U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of drainage ditch technology, and in particular to a multi-segment spliced drainage ditch foundation structure. Background Technology
[0002] In municipal drainage, road engineering, and farmland irrigation, drainage ditches serve as crucial rainwater diversion and drainage facilities. The stability of their foundation structure directly determines the long-term service life and functional reliability of the drainage system. Currently, most mainstream drainage ditch foundations adopt either monolithic cast-in-place or segmented splicing structures. Among these, segmented splicing structures are more widely used in long-distance drainage projects due to their advantages such as convenient construction and low maintenance costs.
[0003] However, existing segmented and spliced drainage ditch foundations still have some problems in practical applications. Firstly, the concrete slabs of existing spliced drainage ditches are usually connected by simply overlapping the upper and lower splice slabs. Under long-term water flow impact, changes in soil lateral pressure, or vehicle loads, the concrete slabs are prone to shifting and misaligning along the water flow direction of the drainage ditch. This displacement not only causes the joints between adjacent concrete slabs to widen, leading to rainwater leakage, but may also cause damage to the edges of the concrete slabs, thereby disrupting the continuity of the entire drainage ditch and increasing the frequency and cost of later maintenance.
[0004] Secondly, the base layer of drainage ditches is mostly composed of multiple layers such as the original soil layer, the cushion layer, and the impermeable layer. In soft soil foundations, areas with fluctuating groundwater levels, or long-term load scenarios, uneven settlement is prone to occur due to soil compression and aging and damage of the impermeable layer. The concrete slab relies entirely on the base layer for support without any additional auxiliary structures, making it prone to sinking with the base layer. This can lead to depressions at the bottom of the drainage ditch, water accumulation, and even concrete slab breakage. This is more pronounced in areas with complex geology and may also trigger a chain of accidents such as roadbed collapse and road surface cracking, threatening the safety of surrounding infrastructure.
[0005] Therefore, it is necessary to provide a multi-segment spliced drainage ditch foundation structure to solve the above-mentioned technical problems. Utility Model Content
[0006] This utility model provides a multi-segment spliced drainage ditch foundation structure, which solves the problems mentioned in the background art.
[0007] To solve the above-mentioned technical problems, this utility model provides a multi-segment spliced drainage ditch foundation structure, including: a base layer, a load-bearing main body, and auxiliary foundations. Multiple load-bearing main bodies are provided and spliced together with each other. The base layer is laid under the load-bearing main body, and two auxiliary foundations are provided and located on both sides of the base layer. The bottom of the load-bearing body is fixedly connected with several limiting strip blocks, and the inner wall of the bottom of the base layer is provided with several limiting strip grooves. The limiting strip blocks can be fitted into the limiting strip grooves to prevent the load-bearing body from shifting on the base layer. Auxiliary rods are installed on both sides of the main body, and slots are opened on the top of the auxiliary foundation. The auxiliary rods can be inserted into the slots to provide upward support to the main body when the base settles.
[0008] Preferably, the supporting body includes a concrete slab, an upper splicing plate, and a lower splicing plate. The concrete slab is located above the base layer and is in close contact with the base layer. The upper splicing plate and the lower splicing plate are located at both ends of the concrete slab, and the upper splicing plates and the lower splicing plates of adjacent concrete slabs are adapted to each other for splicing.
[0009] Preferably, the limiting strip blocks are all fixedly connected to the bottom of the concrete slab, and the limiting strip blocks correspond one-to-one with the limiting strip grooves.
[0010] Preferably, the auxiliary rod is fixedly connected to the outer walls of both sides of the concrete slab, and through holes corresponding to the auxiliary rods are opened on the inner walls of both sides of the base layer. The end of the auxiliary rod away from the concrete slab can pass through the through hole and be inserted into the slot.
[0011] Preferably, the base layer is concave, and from bottom to top, the base layer consists of the original soil layer, the cushion layer, the impermeable layer, and the reinforcement layer. The cushion layer is a leveling layer used to ensure the flatness of the top of the base layer. The impermeable layer is used to prevent water from seeping down and affecting the stability of the base layer. The reinforcement layer is used to improve the overall load-bearing strength of the base layer.
[0012] Preferably, the auxiliary foundation is made of reinforced concrete, and the depth of the auxiliary foundation buried in the soil on both sides of the base layer is not less than 1.5 times the thickness of the base layer itself.
[0013] Preferably, the auxiliary rod is made of metal and its outer surface is coated with an anti-corrosion coating made of epoxy resin to prevent the auxiliary rod from rusting when it is in soil or a humid environment for a long time.
[0014] Preferably, both the upper and lower splicing plates are provided with sealing strips on their splicing surfaces, and the sealing strips are made of EPDM rubber.
[0015] Compared with related technologies, the multi-segment spliced drainage ditch foundation structure provided by this utility model has the following beneficial effects: 1. By using the interlocking structure of limiting strip blocks and limiting strip grooves, rigid positioning of the concrete slab and the base layer is achieved. The limiting strip blocks at the bottom of the concrete slab are directly embedded in the pre-set limiting strip grooves on the inner wall of the base layer, forming a two-way constraint along the direction of water flow in the drainage ditch and perpendicular to the direction of water flow. This can effectively resist the impact thrust of high-velocity water flow during rainstorms, the lateral squeezing force generated by seasonal soil freeze-thaw, and the interference of traffic vibrations on the drainage ditch under the road. It avoids the concrete slab from shifting, moving, or the joints from widening, fundamentally reducing leakage problems caused by concrete slab displacement. At the same time, it prevents the edges of the concrete slab from being damaged by impacts, ensuring the continuity and integrity of the overall structure of the drainage ditch, and significantly reducing the frequency and cost of later maintenance.
[0016] Second, relying on the coordinated support system of auxiliary rods, through holes, and auxiliary foundations, a secondary support defense line can be constructed after the base course settles. The auxiliary foundation is pre-embedded in the soil on both sides of the base course, forming stable fixed support points. The auxiliary rods on both sides of the concrete slab pass through the through holes in the side wall of the base course and are directly inserted into the slots at the top of the auxiliary foundation. This allows the load-bearing structure to simultaneously receive direct support from the base course and lateral auxiliary support from the auxiliary foundation. When the base course settles unevenly due to factors such as soft soil foundation compression or aging and damage to the impermeable layer, the auxiliary foundation can apply an upward supporting force to the concrete slab through the auxiliary rods, counteracting the tendency of the concrete slab to sink with the base course. This effectively avoids a chain of engineering accidents such as roadbed collapse and pavement cracking caused by base course settlement and improves the long-term reliability of the drainage system. Attached Figure Description
[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the structure of this utility model; Figure 3 This is a schematic diagram of the structure of this utility model; Figure 4 This is a schematic diagram of the structure of this utility model; Figure 5 This is a schematic diagram of the structure of this utility model; Figure 6 for Figure 5 The enlarged schematic diagram of part A is shown.
[0018] The following are the labels in the diagram: 10, base layer; 101, through hole; 102, limiting strip groove; 20, load-bearing main body; 201, concrete slab; 202, upper splicing plate; 203, lower splicing plate; 21, auxiliary rod; 22, limiting strip block; 30, auxiliary foundation; 301, slot. Detailed Implementation
[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0020] Please refer to the following: Figures 1 to 6 A multi-segment spliced drainage ditch foundation structure includes: a base layer 10, a load-bearing main body 20, and auxiliary foundations 30. Multiple load-bearing main bodies 20 are provided and spliced together. The base layer 10 is laid below the load-bearing main bodies 20. Two auxiliary foundations 30 are provided and located on both sides of the base layer 10. The load-bearing main bodies 20 can cooperate with the base layer 10 to prevent the load-bearing main bodies 20 from shifting on top of the base layer 10. At the same time, the auxiliary foundations 30 can provide auxiliary support for the load-bearing main bodies 20 to prevent the load-bearing main bodies 20 from sinking due to the settlement of the base layer 10.
[0021] The base layer 10 is concave, and several through holes 101 are provided on the inner walls of both sides of the base layer 10. A limiting strip groove 102 is also provided on the inner wall of the bottom of the base layer 10. The base layer 10 consists of the original soil layer, the cushion layer (leveling layer), the seepage prevention layer and the reinforcement layer from bottom to top.
[0022] The load-bearing body 20 includes a concrete slab 201, an upper splicing plate 202, and a lower splicing plate. The concrete slab 201 is located above the base layer 10 and is in close contact with the base layer 10. The upper splicing plate 202 and the lower splicing plate 203 are located at both ends of the concrete slab 201, respectively. The upper splicing plate 202 and the lower splicing plate 203 of adjacent concrete slabs 201 can cooperate with each other to splice adjacent concrete slabs 201 together. The splicing surfaces of the splicing plate and the lower splicing plate 203 are provided with sealing strips, which are made of EPDM rubber.
[0023] Several auxiliary rods 21 are fixedly connected to the outer walls on both sides of the concrete slab 201. Several limiting strip blocks 22 are also fixedly connected to the bottom of the concrete slab 201. The limiting strip blocks 22 correspond to the limiting strip grooves 102 and can be embedded in the limiting strip grooves 102 to prevent the concrete slab 201 from shifting in the drainage ditch.
[0024] The top of the auxiliary foundation 30 is provided with a slot 301, which corresponds to the auxiliary rod 21. The auxiliary rod 21 can pass through the through hole 101 and be inserted into the slot 301. The auxiliary foundation 30 is pre-buried in the soil. When the concrete slab 201 is installed, the auxiliary rod 21 at the bottom of the concrete slab 201 passes through the through hole 101 and is inserted into the slot 301 for auxiliary support. When the base layer 10 settles, it can provide auxiliary support for the concrete slab 201 to prevent it from sinking. The auxiliary foundation 30 is made of reinforced concrete, and the depth of the auxiliary foundation 30 buried in the soil on both sides of the base layer 10 is not less than 1.5 times the thickness of the base layer 10 itself, so as to ensure that the auxiliary foundation 30 forms a stable and fixed support point in the soil and meets the auxiliary support requirements for the load-bearing body 20. The auxiliary rod 21 is made of metal, and the outer surface of the auxiliary rod 21 is coated with an anti-corrosion coating made of epoxy resin to prevent the auxiliary rod 21 from rusting in the soil or humid environment for a long time and to extend the service life of the auxiliary rod 21.
[0025] The working principle of the multi-segment spliced drainage ditch foundation structure provided by this utility model is as follows: The base layer 10 adopts a four-layer concave structure consisting of the original soil layer, a cushion layer, an impermeable layer, and a reinforcement layer. From bottom to top, it sequentially achieves the functions of foundation bearing, flatness calibration, waterproofing and seepage prevention, and strength enhancement. Among them, the cushion layer ensures a tight fit between the top of the base layer 10 and the main bearing 20; the impermeable layer prevents rainwater infiltration that could soften the soil; and the reinforcement layer enhances the overall load-bearing capacity and provides a stable bottom support surface for the main bearing 20. The main bearing 20 consists of a concrete slab 201, an upper splicing plate 202, and a lower splicing plate 203. Adjacent concrete slabs 201 are embedded into the lower splicing plate 203 through the upper splicing plate 202. The 3-section adaptable structure enables splicing. The pre-set EPDM rubber sealing strip on the splicing surface can fill the splicing gap, which can not only prevent rainwater from seeping into the base layer 10 and causing structural damage, but also buffer the thermal expansion and contraction stress of the concrete slab 201 caused by temperature changes, and avoid cracking at the splicing point. The auxiliary foundation 30 is made of reinforced concrete and is buried in the soil on both sides of the base layer 10 to a depth of not less than 1.5 times the thickness of the base layer 10 itself, so as to ensure that it forms an anchored fixed support in the soil. The top of the auxiliary foundation 30 has a slot 301 corresponding to the auxiliary rod 21 to provide a fixed support point for subsequent settlement compensation. The limiting strip block 22 at the bottom of the concrete slab 201 and the limiting strip groove 102 on the inner wall of the bottom of the base layer 10 are fitted one-to-one to form a rigid positioning along the direction of water flow in the drainage ditch (longitudinal) and perpendicular to the direction of water flow (lateral). This structure can resist the impact thrust of high-velocity water flow during rainstorms, the lateral squeezing force generated by soil freezing and thawing, and the vibration of vehicles under the drainage ditch below the road. It prevents the concrete slab 201 from sliding along the surface of the base layer 10, fundamentally preventing leakage caused by the expansion of the splice joint and damage to the edge of the concrete slab 201. The metal auxiliary rods 21 on both sides of the concrete slab 201 pass through the through hole 101 on the side wall of the base layer 10 and are precisely inserted into the slot 301 of the auxiliary foundation 30. The cooperation of the auxiliary rods 21 with the through hole 101 and the slot 301 further restricts the lateral displacement of the concrete slab 201, and at the same time transfers part of the load of the concrete slab 201 to the auxiliary foundation 30, realizing the dual lateral constraint of the base layer 10 and the auxiliary foundation 30, and improving the overall stability of the load-bearing body 20. When the base course 10 does not settle, the load-bearing structure 20 mainly relies on the base course 10 for direct support. The auxiliary rod 21 only serves as a lateral positioning tool and does not bear the main load, thus avoiding fatigue damage to the auxiliary structure due to long-term stress. When the base course 10 sinks due to soil compression, damage to the impermeable layer, etc., the concrete slab 201 tends to sink synchronously with the base course 10. At this time, the auxiliary foundation 30, due to its large burial depth and high material strength, can maintain a stable position. The slot 301 at its top applies an upward supporting force to the concrete slab 201 through the auxiliary rod 21, counteracting the sinking trend of the concrete slab 201. During this process, the auxiliary rod 21 acts as a force transmission rod, transferring part of the load of the concrete slab 201 to the auxiliary foundation 30, preventing the concrete slab 201 from sinking or breaking due to the loss of support from the base course 10, and preventing a chain of accidents such as roadbed collapse and pavement cracking caused by the settlement of the base course 10.
[0026] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A multi-segment spliced drainage ditch foundation structure, characterized in that, include: The base layer (10), the main bearing body (20), and the auxiliary foundation (30) are provided. Multiple main bearing bodies (20) are provided and are spliced together. The base layer (10) is laid under the main bearing body (20). There are two auxiliary foundations (30) located on both sides of the base layer (10). The bottom of the load-bearing body (20) is fixedly connected with several limiting strip blocks (22), and the bottom inner wall of the base layer (10) is provided with several limiting strip grooves (102). The limiting strip blocks (22) can be fitted into the limiting strip grooves (102) to prevent the load-bearing body (20) from being displaced on the base layer (10). Auxiliary rods (21) are provided on both sides of the main body (20), and slots (301) are provided on the top of the auxiliary foundation (30). The auxiliary rods (21) can be inserted into the slots (301) to provide upward support to the main body (20) when the base layer (10) settles.
2. The multi-segment spliced drainage ditch foundation structure according to claim 1, characterized in that, The supporting body (20) includes a concrete slab (201), an upper splicing plate (202) and a lower splicing plate (203). The concrete slab (201) is located above the base layer (10) and is closely attached to the base layer (10). The upper splicing plate (202) and the lower splicing plate (203) are located at both ends of the concrete slab (201), and the upper splicing plate (202) and the lower splicing plate (203) of adjacent concrete slabs (201) are adapted to each other and spliced together.
3. The multi-segment spliced drainage ditch foundation structure according to claim 2, characterized in that, The limiting strip blocks (22) are all fixedly connected to the bottom of the concrete slab (201), and the limiting strip blocks (22) correspond one-to-one with the limiting strip grooves (102).
4. The multi-segment spliced drainage ditch foundation structure according to claim 2, characterized in that, The auxiliary rod (21) is fixedly connected to the outer walls on both sides of the concrete slab (201). The inner walls on both sides of the base layer (10) are provided with through holes (101) corresponding to the auxiliary rod (21). The end of the auxiliary rod (21) away from the concrete slab (201) can pass through the through hole (101) and be inserted into the slot (301).
5. The multi-segment spliced drainage ditch foundation structure according to claim 1, characterized in that, The base layer (10) is concave, and from bottom to top, the base layer (10) consists of the original soil layer, the cushion layer, the impermeable layer and the reinforcement layer. The cushion layer is a leveling layer used to ensure the flatness of the top of the base layer (10). The impermeable layer is used to prevent water from seeping down and affecting the stability of the base layer (10). The reinforcement layer is used to improve the overall bearing capacity of the base layer (10).
6. The multi-segment spliced drainage ditch foundation structure according to claim 1, characterized in that, The auxiliary foundation (30) is made of reinforced concrete, and the depth of the auxiliary foundation (30) buried in the soil on both sides of the base layer (10) is not less than 1.5 times the thickness of the base layer (10) itself.
7. The multi-segment spliced drainage ditch foundation structure according to claim 1, characterized in that, The auxiliary rod (21) is made of metal and the outer surface of the auxiliary rod (21) is coated with an anti-corrosion coating. The anti-corrosion coating is made of epoxy resin to prevent the auxiliary rod (21) from rusting in soil or humid environments for a long time.
8. The multi-segment spliced drainage ditch foundation structure according to claim 2, characterized in that, Both the upper splicing plate (202) and the lower splicing plate (203) are provided with sealing strips, which are made of EPDM rubber.