Precast pile supporting structure for deep silt soft soil river channel

Abstract

The utility model provides a deep silt soft soil river channel precast pile supporting structure. The deep silt soft soil river channel precast pile supporting structure comprises precast piles, a top beam and reinforcing soil. A plurality of precast piles are arranged along the river bank slope; the bottom of each precast pile is embedded and fixed into the bottom of a river channel, and the precast piles are mutually engaged and nested to form an integral row pile structure; integrally pouring a top beam on the pile top of the integral row pile structure; reinforcing soil is arranged on the passive area side of the river bottom built-in end of the whole row pile structure. According to the utility model, the precast piles and the crown beams are connected with each other, so that the bank slope supporting structure forms an integral stress structure, and the common stress is realized. A curing agent is adopted for local silt soft soil improvement of a river bottom precast pile passive area, the soil body strength of the area is enhanced, and the adverse effect of insufficient river soft soil strength of the precast pile passive area is weakened. Compared with a common cantilever pile support, the precast pile and reinforced soil structure support is better in deformation control and higher in bank slope stability, and compared with gravity type retaining wall support construction, the precast pile and reinforced soil structure support is smaller in excavation range, convenient to operate and smaller in environmental influence.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of riverway supporting structure, concretely relates to a deep thick silt soft soil riverway precast pile supporting structure. BACKGROUND

[0002] In recent years, in order to meet the requirement of ecological civilization construction and cope with the frequent extreme weather in city, riverway regulation and flood control engineering are carried out by local government. Due to the development of social economy and the acceleration of urbanization, land shortage problem is increasingly prominent, and riverway land is continuously compressed. In order to meet the requirement of flood discharge, most riverways are transformed into vertical bank slope, but the surrounding area of most riverways has high water content, complex geological and environmental conditions, and the vertical bank slope is difficult to be self-stable, so riverway bank slope supporting structure is needed for riverway bank slope protection.

[0003] The riverway bank slope supporting structure in prior art has problems of complex construction process, large excavation working face and easy deformation of riverway bank slope supporting structure. UTILITY MODEL CONTENT

[0004] In view of the defects in prior art, the utility model provides a deep thick silt soft soil riverway precast pile supporting structure, which can effectively solve the above problems.

[0005] The utility model adopts the technical scheme as follows:

[0006] The utility model provides a deep thick silt soft soil riverway precast pile supporting structure, which includes precast pile (1), crown beam (2) and reinforced soil (3).

[0007] A plurality of precast piles (1) are arranged along the riverway bank slope; the bottom of each precast pile (1) is embedded into the bottom of the riverway, and the precast piles (1) are mutually engaged and nested to form an integral row pile structure; the crown beam (2) is integrally poured on the top of the integral row pile structure; and the reinforced soil (3) is arranged on the passive area side of the embedded end of the integral row pile structure.

[0008] Preferably, each precast pile (1) has a matching clamping groove (4) on both sides, so that two adjacent precast piles (1) are mutually engaged and nested through the clamping groove (4).

[0009] Preferably, the crown beam (2) is a reinforced concrete crown beam.

[0010] Preferably, the top of the crown beam (2) is provided with a planting groove (5).

[0011] Preferably, the deep thick silt soft soil riverway precast pile supporting structure is a single-side independent supporting structure.

[0012] Preferably, the deep thick silt river channel precast pile supporting structure is used for single-side vertical bank slope and deep thick silt curve asymmetric river channel.

[0013] The deep thick silt river channel precast pile supporting structure has the following advantages:

[0014] The precast pile and the crown beam are connected with each other, so that the bank slope supporting structure forms a whole stress structure and realizes common stress. The solidifying agent is used for improving the local silt soil of the passive area of the river bottom precast pile, the strength of the soil body in the area is enhanced, and the adverse effect of the insufficient strength of the soft soil of the passive area of the precast pile is weakened. Compared with the gravity type retaining wall supporting construction, the excavation range is smaller, the operation is convenient, and the environmental influence is smaller. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 The deep thick silt river channel precast pile supporting structure is provided with a perspective view;

[0016] Fig. 2 The deep thick silt river channel precast pile supporting structure is provided with a side view;

[0017] Fig. 3 The deep thick silt river channel precast pile supporting structure is provided with a plan view of the whole row pile structure formed by the mutual engagement and nesting of the precast piles;

[0018] 1, precast pile; 2, crown beam; 3, reinforced soil; 4, clamping groove; 5, planting groove. DETAILED DESCRIPTION

[0019] In order to make the technical problems, technical schemes and beneficial effects solved by the utility model clearer and more apparent, the utility model is further described in detail below in combination with the drawings and embodiments.

[0020] The deep thick silt river channel precast pile supporting structure is provided with a perspective view;

[0021] The utility model discloses a vertical bank protection structure prefabricated pile + reinforced soil permanent river channel support scheme. Main train of thought is: the utility model is vertical bank slope prefabricated support structure, including prefabricated pile 1, corbel 2 and reinforced soil 3, prefabricated pile 1 constructs in river channel bank slope, and embeds into river channel bottom certain depth, forms vertical bank wall structure, protects bank slope stability;The prefabricated pile 1 top is poured in prefabricated pile 1, and the passive area of the embedded end of the prefabricated pile 1 is improved to the reinforced soil 3 by the solidifying agent. Among them: prefabricated pile 1 is connected by structure clamping groove each other, and is anchored and linked by corbel 2, makes support structure form integral structure system, jointly resists river channel bank slope soil pressure, and the strength of the reinforced soil formed by the soil improvement of the passive area position of the embedded end of the prefabricated pile 1 through the solidifying agent increases, provides higher passive area counterforce than river channel original soft silt, guarantees river channel bank slope stability, and can reduce pile body deformation to some extent.

[0022] Reference Figs. 1-3 The utility model provides a kind of deep thick soft silt river channel prefabricated pile support structure, including prefabricated pile 1, corbel 2 and reinforced soil 3;

[0023] Multiple prefabricated piles 1 are arranged along river channel bank slope;The bottom of each prefabricated pile 1 is embedded into river channel bottom, and each prefabricated pile 1 is mutually engaged and nested to form integral row pile structure;Specifically, each prefabricated pile 1 has mutually matched clamping groove 4 on both sides, so that two adjacent prefabricated piles 1 are mutually engaged and nested by clamping groove 4.

[0024] Corbel 2 is integrally poured on the top of integral row pile structure;Corbel 2 is reinforced concrete corbel. By setting corbel 2, the stiffness of the top of prefabricated pile 1 can be increased, and the deformation of the top of prefabricated pile can be effectively controlled.

[0025] A planting groove 5 is provided on the top of corbel 2. Therefore, landscape planting can be carried out on the top of corbel 3, reducing the exposure of hard structure and increasing the beauty of river channel.

[0026] Reinforced soil 3 is arranged on the side of passive area of embedded end at river bottom of integral row pile structure. Specifically, the soft silt in the passive area of embedded end at river bottom of prefabricated pile 1 can be improved and reinforced by solidifying agent to form reinforced soil 3 with higher strength. Therefore, the strength of soil in this area is increased, the adverse effects of insufficient strength of soft silt in passive area of prefabricated pile are weakened, the resistance of soil in passive area of prefabricated pile is improved, the stability of bank slope is improved, and the displacement of pile body is effectively controlled by high-strength reinforced soil.

[0027] The utility model provides a kind of deep thick soft silt river channel prefabricated pile support structure, which is a single-sided independent support structure and can be used for single-sided vertical bank slope. It is suitable for curved asymmetric river channel with deep thick soft silt, wide water surface and difficult to apply support cross brace. The combined support structure is also suitable for reinforcement and treatment of inclined ordinary cantilever pile support in soft silt river channel.

[0028] The utility model provides a kind of deep silt soft soil river channel precast pile supporting structure, and construction steps are as follows:

[0029] 1, level construction site before construction, first, the silt soft soil of passive zone of precast pile 1 river bottom is reinforced using solidifying agent, and forms reinforced soil 3;

[0030] 2, construction river channel precast pile 1, precast pile 1 is mutually engaged and nested by clamping groove 4, then precast pile is anchored and connected by cast-in-situ reinforced concrete crown beam 2 on the top of precast pile.

[0031] 3, after completion, plant green plants that adapt to the characteristics of engineering area in planting groove 5, improve river appearance quality.Pile top can be flush with riverbank top or set up slope to riverbank top according to river function requirement.

[0032] The utility model works as follows:

[0033] Construction river channel precast pile bears vertical bank slope soil pressure, protects bank slope soil body from sliding deformation; precast pile 1 two sides clamping groove 4 are mutually engaged and nested, connect independent precast pile 1 with each other, so that it forms integral force structure, improves river overall stability and the ability of resisting deformation;

[0034] The crown beam 2 of reinforced concrete material is poured on the top of precast pile 1, further strengthens the connection between each precast pile 1, and improves the rigidity of pile top position, can effectively improve the ability of pile top resisting deformation, so as to achieve the purpose of controlling pile top displacement;

[0035] The silt soft soil of passive zone of precast pile 1 is improved using solidifying agent to form reinforced soil 3, and the good mechanical properties of reinforced soil 3 can greatly improve the soil pressure of passive zone of precast pile, provide the soil reaction force of precast pile resisting deformation, ensure river bank slope stability, in addition, because the deformation modulus of reinforced soil 3 is greatly improved compared with silt soft soil, the displacement of precast pile 1 pile body can be effectively controlled, the influence of soil pressure behind pile on pile top displacement is further reduced, and the overall appearance effect of river can be effectively ensured.

[0036] As described above, the utility model uses precast pile to protect river bank slope, precast pile is embedded in river bottom along river bank, and serves as river bank slope retaining structure; the reserved clamping groove of each precast pile is mutually engaged and nested, so that it forms integral retaining structure, then reinforced concrete crown beam is poured on the top of precast pile, increases the overall rigidity of precast pile top, to achieve the purpose of controlling pile top displacement; the silt soft soil of passive zone side of precast pile embedded end is improved using solidifying agent, to form reinforced soil with higher strength, improve the strength of soil body in passive zone of precast pile, reduce the adverse effects of insufficient strength of silt soft soil in passive zone of precast pile, control precast pile body deformation, and protect river bank slope stability.

[0037] The utility model provides a kind of deep silt soft soil river channel precast pile supporting structure, with the advantages of quick construction, small disturbance range, can be applicable to unilateral vertical bank slope river channel, curve type asymmetric vertical bank slope and river channel width larger vertical bank slope etc.

[0038] The above is only the preferred embodiment of the utility model, and it should be pointed out that, for ordinary skilled person in the art, without departing from the principle of the utility model, a number of improvements and refinements can be made, and these improvements and refinements should be considered as the protection scope of the utility model.

Claims

1. A prefabricated pile support structure for a deep and soft soil river channel, characterized in that: It includes prefabricated piles (1), cap beams (2) and reinforced soil (3); A plurality of the precast piles (1) are arranged along the river bank slope; the bottom of each precast pile (1) is embedded in the river bottom, and each precast pile (1) is interlocked and nested with each other to form an integral pile row structure; the crown beam (2) is integrally cast on the pile top of the integral pile row structure; and the reinforced soil (3) is arranged on the passive area side of the river bottom embedded end of the integral pile row structure.

2. The precast pile support structure for a deep soft soil river channel according to claim 1 is characterized in that: Both sides of each prefabricated pile (1) are provided with mutually matching slots (4), so that two adjacent prefabricated piles (1) can be engaged and nested with each other through the slots (4).

3. The precast pile support structure for a deep soft soil river channel according to claim 1 is characterized in that: The crown beam (2) is a reinforced concrete crown beam.

4. The precast pile support structure for a deep soft soil river channel according to claim 1 is characterized in that: A planting groove (5) is provided on the top of the crown beam (2).

5. A precast pile support structure for a deep soft soil river channel according to any one of claims 1 to 4, characterized in that: The prefabricated pile support structure for the deep soft soil river channel is a unilateral independent support structure.

6. A precast pile support structure for a deep soft soil river channel according to any one of claims 1 to 4, characterized in that: The prefabricated pile support structure for a river channel with thick silt and soft soil is used for a single-sided vertical bank slope and a curved asymmetric river channel with thick silt and soft soil.

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