Sunken hydrophilic walkway under assembled bridge and hydrophilic walkway construction method

Abstract

The present invention discloses an assembled under-bridge sunken hydrophilic walkway and a construction method. The assembled under-bridge sunken hydrophilic walkway comprises a prefabricated square pile component, a prefabricated walkway cantilever plate and a prefabricated walkway rear slab, the bottom of the prefabricated square pile component is used to be inserted into the soil; the prefabricated walkway cantilever plate comprises a horizontal plate and a vertical plate, the top of the vertical plate is connected to the bottom surface of the horizontal plate, the bottom end of the vertical plate extends downward into the soil, the horizontal plate is provided with a first opening that runs through from top to bottom, and the prefabricated walkway cantilever plate is connected to the top of the prefabricated square pile component through the first opening; the prefabricated walkway rear slab is correspondingly provided with a second opening that runs through from top to bottom, the prefabricated walkway rear slab is arranged above the prefabricated walkway cantilever plate, and is connected to the top of the prefabricated square pile component through the second opening. The hydrophilic walkway realizes the functional integration of the revetment retaining wall and the hydrophilic walkway, and has obvious advantages over traditional structures in space-constrained areas such as under-bridge nodes.

Description

Technical Field

[0001] The present invention relates to the technical field of river engineering construction, and in particular to a sunken hydrophilic walkway under an assembled bridge and a construction method thereof. Background Art

[0002] In order to realize the connection of the slow-moving footpath system on the river, it is necessary to build a water-friendly footpath at the nodes under the bridge. The space under the bridge is often narrow and the clearance is insufficient, and the bridge piers pose a great obstacle to construction.

[0003] In the prior art, the hydrophilic walkway is laid behind the river bank protection. Due to the low elevation of the hydrophilic walkway, water accumulation is easy to form. Bank protection construction often requires cast-in-place concrete components below the water level, with a large construction interface and a long construction period. It is necessary to fill the cofferdam and occupy the river for a long time. The conventional double-row pile water hydrophilic walkway layout covers the water surface, which has a certain degree of encroachment on the water area, affecting the flood discharge and drainage of the river, and affecting the navigation and other functions of the river. A new retaining wall needs to be built behind the existing hydrophilic walkway, which has high space requirements. If the original river width needs to be maintained, the bridge span will inevitably be increased, which will increase investment. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the defects of conventional hydrophilic walkways in the prior art that are limited in application to surrounding site environments and rivers with poor foundations, and to provide a sunken hydrophilic walkway under an assembled bridge and a hydrophilic walkway construction method.

[0005] An assembled under-bridge sunken hydrophilic walkway comprising:

[0006] A prefabricated square pile component, the bottom of which is used to be inserted into the soil;

[0007] A prefabricated cantilever plate for a walkway, the prefabricated cantilever plate for a walkway comprising a horizontal plate and a vertical plate, the top end of the vertical plate being connected to the bottom surface of the horizontal plate, the bottom end of the vertical plate extending downward into the soil, the horizontal plate being provided with a first opening extending vertically therethrough, the prefabricated cantilever plate for a walkway being connected to the top of the prefabricated square pile member through the first opening;

[0008] A prefabricated walkway rear plate is provided with a second opening extending vertically therethrough. The prefabricated walkway rear plate is arranged above the prefabricated walkway cantilever plate and is connected to the top of the prefabricated square pile component through the second opening.

[0009] In this scheme, the vertical plates can play a retaining role on the one hand, and can balance the overturning moment generated by the horizontal plates on the other hand. The prefabricated square pile components are used to bear the upper vertical load and the horizontal earth pressure transmitted by the vertical plates. The structure of this assembled under-bridge sunken hydrophilic walkway is simple and occupies a small area. It realizes the functional integration of the bank retaining wall and the hydrophilic walkway, and has obvious advantages over traditional structures in space-constrained areas such as under-bridge nodes. While maintaining the stability of the soil behind the wall, it reduces the disturbance to the natural river bank slope, occupies a small amount of water surface in the river, and is suitable for narrow riverside spaces. This scheme does not set a retaining wall higher than the walkway on the outside of the walkway. When the water level recedes, no water will accumulate, overcoming the water accumulation problem of traditional sunken walkways. At the same time, it expands the space under the bridge and has a good hydrophilic effect. It is assembled from various components and has good adaptability and flexibility. It can be equipped with Retaining walls of different heights can be set to meet different retaining height requirements, and different trail surface heights can be set according to water level data; when reconstruction is needed in the future, the above components can be dismantled in an orderly manner, and no waste concrete will be left in the soil, reducing the impact on the ecology; the components are prefabricated using factory standards, which greatly reduces the types of components and realizes large-scale production; the cost is low and the versatility is good, avoiding the large-scale on-site cast-in-place concrete construction steps, shortening the on-site construction period, with good construction quality and less environmental impact; on-site installation does not require strict dry land construction conditions and can be constructed on water, avoiding the long-term occupation of the river channel by the filling cofferdam and affecting river navigation and flood discharge.

[0010] Preferably, the transverse board includes a first transverse board and a second transverse board connected to each other, the height of the second transverse board is higher than the first transverse board, the first opening is arranged on the first transverse board, and the prefabricated walkway rear board is arranged above the first transverse board.

[0011] In this solution, the above-mentioned structural form is adopted so that the prefabricated square pile components can bear the upper vertical load and the horizontal pressure transmitted by the vertical plate.

[0012] Preferably, the top surface of the second transverse board is flush with the top surface of the rear board of the prefabricated walkway.

[0013] In this solution, the prefabricated walkway rear slab balances the prefabricated walkway cantilever slab, and the prefabricated walkway rear slab and the prefabricated walkway cantilever slab together form the pavement of the hydrophilic walkway.

[0014] Preferably, two first openings are symmetrically arranged on the first transverse plate, two second openings are symmetrically arranged on the rear slab of the prefabricated walkway, and each of the prefabricated walkway cantilever plates is connected to two of the prefabricated square pile components.

[0015] In this scheme, the above-mentioned structural form is adopted to enhance the stability of the sunken hydrophilic walkway under the prefabricated bridge.

[0016] Preferably, the top end of the vertical plate is connected to an end of the first horizontal plate away from the second horizontal plate.

[0017] Preferably, the vertical plate is arranged to be close to the side surface of the prefabricated square pile member.

[0018] In this solution, the above-mentioned structural arrangement is adopted so that the vertical plate can transmit horizontal pressure to the prefabricated square pile components.

[0019] Preferably, the prefabricated square pile component has a pile foundation corbel, and the pile foundation corbel is arranged on the upper part of the prefabricated square pile component to support the prefabricated walkway cantilever plate.

[0020] In this solution, the prefabricated walkway cantilever plate can be erected on the pile foundation corbels.

[0021] Preferably, the gap between the first opening or the second opening and the prefabricated square pile component is filled with plain concrete.

[0022] In this solution, the above-mentioned structural form is adopted to make the connection between the prefabricated square pile components and the prefabricated walkway rear slab and the prefabricated walkway cantilever slab more stable.

[0023] Preferably, pavement and railings are provided above the prefabricated walkway cantilever plate and the prefabricated walkway rear plate.

[0024] A hydrophilic walkway construction method is used to install a sunken hydrophilic walkway under an assembled bridge. The construction method utilizes the above-mentioned sunken hydrophilic walkway under an assembled bridge. The construction method comprises the following steps:

[0025] S10, inserting the prefabricated square pile component into the soil;

[0026] S20, hoisting the prefabricated walkway cantilever plate to the top of the prefabricated square pile component;

[0027] S30, hoisting the rear slab of the prefabricated walkway to above the cantilever slab of the prefabricated walkway.

[0028] In this plan, this construction method has low cost and good versatility. It avoids large-scale on-site cast-in-place concrete construction steps, shortens the on-site construction period, has good construction quality, and has little environmental impact. On-site installation does not require strict dry land construction conditions and can be constructed on water, avoiding the long-term occupation of the river channel by the construction of cofferdams, which affects river navigation and flood discharge.

[0029] On the basis of being in accordance with the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present invention.

[0030] The positive and progressive effects of the present invention are:

[0031] The assembled under-bridge sunken hydrophilic walkway has a simple structure and occupies a small area. It realizes the functional integration of the bank retaining wall and the hydrophilic walkway, and has obvious advantages over traditional structures in space-constrained areas such as under-bridge nodes. While maintaining the stability of the soil behind the wall, it reduces the disturbance to the natural river bank slope and occupies a small amount of water surface in the river, making it suitable for narrow riverside spaces. There is no need to set a retaining wall higher than the walkway on the outside of the walkway, and when the water level recedes, no water will accumulate, thus overcoming the water accumulation problem of traditional sunken walkways and expanding the space under the bridge, which has a good hydrophilic effect. It is assembled from various components and has good adaptability and flexibility. It can be configured in different Retaining walls of the same height can adapt to different retaining height requirements, and different walkway surface heights can be set according to water level data; when reconstruction is needed in the future, the above components can be dismantled in an orderly manner, and no waste concrete will be left in the soil, reducing the impact on the ecology; the components are prefabricated using factory standards, which greatly reduces the types of components and realizes large-scale production; the cost is low and the versatility is good, avoiding the large-scale on-site cast-in-place concrete construction steps, shortening the on-site construction period, with good construction quality and less environmental impact; on-site installation does not require strict dry land construction conditions and can be constructed on water, avoiding the long-term occupation of the river channel by the filling cofferdam and affecting river navigation and flood discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a cross-sectional view of a sunken hydrophilic walkway under an assembled bridge according to a preferred embodiment of the present invention.

[0033] Figure 2 It is a schematic diagram of the three-dimensional structure of the prefabricated square pile components, the prefabricated walkway cantilever panels and the prefabricated walkway rear panels according to a preferred embodiment of the present invention.

[0034] Figure 3 Schematic diagram of the arrangement of prefabricated square pile components on the prefabricated walkway cantilever slab and the prefabricated walkway rear slab according to a preferred embodiment of the present invention.

[0035] Figure 4 The present invention is a flowchart of a hydrophilic walkway construction method according to a preferred embodiment of the present invention.

[0036] Description of Reference Numerals

[0037] Prefabricated square pile components 1

[0038] Prefabricated walkway cantilever slab 2

[0039] Prefabricated walkway rear slab 3

[0040] Plain concrete caulking 4

[0041] Railing 5

[0042] Paving 6

[0043] Emergent Plants 7

[0044] Turf 8

[0045] Pile foundation bracket 11

[0046] First horizontal board 21

[0047] Second horizontal board 22

[0048] Riser 23

[0049] The first opening 24

[0050] The second opening 31 DETAILED DESCRIPTION

[0051] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0052] This embodiment discloses a sunken hydrophilic walkway under an assembled bridge, such as Figure 1-3 As shown, it includes a prefabricated square pile component 1, a prefabricated walkway cantilever plate 2 and a prefabricated walkway rear plate 3, the bottom of the prefabricated square pile component 1 is used to be inserted into the soil; the prefabricated walkway cantilever plate includes a horizontal plate and a vertical plate 23, the top of the vertical plate 23 is connected to the bottom surface of the horizontal plate, and the bottom end of the vertical plate 23 extends downward into the soil, the horizontal plate is provided with a first opening 24 that passes through from top to bottom, and the prefabricated walkway cantilever plate 2 is connected to the top of the prefabricated square pile component 1 through the first opening 24; the prefabricated walkway rear plate 3 is correspondingly provided with a second opening 31 that passes through from top to bottom, the prefabricated walkway rear plate 3 is provided above the prefabricated walkway cantilever plate 2, and is connected to the top of the prefabricated square pile component 1 through the second opening 31.

[0053] In this embodiment, the structure of the assembled under-bridge sunken hydrophilic walkway is simple, with a small footprint, and the functional integration of the bank retaining wall and the hydrophilic walkway is realized, which has obvious advantages over the traditional structure in the space-constrained areas such as under-bridge nodes. While maintaining the stability of the soil behind the wall, the disturbance to the natural river bank slope is reduced, and the water surface occupied by the river is small, which is suitable for narrow riverside space; there is no need to set a retaining wall higher than the walkway on the outside of the walkway, and when the water level recedes, no water will accumulate, which overcomes the water accumulation problem of the traditional sunken walkway, and at the same time expands the space under the bridge, with a good hydrophilic effect; it is assembled by various components, with good adaptability and flexibility; retaining walls of different heights can be configured to meet different retaining height requirements, and different walkway surface heights can be set according to water level data; when it needs to be remodeled in the future, the above components can be dismantled in an orderly manner, and no waste concrete will be left in the soil, reducing the impact on the ecology; the components are prefabricated according to factory standards, which greatly reduces the types of components and realizes large-scale production.

[0054] like Figure 2As shown, the prefabricated walkway cantilever plate 2 includes a first horizontal plate 21 and a second horizontal plate 22 connected to each other, the height of the second horizontal plate 22 is higher than the first horizontal plate 21, the first opening 24 is arranged on the first horizontal plate 21, and the prefabricated walkway rear plate 3 is arranged above the first horizontal plate 21. The top end of the vertical plate 23 is connected to the end of the first horizontal plate 21 away from the second horizontal plate 22. Among them, the vertical plate 23 plays a retaining role on the one hand, and can balance the overturning moment generated by the first horizontal plate 21 and the second horizontal plate 22 on the other hand. The vertical plate 23 is arranged to be close to the side of the prefabricated square pile component 1, so that the vertical plate 23 can transmit horizontal pressure to the prefabricated square pile component 1.

[0055] The prefabricated square pile component 1 can bear the upper vertical load and the horizontal pressure transmitted by the vertical plate 23.

[0056] The top surface of the second horizontal plate is flush with the top surface of the prefabricated walkway rear plate 3. The prefabricated walkway rear plate 3 balances the prefabricated walkway cantilever plate 2, and the prefabricated walkway rear plate 3 and the prefabricated walkway cantilever plate 2 together form the pavement of the hydrophilic walkway.

[0057] like Figure 2 and Figure 3 As shown, two first openings 24 are symmetrically arranged on the first horizontal plate 21, two second openings 31 are symmetrically arranged on the rear slab 3 of the prefabricated walkway, and each prefabricated walkway cantilever plate 2 is connected to two prefabricated square pile components 1. The above structural form is adopted to enhance the stability of the sunken hydrophilic walkway under the assembled bridge.

[0058] The prefabricated square pile component 1 has a pile foundation bracket 11, which is arranged on the upper part of the prefabricated square pile component 1 to support the prefabricated walkway cantilever plate 2. The prefabricated walkway cantilever plate 2 can be erected on the pile foundation bracket 11.

[0059] The gap between the first opening or the second opening and the prefabricated square pile component 1 is filled with plain concrete. Figure 1 The plain concrete caulking 4 is shown in the figure. The above structural form is adopted to make the connection between the prefabricated square pile component 1 and the prefabricated walkway rear slab 3 and the prefabricated walkway cantilever slab 2 more stable. Pavement 6 and railing 5 are also arranged above the prefabricated walkway cantilever slab 2 and the prefabricated walkway rear slab 3.

[0060] Specifically, the size of the cross section of the prefabricated square pile component 1 is 300mm*300mm, and the length of the prefabricated square pile component 1 is designed according to the geological conditions. The pile foundation corbel is 400mm away from the pile top, 400mm high, and 100mm wide. The prefabricated walkway cantilever plate 2 has a longitudinal length of 3m and a thickness of 200mm. The thickness at the variable section (the connection between the first horizontal plate and the second horizontal plate) is not less than 200mm. The vertical plate is 1200mm long, the first horizontal plate is 740mm long, and the second horizontal plate (cantilever section) is 760mm long. The standard prefabricated walkway rear slab 3 has a longitudinal length of 3m and a thickness of 200mm. The size of the first opening and the second opening is 330*330mm, and the center distance of the first opening and the second opening is 750mm from the longitudinal edge. The reinforcement of all standard prefabricated components must meet the strength requirements.

[0061] Clay soil can be backfilled behind the baffle at the rear side of the trail, turf 8 can be planted on the upper slope to protect the slope, and emergent plants 7 can be planted on the beach in front of the trail to form a better ecological landscape effect.

[0062] like Figure 4 As shown, this embodiment also discloses a hydrophilic walkway construction method for installing a sunken hydrophilic walkway under an assembled bridge, characterized in that the construction method utilizes the above-mentioned sunken hydrophilic walkway under an assembled bridge, and the construction method comprises the following steps:

[0063] S10, inserting the prefabricated square pile component 1 into the soil;

[0064] S20, hoisting the prefabricated walkway cantilever plate 2 to the top of the prefabricated square pile component 1;

[0065] S30, hoisting the rear slab 3 of the prefabricated walkway to above the cantilever slab 2 of the prefabricated walkway.

[0066] In this embodiment, the construction method has low cost and good versatility, avoids large-scale on-site cast-in-place concrete construction steps, shortens the on-site construction period, has good construction quality, and has little environmental impact; on-site installation does not require strict dry land construction conditions and can be constructed on water, avoiding the long-term occupation of the river channel by the construction of cofferdams, which affects river navigation and flood discharge.

[0067] Specifically, the steps of the hydrophilic trail construction method are:

[0068] (1) Measurement and layout

[0069] According to the design requirements and plane position of the drawings, the layout position of the hydrophilic trail is determined on the river slope, and based on this, the scope and elevation of the slope excavation are determined and marking lines are made.

[0070] (2) Excavation of foundation trench

[0071] First, excavation was carried out on the river slope to create a construction interface. The excavation method adopted layered excavation, starting from 0.5m 3 The backhoe excavator is equipped with a 5-ton dump truck to transport the earth to the designated area. The foundation pit is leveled to ensure the excavation elevation is accurate. The structure construction does not require cast-in-place concrete, and a small amount of water can be allowed to enter the foundation pit, so there is no need to fill the cofferdam.

[0072] (3) Standard prefabricated pile foundation construction

[0073] According to the requirements of bearing capacity and overall stability of the slope, standard prefabricated square pile components of reasonable size are selected. Under the condition of deep silt foundation, the vibration pile sinking method is used to sink the piles, and the elevation and plane position of the pile foundation are strictly controlled. When sinking to the pile foundation bracket, it can be combined with manual local excavation to sink to the specified elevation. The pile foundation construction of the hydrophilic trail should be completed after the pile foundation construction of the bridge pedestal is completed.

[0074] (4) Construction of prefabricated walkway panels

[0075] The prefabricated walkway cantilever plate and the prefabricated walkway rear plate are transported to the construction site for hoisting and installation. With the assistance of the construction workers, the prefabricated walkway cantilever plate 2 is opened and passed through the pile head and is erected on the pile foundation corbel 11, with the tail close to the pile foundation. The prefabricated walkway rear plate 3 is horizontally inserted into the pile head and placed above the prefabricated walkway cantilever plate 2. Plain concrete is used to fill the gaps between the first opening 24, the second opening 31 and the prefabricated walkway cantilever plate 2 and the prefabricated walkway rear plate 3 to form an effective connection.

[0076] (5) Pavement 6 and railing 5 construction

[0077] The assembled hydrophilic walkway is paved 6 and railings 5 ​​are installed.

[0078] (6) Slope leveling and greening planting

[0079] The backfill of clay soil behind the wall meets the design requirements. The slopes before and after the retaining wall (i.e., vertical slab) are leveled and suitable greenery is planted.

[0080] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0081] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A sunken hydrophilic walkway under an assembled bridge, characterized in that: It includes: A prefabricated square pile component, the bottom of which is used to be inserted into the soil; A prefabricated cantilever plate for a walkway, the prefabricated cantilever plate for a walkway comprising a horizontal plate and a vertical plate, the top end of the vertical plate being connected to the bottom surface of the horizontal plate, the bottom end of the vertical plate extending downward into the soil, the horizontal plate being provided with a first opening extending vertically therethrough, the prefabricated cantilever plate for a walkway being connected to the top of the prefabricated square pile member through the first opening; A prefabricated walkway rear slab, wherein the prefabricated walkway rear slab is provided with a second opening extending vertically therethrough, the prefabricated walkway rear slab is arranged above the prefabricated walkway cantilever slab, and is connected to the top of the prefabricated square pile member through the second opening; The transverse plate comprises a first transverse plate and a second transverse plate connected to each other, the height of the second transverse plate is higher than the first transverse plate, the first opening is arranged on the first transverse plate, the rear plate of the prefabricated walkway is arranged above the first transverse plate; the top surface of the second transverse plate is flush with the top surface of the rear plate of the prefabricated walkway; Two first openings are symmetrically arranged on the first transverse plate, two second openings are symmetrically arranged on the rear slab of the prefabricated walkway, and each of the prefabricated walkway cantilever plates is connected to two prefabricated square pile components; The top end of the vertical plate is connected to an end of the first horizontal plate away from the second horizontal plate; the vertical plate is arranged to be close to the side surface of the prefabricated square pile component.

2. The sunken hydrophilic walkway under the assembled bridge as claimed in claim 1 is characterized in that: The prefabricated square pile component has a pile foundation corbel, and the pile foundation corbel is arranged on the upper part of the prefabricated square pile component to support the prefabricated walkway cantilever plate.

3. The sunken hydrophilic walkway under the assembled bridge as claimed in claim 1 is characterized in that: The gap between the first opening or the second opening and the prefabricated square pile component is filled with plain concrete.

4. The sunken hydrophilic walkway under the assembled bridge according to any one of claims 1 to 3, characterized in that: Pavements and railings are arranged above the prefabricated walkway cantilever plate and the prefabricated walkway rear slab.

5. A method for constructing a hydrophilic walkway, used for installing a sunken hydrophilic walkway under an assembled bridge, characterized in that: The construction method utilizes the assembled underbridge sunken hydrophilic walkway according to any one of claims 1 to 4, and the construction method comprises the following steps: S10, inserting the prefabricated square pile component into the soil; S20, hoisting the prefabricated walkway cantilever plate to the top of the prefabricated square pile component; S30, hoisting the rear slab of the prefabricated walkway to above the cantilever slab of the prefabricated walkway.

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