CN115233533A - High-pile wharf steel trestle land-water connection structure and construction method - Google Patents

Abstract

The invention discloses an amphibious connection structure of a high-pile wharf steel trestle and a construction method, and relates to the technical field of hydraulic construction; high stake pier steel trestle land and water links up structure includes: roadbed, side slope, abutment and steel trestle; the roadbed is characterized in that the road surface edge of the roadbed is connected with the top of a side slope, the abutment is arranged on the side slope, one side of the abutment is connected with the steel trestle, the other side of the abutment is connected with the roadbed, and the top surface of the abutment is flush with the roadbed surface and the steel trestle surface; the steel trestle extends to a construction channel from the abutment side to the sea side, a plurality of groups of steel pipe piles are arranged at the bottom of the steel trestle along the length direction, and each group of steel pipe piles are uniformly arranged; the construction method of the connection structure has simple construction process, can reduce or even eliminate the height difference between the steel trestle and the roadbed, and reduce or even eliminate the height difference between the steel trestle and the construction channel, so that the steel trestle and the construction channel are smoothly transited, thereby enhancing the construction safety of the wharf superstructure construction channel and the wharf superstructure.

Description

High-pile wharf steel trestle land-water connection structure and construction method

Technical Field

The invention relates to the technical field of hydraulic construction, in particular to an amphibious connection structure of a high-pile wharf steel trestle and a construction method.

Background

The high-pile wharf is a wharf mainly composed of two parts, namely a pile foundation and an upper structure, and a plurality of construction platforms are generally required to be arranged as a connecting structure in the construction process of the high-pile wharf berth to connect the shore and a wharf operation site so as to facilitate the subsequent construction of the wharf.

In the existing connecting structure, a trestle is usually erected at the top of a pile foundation, so that the trestle is connected with an existing construction channel to facilitate the construction of an upper structure of a wharf; however, in the process of erecting the trestle, the problem that the designed elevation of the trestle is inconsistent with the elevation of the existing construction channel of a construction site exists, and the trestle and the existing construction channel have a height difference, so that the trestle and the existing construction channel cannot be well connected and transited, and the connection of the construction channel of the wharf superstructure has an unsmooth condition, so that the construction safety of the construction channel of the wharf superstructure is influenced.

Disclosure of Invention

At least one of the objectives of the present invention is to overcome the above problems in the prior art, and to provide an amphibious connection structure for a steel trestle of a high-pile wharf and a construction method thereof, which can reduce the height difference between the steel trestle and the existing construction channel, so as to smoothly transition the steel trestle and the existing construction channel, and ensure smooth transition between land and water, thereby enhancing the safety of the construction channel of the wharf superstructure and the construction of the wharf superstructure.

In order to achieve the above object, the present invention adopts the following aspects.

The utility model provides an amphibious of high pile pier steel trestle links up structure, includes: roadbed, side slope, abutment and steel trestle; the roadbed is characterized in that the road surface edge of the roadbed is connected with the top of a side slope, the abutment is arranged on the side slope, one side of the abutment is connected with the steel trestle, the other side of the abutment is connected with the roadbed, and the top surface of the abutment is flush with the roadbed surface and the bridge deck of the steel trestle; the steel trestle extends to a construction channel from the abutment side to the sea side, a plurality of groups of steel pipe piles are arranged at the bottom of the steel trestle along the length direction, and each group of steel pipe piles are uniformly arranged.

Preferably, the abutment is of an L-shaped structure, the shorter side of the abutment is embedded into the side slope, and the longer side of the abutment is positioned on the side slope.

Preferably, the abutment is located the dorsal part of a first set of steel-pipe pile, steel trestle and abutment hookup location department are provided with one set of or more groups of steel-pipe pile, along steel trestle width direction, every three or more steel-pipe pile are a set of, and the steel-pipe pile is evenly arranged.

Preferably, the slope protection is arranged on the surface of the side slope, the bottom of the slope protection is formed by paving a plurality of 800-1000kg of block stones, and the top of the slope protection is formed by paving a plurality of 100-200kg of block stones.

Preferably, the paving height of the 800-1000kg stone blocks is 1/3-1/2 of the height of the revetment.

Preferably, a gravel layer is laid on the surface of the slope top, and the thickness of the gravel layer is 20-30 cm.

Preferably, a concrete layer is arranged on the surface of the gravel layer and is connected with the roadbed pavement and the gravel layer, and the thickness of the concrete layer is 30-50 cm.

Preferably, the top surface of the abutment is flush with the surface of the concrete layer and the bridge deck of the steel trestle.

Preferably, the concrete layer gradient is 1%.

A construction method for an amphibious connection structure of a high-pile wharf steel trestle comprises the following steps:

the method comprises the following steps: excavating a road surface and a side slope on the basis of the original roadbed;

step two: on the excavated side slope, a plurality of groups of steel pipe piles are driven by a vibration hammer, and the steel pipe piles extend to the designed position from the side slope to the sea side;

step three: binding steel bars on the back side of the first group of steel pipe piles and pouring an L-shaped abutment;

step four: brushing a side slope, and backfilling 100-200kg and 800-1000kg of rock block slope protection on the side slope respectively;

step five: backfilling a filler in a space at the joint of the abutment and the roadbed, backfilling a 20-30 cm rubble layer on the surface of the backfilled filler and the top of the slope, and pouring a C30 concrete layer with the gradient of 1 percent on the surface of the rubble layer and the roadbed pavement;

step six: and erecting a steel trestle at the top of the steel pipe pile.

In summary, due to the adoption of the technical scheme, the invention at least has the following beneficial effects:

through set up the abutment on the side slope, abutment one side is connected with the road bed, the opposite side is connected with just landing stage, abutment top surface and roadbed surface, steel landing stage bridge floor parallel and level, can reduce or even eliminate the difference in height between steel landing stage and the road bed, reduce or even eliminate the difference in height between steel landing stage and the existing construction passageway, make between road bed and the steel landing stage, smooth-going transition between steel landing stage and the construction passageway, ensure that steel landing stage land-water conversion goes on smoothly, thereby ensure pier superstructure's efficiency of construction.

By arranging the abutment into an L-shaped structure, the shorter side of the abutment is embedded into the side slope, the longer side of the abutment is positioned on the side slope, and the top surface of the abutment is flush with the surface of the roadbed and the bridge deck of the steel trestle, so that the integral stability of the land and water connection structure can be ensured, and the side slope landslide can be prevented; the bearing capacity of the roadbed at the abutment can be enhanced, and the construction machinery can be ensured to stably move onto the steel trestle from the roadbed.

The gravel layer is arranged at the top of the side slope, so that smooth connection and transition between the top of the side slope and the surface of the roadbed can be ensured; by arranging the concrete layers with the gradient of 1% on the surface of the roadbed and the surface of the broken stone layer, the concrete layers can enhance the bearing capacity of the roadbed surface and can ensure smooth transition between the roadbed surface and the surface of the steel trestle; slope protection is arranged on the side slope, so that the stability of the side slope can be enhanced, and the side slope landslide can be prevented.

Drawings

Fig. 1 is a plan view of an amphibious connection structure of a high-piled wharf steel trestle according to an exemplary embodiment of the present invention.

Fig. 2 is a sectional view of fig. 1-1.

Fig. 3 is a cross-sectional view 2-2 of fig. 1.

Figure 4 is a top view of the abutment of figure 3.

Fig. 5 is a flow chart of the construction of the water-land connection structure of the high-pile wharf steel trestle according to the exemplary embodiment of the invention.

The labels in the figure are: 1-roadbed, 2-side slope, 21-slope top, 22-slope bottom, 23-concrete layer, 24-gravel layer, 25-revetment, 3-abutment, 4-steel trestle, 41-bailey beam, 42-longitudinal beam, 43-distribution beam and 5-steel pipe pile.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and embodiments, so that the objects, technical solutions and advantages of the present invention will be more clearly understood. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1 to fig. 3, the amphibious connection structure of a high pile wharf steel trestle according to an exemplary embodiment of the present invention mainly includes: a roadbed 1, a side slope 2, a bridge abutment 3 and a steel trestle 4; wherein, the road surface edge of the roadbed 1 is connected with the slope top 21 of the side slope, the abutment 3 is arranged at the position of the side slope 2, one side of the abutment 3 is connected with the steel trestle 4, the other side is connected with the roadbed 1, and the top surface of the abutment 3 is flush with the surface of the roadbed 1 and the bridge floor of the steel trestle 4; the steel trestle 4 extends to a construction channel from the abutment side to the sea side, a plurality of groups of steel pipe piles 5 are arranged at the bottom of the steel trestle 4 along the length direction, each group of steel pipe piles are uniformly arranged, the abutment 3 is positioned at the back side of the first group of steel pipe piles, and one or more groups of steel pipe piles are arranged at the connecting position of the steel trestle 4 and the abutment 3 so as to enhance the stability and the bearing capacity of the end part of the steel trestle 4; along steel trestle width direction, every three or more steel-pipe piles are a set of, and the steel-pipe pile is evenly arranged.

The filling area of the side slope 2 is of a trapezoidal structure, the length of the top of the slope 21 is smaller than that of the bottom of the slope 22, and the top of the slope 21 extends from one side of the roadbed to the connecting position of the abutment 3 and the steel trestle 4; referring to fig. 2, a slope protection 25 is arranged on the surface of a side slope 2, the slope protection 25 is formed by paving two different kinds of block stones with different weights, the block stone with a larger weight (800-1000 kg) is positioned at the bottom of the slope protection, the height of the block stone is 1/3-1/2 of the height of the slope protection, the block stone with a smaller weight (100-200 kg) is positioned at the top of the slope protection, the block stone with the larger weight is arranged at the bottom of the slope protection, so that the scouring of sea waves to the bottom of the slope protection can be effectively prevented, the block stone with the smaller weight is arranged at the top of the slope protection, the compactness of the slope protection structure can be increased, the slope protection block stone filling mode can effectively avoid the sea waves from expanding and falling damp and hollowing the slope protection, further ensure the virtual cavitation of the slope protection, furthest ensure the safety of the side slope structure, prevent landslide and enhance the structural stability of the slope protection; a gravel layer 24 is laid on the surface of the slope top 21, the thickness of the gravel layer 24 is 20-30 cm, and the gravel layer 24 is used for leveling the road surface of the roadbed 1 and the slope top 21, eliminating the height difference between the road surface and the slope top and enabling the road surface of the roadbed 1 and the slope top 21 to be in stable transition; the concrete layer 23 is arranged at the top of the gravel layer 24, the concrete layer 23 is connected with the road surface of the roadbed 1 and the gravel layer, the thickness of the concrete layer 23 is 30-50 cm, and the concrete layer 23 is used for enabling the road surface of the roadbed 1 and the gravel layer 24 to be in smooth transition so as to enhance the bearing capacity of the road surface and the side slope. Referring to fig. 3, the concrete layer 23 extends from the surface of the roadbed 1 to the side surface of the bridge abutment 3, and the gradient of the concrete layer 23 is 1% so as to enable the roadbed and the bridge abutment to be in smooth transition, ensure that construction vehicles such as a crawler crane and a material transport vehicle can stably move from the surface of the roadbed 1 to the surface of the steel trestle 4, and improve the safety of the vehicles in the moving process. The abutment 3 is an integrated cast-in-place steel-concrete structure, the shape of the integrated cast-in-place steel-concrete structure is L-shaped, the shorter side of the integrated cast-in-place steel-concrete structure is embedded into the side slope 2, the longer side of the integrated cast-in-place steel-concrete structure is positioned above the side slope 2, and the top surface of the integrated cast-in-place steel-concrete structure is flush with the surface of the concrete layer 23 and the bridge floor of the steel trestle 4 (a slash area between the longer side of the abutment and the side slope 2 represents a side slope circular arc sliding surface) so as to ensure the overall stability of the land-water connection structure; the shorter side of the abutment 3 is embedded into the soil body, so that the abutment can be connected with the steel trestle 4 and the roadbed 1, and the construction machinery can stably move from the roadbed to the steel trestle; the abutment can not only block filling, enhance the stability of the connection part of the roadbed and the abutment and prevent the landslide of the side slope of the roadbed; can also strengthen the stability of abutment self structure, strengthen the bearing capacity of abutment department road bed, adopt L shape abutment, when construction machinery removes 3 departments of abutment, under construction machinery's action of gravity, because 3 shorter one sides of abutment imbed in the soil body, the abutment opposite side can form the inboard static pressure of side slope, thereby guarantee that the abutment forms powerful the blockking to the side slope, support, avoid appearing the condition of abutment and side slope soil body separation, thereby ensure that construction machinery from the road bed even migration to the steel trestle on. The bridge deck elevation of the steel trestle 4 is 4-6 m, the main structure of the steel trestle is a Bailey beam 41, the bottom of the Bailey beam 41 is provided with a distribution beam 43, and the distribution beam 43 is used for stably mounting the steel trestle 4 on the top of a steel pipe pile; the top of the bailey beam 41 is provided with a stringer 42 to support the deck.

The invention provides a construction method of an amphibious connection structure of a high-pile wharf steel trestle, which comprises the following steps with reference to fig. 5:

the method comprises the following steps: excavating a road surface and a side slope on the basis of the original roadbed so that the gradient of the side slope meets the construction requirement;

step two: on the excavated side slope, a plurality of groups of steel pipe piles are driven by a vibration hammer, the steel pipe piles extend to the design position from the side slope to the sea side, and the number, driving depth and spacing between adjacent steel pipe piles are determined according to the design requirements;

step three: binding steel bars on the back side of the first group of steel pipe piles and pouring an L-shaped abutment;

step four: brushing a side slope, and backfilling 100-200kg and 800-1000kg of rock block slope protection on the side slope respectively; firstly, backfilling 800-1000kg of stones at the bottom of the side slope, and then backfilling 100-200kg of stones on the backfilled 800-1000kg of stones until the backfilling of the side slope is finished, wherein the backfilling thicknesses of the two stones are consistent;

step five: backfilling a filler in a space at the joint of the abutment and the roadbed to the height of the top of the side slope, backfilling a 20-30 cm rubble layer on the surface of the backfilled filler and the top of the side slope, and pouring a C30 concrete layer with the gradient of 1% on the surface of the rubble layer and the roadbed pavement, wherein the pouring thickness of the concrete layer is 30-50 cm;

step six: and (4) erecting a steel trestle at the top of the steel pipe pile, wherein the height of the bridge deck of the steel trestle is consistent with the height of the top of the abutment.

Preferably, the slope brushing range in the fourth step extends from one side of the original roadbed to the L-shaped bridge abutment and ends at the intersection part of the L-shaped bridge abutment and the steel trestle, and the width of the bottom of the slope brushing range is larger than that of the top of the slope, so that the slope brushing range is in a trapezoidal structure.

Because the L-shaped abutment has larger volume (the width W is 11-15 m, the L1 on the shorter side is 1.8-3 m, the L2 on the longer side is 2.8-4 m, and the width W is shown in figure 4), and the L-shaped abutment is embedded at the edge part of the roadbed by later-stage backfilling, the stability of the roadbed structure of the abutment part can be ensured, and the problems of complex construction process and high construction cost existing in the prior art that after the abutment is constructed, the side slope is constructed and reinforced outside the abutment are solved. By adopting the slope brushing range and the construction method adopting the process, the slope safety of the water-land connection structure of the high-pile wharf steel trestle can be ensured, the construction cost can be greatly reduced, and the economic benefit is improved.

The foregoing is merely a detailed description of specific embodiments of the invention and is not intended to limit the invention. Various alterations, modifications and improvements will occur to those skilled in the art without departing from the spirit and scope of the invention.

Claims (10)

1. The utility model provides an amphibious structure that links up of high stake pier steel trestle, its characterized in that includes: the device comprises a roadbed (1), a side slope (2), a bridge abutment (3) and a steel trestle (4); the road surface edge of the roadbed (1) is connected with a side slope top (21), the abutment (3) is arranged on a side slope (2), one side of the abutment (3) is connected with the steel trestle (4), the other side of the abutment is connected with the roadbed (1), and the top surface of the abutment (3) is flush with the surface of the roadbed (1) and the bridge floor of the steel trestle (4); the steel trestle (4) is extended to the construction channel from the abutment side to the sea side, a plurality of groups of steel pipe piles (5) are arranged at the bottom of the steel trestle along the length direction, and each group of steel pipe piles are uniformly arranged.

2. The amphibious connection structure of the high-pile wharf steel trestle according to claim 1, characterized in that the abutment (3) is of an L-shaped structure, and the shorter side of the abutment (3) is embedded into the side slope (2) and the longer side is positioned above the side slope (2).

3. The amphibious connection structure of the high-pile wharf steel trestle according to claim 1, wherein the abutment (3) is located on the back side of the first group of steel pipe piles, one or more groups of steel pipe piles are arranged at the connection position of the steel trestle (4) and the abutment (3), and every three or more groups of steel pipe piles are arranged in the width direction of the steel trestle, and the steel pipe piles are uniformly arranged.

4. The amphibious connection structure of the high-pile wharf steel trestle according to claim 1, wherein a revetment (25) is arranged on the surface of the side slope (2), the bottom of the revetment (25) is formed by paving a plurality of 800-1000kg of block stones, and the top of the revetment is formed by paving a plurality of 100-200kg of block stones.

5. The amphibious connection structure of the high-pile wharf steel trestle according to claim 4, wherein the laying height of the 800-1000kg of block stones is 1/3-1/2 of the height of the revetment.

6. The amphibious connection structure of the high-pile wharf steel trestle according to claim 1, wherein a gravel layer (24) is laid on the surface of the slope top (21), and the thickness of the gravel layer (24) is 20-30 cm.

7. The amphibious connection structure of the high-pile wharf steel trestle according to claim 6, wherein a concrete layer (23) is arranged on the surface of the gravel layer (24), the concrete layer is connected with the road surface of the roadbed (1) and the gravel layer (24), and the thickness of the concrete layer (23) is 30-50 cm.

8. The amphibious connection structure of a high pile wharf steel trestle according to claim 6, wherein the top surface of the abutment (3) is flush with the surface of the concrete layer (23) and the bridge deck of the steel trestle (4).

9. The elevated pile wharf steel trestle land-water connection structure according to claim 6, wherein the concrete layer (23) has a gradient of 1%.

10. A construction method for an amphibious connection structure of a high-pile wharf steel trestle is characterized by comprising the following steps:

the method comprises the following steps: excavating a road surface and a side slope on the basis of the original roadbed;

step two: on the excavated side slope, a plurality of groups of steel pipe piles are driven by a vibration hammer, and the steel pipe piles extend to the designed position from the side slope to the sea side;

step three: binding steel bars on the back side of the first group of steel pipe piles and pouring an L-shaped abutment;

step four: brushing a side slope, and backfilling 100-200kg and 800-1000kg of rock block slope protection on the side slope respectively;

step five: backfilling a filler in a space at the joint of the abutment and the roadbed, backfilling a 20-30 cm rubble layer on the surface of the backfilled filler and the top of the slope, and pouring a C30 concrete layer with the gradient of 1 percent on the surface of the rubble layer and the roadbed pavement;

step six: and erecting a steel trestle at the top of the steel pipe pile.

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