Large-diameter sewage interception main pipe protection structure for bridge abutment construction

Abstract

The invention discloses a large-diameter sewage interception main pipe protection structure for bridge abutment construction. The large-diameter sewage interception main pipe protection structure comprises a protection frame body device, a concrete encapsulation layer poured on the outer surface of a sewage interception main pipe and a machine-made sand backfilling layer arranged between the protection frame body device and the concrete encapsulation layer. The lower end of the protective frame body device extends downwards, and the installation depth is larger than the lowest installation position of the sewage interception main pipe. According to the large-diameter sewage interception main pipe protection structure used for bridge abutment construction, after the soil body on the outer side of the sewage interception main pipe is excavated, concrete encapsulation layer construction is conducted, shaping protection on the outer side of the sewage interception main pipe is formed, and through backfilling of a machine-made sand layer between the protection frame body device and the concrete encapsulation layer and subsequent pouring of the protection frame body device, the construction efficiency is improved. By means of the structure, a multi-layer protection structure for the pollutant intercepting main pipe is integrally formed, it is ensured that the bridge abutment and the pollutant intercepting main pipe can be constructed at the same time, operation and safety of the pollutant intercepting main pipe are not disturbed when the bridge abutment is constructed, the pollutant intercepting main pipe is prevented from being moved and changed, and the construction progress is accelerated.

Description

Technical Field

[0001] The present invention relates to the field of building construction, and in particular to a large-diameter sewage interception main pipe protective structure for bridge abutment construction. Background Art

[0002] Abutments are structures located at each end of a bridge, connecting to the embankment and supporting the span structure. They play a critical role in the transition between the bridge and the road, bearing the vertical and horizontal forces transmitted by the span structure while also resisting the earth pressure of the embankment, ensuring a stable connection between the bridge and the embankment.

[0003] A sewage interception main pipe is a sewage treatment engineering facility. By building a sewage main pipe parallel to and close to the river (or water body) bank line, all main pipes or branch pipes in the drainage area that directly discharge sewage into the water body are intercepted, and the sewage flows along the pipe to the sewage treatment plant for treatment, or is transported to another discharge area for simple treatment before being discharged into the water body.

[0004] During the construction of abutments, it is inevitable to encounter situations where it is necessary to cross the sewage interception main pipe. The intersection of various pipelines during abutment construction brings great difficulties to the construction and involves certain safety risks. Once the sewage interception main pipe leaks, it will seriously pollute the surrounding soil and cause pollution to the surrounding rivers. The conventional construction method is to relocate the sewage interception main pipe to avoid the impact of subsequent construction on the sewage interception main pipe. However, the conventional relocation method has slow construction efficiency and high cost, and there is also a situation where the pipeline path remains unchanged. Therefore, it is necessary to improve the existing structure.

[0005] Therefore, in order to solve the above problems, a large-diameter sewage interception main pipe protective structure for bridge abutment construction is needed to solve the above production problems.

[0006] Therefore, in order to solve the above problems, a large-diameter sewage interception main pipe protective structure for abutment construction is needed to solve the above production problems. Summary of the Invention

[0007] In view of this, the large-diameter sewage interception main pipe protection structure used for abutment construction in this technical solution is constructed by excavating the soil outside the sewage interception main pipe and then constructing a concrete encapsulation layer to form a fixed protection for the outside of the sewage interception main pipe. By backfilling the machine-made sand layer between the protection frame device and the concrete encapsulation layer and subsequently pouring the protection frame device, a multi-level protection structure for the sewage interception main pipe is formed as a whole, ensuring that the abutment and the sewage interception main pipe can be constructed at the same time. During the construction of the abutment, the operation and safety of the sewage interception main pipe are not disturbed, the relocation of the sewage interception main pipe is avoided, and the construction progress is accelerated.

[0008] A large-diameter sewage interception main pipe protection structure for abutment construction includes a protection frame device, a concrete encapsulation layer cast on the outer surface of the sewage interception main pipe, and a machine-made sand backfill layer arranged between the protection frame device and the concrete encapsulation layer; the lower end of the protection frame device extends downward and the installation depth is greater than the lowest installation position of the sewage interception main pipe.

[0009] Furthermore, the protective frame device includes a frame beam assembly and a support beam assembly installed in conjunction with the frame beam assembly, and the support beam assembly cooperates with the frame beam assembly to form a plurality of triangular support structures.

[0010] Furthermore, the support beam assembly includes a right longitudinal beam, a transverse beam and a left longitudinal beam installed in conjunction with the transverse beam. The right longitudinal beam is connected to the right end of the transverse beam, and a support rib beam is provided between the right longitudinal beam and the transverse beam.

[0011] Furthermore, the support beam assembly includes a connecting section installed in the middle of the transverse beam, a left support beam that cooperates with the connecting section and whose end is connected to the left longitudinal beam, and a right support beam. One end of the right support beam is installed in cooperation with the connecting section, and the other end is connected to the right longitudinal beam.

[0012] Furthermore, the transverse beam, left longitudinal beam, connecting section and left support beam form a left triangular support structure, and the transverse beam, right longitudinal beam, connecting section and right support beam form a right triangular support structure, and the sewage interception main pipe is arranged at the lower ends of the left support beam and the right support beam.

[0013] Furthermore, it also includes a steel pipe pile mechanism, which is perpendicular to the axial direction of the sewage interception main pipe and the installation depth of the steel pipe pile mechanism is greater than the installation depth of the protective frame device.

[0014] Furthermore, the left end portion of the protective frame device is fitted on the steel pipe pile mechanism.

[0015] Furthermore, a transverse base beam is provided at the lower end of the right longitudinal beam, and the right longitudinal beam and the transverse base beam are integrated into an L-shaped structure.

[0016] The beneficial effects of the present invention are:

[0017] The large-diameter sewage interception main pipe protection structure of the present technical solution for abutment construction forms a shaped protection for the outside of the sewage interception main pipe by excavating the soil outside the sewage interception main pipe and then constructing a concrete encapsulation layer. By backfilling a machine-made sand layer between the protection frame device and the concrete encapsulation layer and subsequently pouring the protection frame device, a multi-level protection structure for the sewage interception main pipe is formed as a whole, ensuring that the abutment and the sewage interception main pipe can be constructed at the same time. During the abutment construction, there is no disturbance to the operation and safety of the sewage interception main pipe, avoiding the relocation of the sewage interception main pipe and accelerating the construction progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0019] Figure 1 It is an overall schematic diagram of the present invention;

[0020] Figure 2 It is a cross-sectional schematic diagram of the protective frame device of the present invention. DETAILED DESCRIPTION

[0021] Figure 1 It is an overall schematic diagram of the present invention; Figure 2 It is a cross-sectional schematic diagram of the protective frame device of the present invention; as shown in the figure, a large-diameter sewage interception main pipe protective structure for abutment construction includes a protective frame device, a concrete encapsulation layer 4 cast on the outer surface of the sewage interception main pipe 5, and a machine-made sand backfill layer 7 arranged between the protective frame device and the concrete encapsulation layer; the lower end of the protective frame device extends downward and the installation depth is greater than the lowest installation position of the sewage interception main pipe; the large-diameter sewage interception main pipe protective structure for abutment construction of the present technical solution, through excavating the soil outside the sewage interception main pipe and then constructing the concrete encapsulation layer, forms a fixed protection for the outer side of the sewage interception main pipe, through backfilling the machine-made sand layer between the protective frame device and the concrete encapsulation layer and subsequently casting the protective frame device, a multi-level protection structure for the sewage interception main pipe is formed as a whole, ensuring that the abutment and the sewage interception main pipe can be constructed at the same time, and there is no disturbance to the operation and safety of the sewage interception main pipe during the abutment construction, avoiding the relocation of the sewage interception main pipe and speeding up the construction progress.

[0022] In this embodiment, the protective frame device includes a frame beam assembly and a support beam assembly installed in conjunction with the frame beam assembly. The support beam assembly cooperates with the frame beam assembly to form multiple triangular support structures. The protective frame device as a whole is a door frame structure. The frame beam assembly serves as the overall external load-bearing support. After the support beam assembly in the temporal part is installed in conjunction with the frame beam assembly, an internal triangular support structure is formed, which strengthens the internal structure while also facilitating the distribution of the bearing load to the frame structure and transmitting it downward.

[0023] In this embodiment, the support beam assembly includes a right longitudinal beam 8, a transverse beam 10 and a left longitudinal beam 11 installed in conjunction with the transverse beam. The right longitudinal beam is connected to the right end of the transverse beam. A support rib beam 9 is provided between the right longitudinal beam and the transverse beam. After the right longitudinal beam 8 is installed in conjunction with the transverse beam 10, a support rib beam 9 structure is also provided between the two, which improves the right side support strength of the frame structure and ensures that the force stability performance of the right part is guaranteed.

[0024] In this embodiment, the support beam assembly includes a connecting section mounted in the middle of the transverse beam, a left support beam 12 and a right support beam 13, which cooperate with the connecting section and are connected to the left longitudinal beam 11 at their ends. One end of the right support beam 13 cooperates with the connecting section and the other end is connected to the right longitudinal beam 8. A connecting section with a reinforced structure is also provided downward from the middle of the transverse beam 10, serving as a connection node for the left and right support beams 12, 13. The arrangement of the left and right support beams 12, 13 effectively improves the internal stability of the frame structure.

[0025] In this embodiment, the transverse beam 10, the left longitudinal beam 11, the connecting section, and the left support beam 12 form a left triangular support structure, while the transverse beam 10, the right longitudinal beam 8, the connecting section, and the right support beam 13 form a right triangular support structure. The sewage interception main pipe 5 is arranged at the lower ends of the left and right support beams. The left and right support beams 12 and 13 are installed in conjunction with the corresponding beam bodies to form two triangular support structures within the frame structure, further enhancing the stability of the overall structure. The sewage interception main pipe 5 is arranged at the lower ends of the left and right support beams 12 and 13. When the top of the sewage interception main pipe 5 is subjected to force, the load and impact energy of the overall structure are transmitted downward through the left and right longitudinal beams 11 and 8, reducing the vertical impact on the sewage interception main pipe. At the same time, the two triangular support structures ensure that the sewage interception main pipe is not affected by horizontal impacts, thus comprehensively ensuring the safety of the sewage interception main pipe during abutment construction.

[0026] This embodiment also includes a steel pipe pile mechanism 2, which is perpendicular to the axial direction of the sewage interception main pipe and has an installation depth greater than the installation depth of the protective frame. The vertical installation depth of the steel pipe pile mechanism 2 is greater than the installation depth of the left longitudinal beam 11. This not only supports and positions the protective frame, but also ensures that the abutment and sewage interception main pipe do not interfere with each other during construction, thereby improving construction efficiency.

[0027] In this embodiment, the left end of the protection frame device is installed in contact with the steel pipe pile mechanism 2. The left longitudinal beam 11 is fixedly installed in contact with the steel pipe pile mechanism 2 to ensure the overall installation stability.

[0028] In this embodiment, a transverse base beam is provided at the lower end of the right longitudinal beam, and the right longitudinal beam and the transverse base beam are integrated into an L-shaped structure. The transverse base beam structure is also provided at the lower portion of the right longitudinal beam 8, which improves its installation stability while optimizing load distribution and improving overall performance.

[0029] A construction method for a large-diameter sewage interception main pipe protective structure for abutment construction comprises the following steps:

[0030] S1: Determine the construction location of the sewage interception main pipe 5 and abutment A, and confirm the excavation depth of the sewage interception main pipe. Before construction, confirm the construction location of abutment A and the excavation depth of the sewage interception main pipe to facilitate subsequent construction.

[0031] S2: Confirm the construction spacing on the left side of the sewage interception main pipe and dig holes. After the digging depth reaches the specified construction depth, hoist the steel pipe pile mechanism into the corresponding hole for installation. First dig the hole, then hoist and install the steel pipe pile mechanism. The hoisted steel pipe pile mechanism serves to separate the left and right sides and serves as the foundation for construction on both sides.

[0032] S3: Excavating the outer layer of soil of the sewage interception main pipe 5. When the excavation depth is within 1-1.2 meters of the sewage interception main pipe, manual excavation is used to ensure that the sewage interception main pipe is not damaged during the excavation process. The sewage interception main pipe 5 is first excavated mechanically. After the appropriate soil depth is excavated, manual excavation is combined with mechanical excavation to transfer the soil. The excavation process ensures that the sewage interception main pipe is not damaged.

[0033] S4: Manually excavate until the upper half of the intercepting main is exposed to the soil. Continue excavating along the left and right sides of the intercepting main until more than 50% of the surface area of the intercepting main is exposed. After the upper half of the intercepting main is completely exposed, continue excavating downward along the sides of the intercepting main until about 60% of the intercepting main is exposed to the soil.

[0034] S5: Concrete the outer surface of the sewage interception main pipe exposed to the soil. After checking to ensure that the outer surface of the sewage interception main pipe is intact, concrete pouring is carried out using C30 concrete (starting from the surface of soil layer 3 of the sewage interception main pipe and pouring upwards). The concrete layer construction thickness is 20 cm.

[0035] S6: After the concrete in step S5 solidifies, the protective frame device is installed, the left longitudinal beam of the protective frame device is fixedly installed with the steel pipe pile mechanism, and the outer side of the concrete is backfilled with machine-made sand; after the concrete encapsulation layer 4 solidifies to a suitable construction time, the protective frame device is installed, the left longitudinal beam 11 of the protective frame device is fixedly installed with the steel pipe pile mechanism 2, and the machine-made sand backfill of the sewage interception main pipe is performed;

[0036] S7: After the machine-made sand in step S5 is backfilled and compacted, concrete is poured on the protective frame device (forming the outermost concrete protective layer 6, and the left longitudinal beam 11 is poured accordingly to form a wall structure 1 that fits the steel pipe pile mechanism 2), and the construction is completed.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A large-diameter sewage interception main pipe protective structure for abutment construction, characterized by: It includes a protective frame device, a steel pipe pile mechanism, a concrete encapsulation layer cast on the outer surface of the sewage interception main pipe, and a machine-made sand backfill layer arranged between the protective frame device and the concrete encapsulation layer; the lower end of the protective frame device extends downward and the installation depth is greater than the lowest installation position of the sewage interception main pipe, the steel pipe pile mechanism is perpendicular to the axial direction of the sewage interception main pipe, and the installation depth of the steel pipe pile mechanism is greater than the installation depth of the protective frame device.

2. The large-diameter sewage interception main pipe protection structure for abutment construction according to claim 1 is characterized by: The protective frame device includes a frame beam assembly and a support beam assembly installed in conjunction with the frame beam assembly. The support beam assembly cooperates with the frame beam assembly to form a plurality of triangular support structures.

3. The large-diameter sewage interception main pipe protection structure for abutment construction according to claim 2 is characterized by: The support beam assembly includes a right longitudinal beam, a transverse beam and a left longitudinal beam installed in conjunction with the transverse beam. The right longitudinal beam is connected to the right end of the transverse beam, and a supporting rib beam is provided between the right longitudinal beam and the transverse beam.

4. The large-diameter sewage interception main pipe protection structure for abutment construction according to claim 3 is characterized by: The support beam assembly includes a connecting section installed in the middle of the transverse beam, a left support beam that cooperates with the connecting section and whose end is connected to the left longitudinal beam, and a right support beam. One end of the right support beam is installed in conjunction with the connecting section, and the other end is connected to the right longitudinal beam.

5. The large-diameter sewage interception main pipe protection structure for abutment construction according to claim 4 is characterized in that: The transverse beam, left longitudinal beam, connecting section and left support beam form a left triangular support structure, and the transverse beam, right longitudinal beam, connecting section and right support beam form a right triangular support structure. The sewage interception main pipe is arranged at the lower ends of the left support beam and the right support beam.

6. The large-diameter sewage interception main pipe protection structure for abutment construction according to claim 1 is characterized by: The left end portion of the protective frame device is fitted on the steel pipe pile mechanism for installation.

7. The large-diameter sewage interception main pipe protection structure for abutment construction according to claim 3 is characterized by: A transverse base beam is provided at the lower end of the right longitudinal beam, and the right longitudinal beam and the transverse base beam are integrated into an L-shaped structure.

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