A land foundation pit for a highway-railway combined sea-crossing bridge

Abstract

The utility model relates to the technical field of foundation pit discloses a land foundation pit for highway-railway dual-purpose sea-crossing bridge, including foundation pit body, the inside fixedly connected with installation base of foundation pit body, the inside of installation base has set up the installation groove, the inside fixedly connected with auxiliary rod of foundation pit body, the inside sliding connection has sliding plate of auxiliary rod, the inside fixedly connected with first pipeline of foundation pit body, the inside of first pipeline is provided with second pipeline, the outside of second pipeline is provided with locking assembly, the outside of locking assembly sets up one end at first pipeline, locking assembly includes support shell, sliding block, sliding ring, support frame, support frame and first spring. In the utility model, first, the second pipeline is inserted into the first pipeline, and finally the purpose of external connection of the second pipeline is realized, the external connection pipeline can discharge the accumulated water, rainwater and construction wastewater in the foundation pit, keep the foundation pit dry, and avoid affecting the construction quality due to the accumulated water.

Description

Technical Field

[0001] This utility model relates to the field of foundation pit technology, and in particular to a land foundation pit for a cross-sea bridge for both road and rail use. Background Technology

[0002] The land-based foundation pit for a combined road-rail bridge is a temporary pit excavated in the land area to support the foundation of the combined road-rail bridge. It must simultaneously meet the complex load transfer requirements of both the road and the railway. Since it is mostly located in cities and suburbs, excavation deformation must be strictly controlled to protect surrounding roads, pipelines, buildings and other facilities. Its design must combine geological and load characteristics to select the support structure and match it with a water-stopping and dewatering system. Construction should follow the principles of layered excavation and support before excavation, and strengthen monitoring and emergency response.

[0003] The existing land-based foundation pits of dual-purpose road-rail cross-sea bridges use support systems to resist soil and water pressure to maintain the stability of the pit walls. Due to the difficulty in connecting external pipelines, drainage pipes are usually needed to remove accumulated water during the construction of the foundation pit. If the pipes cannot be connected, the water in the foundation pit cannot be drained in time. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a land-based foundation pit for a dual-purpose road-rail cross-sea bridge, aiming to improve the problem that existing land-based foundation pits for dual-purpose road-rail cross-sea bridges cannot be drained in a timely manner due to the difficulty in connecting external pipelines.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A land-based foundation pit for a combined road-rail cross-sea bridge includes a foundation pit body, an installation base fixedly connected inside the foundation pit body, an installation groove inside the installation base, an auxiliary rod fixedly connected inside the foundation pit body, a sliding plate slidably connected inside the auxiliary rod, a first pipe fixedly connected inside the foundation pit body, a second pipe disposed inside the first pipe, a locking component disposed outside the second pipe, and the locking component being disposed at one end of the first pipe.

[0007] The above technical solution involves an installation groove inside the mounting base, which adopts a dovetail groove structure and has an array of threaded holes on the groove wall to accommodate various specifications of bridge frames. The inner wall of the auxiliary rod is smoothed, and when it is necessary to block leakage points, the sliding plate can slide along the axis of the auxiliary rod to prevent a large amount of liquid from being stored inside the foundation pit.

[0008] Preferably, the locking assembly includes a supporting shell, a sliding block, a sliding ring, a support frame, and a first spring. One end of the supporting shell is fixedly connected to the outside of the second pipe. The sliding block is slidably connected inside the supporting shell. The sliding ring is slidably connected to the outside of the sliding block. The support frame is fixedly connected to the outside of the sliding ring. The first spring is provided at the bottom end of the support frame.

[0009] Preferably, the locking assembly further includes a first connecting pipe, a second connecting pipe, a rotating frame, a connecting rod, a rotating knob, and a second spring. One end of the second connecting pipe is fixedly connected to one end of the second pipe, and the other end of the second connecting pipe is provided with the first connecting pipe. The rotating frame is fixedly connected to the outside of the second connecting pipe, and the inside of the rotating frame is slidably connected to the outside of the first connecting pipe. The inside of the rotating frame is provided with a connecting rod, one end of which is fixedly connected with a rotating knob, and one end of the rotating knob is provided with a second spring.

[0010] Preferably, the sliding ring is slidably connected to the outside of the support frame inside the support housing, the bottom end of the first spring is disposed inside the first pipe, and one end of the sliding block is disposed outside the second pipe.

[0011] Preferably, one end of the first connecting pipe is fixedly connected to one end of the first pipe, the interior of the first connecting pipe is located outside the connecting rod, the interior of the rotating frame is located at one end of the second spring, and the interior of the rotating frame is located outside the rotating knob.

[0012] Preferably, a pulling component is provided on the outside of the sliding plate, and the outside of the pulling component is located inside the foundation pit body.

[0013] Preferably, the pulling assembly includes a rotating rod, which is rotatably connected to the outside of the sliding plate. A U-shaped frame is fixedly connected to the top of the rotating rod, and a pulling handle is rotatably connected to the inside of the U-shaped frame.

[0014] Preferably, the pull handle is externally rotatably connected to the outside of the pit body, and the sliding plate is externally slidably connected to the inside of the pit body.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, the second pipe is first inserted into the first pipe, and the sliding block is driven to slide by the push of the second pipe, which in turn causes the sliding ring to slide upward and the support frame to slide upward, thereby stretching the first spring and locking the second pipe inside the first pipe. The second pipe can also be rotated to drive the second connecting pipe and the rotating frame to rotate, so that the rotating frame is in contact with the outside of the first connecting pipe. Then, by rotating the rotating knob, the connecting rod is driven to rotate, thereby locking the connection between the rotating frame and the first connecting pipe. Finally, the purpose of connecting the second pipe is achieved. The pipe can be connected externally to drain the accumulated water, rainwater and construction wastewater in the foundation pit, keep the foundation pit dry and avoid the impact of water accumulation on the construction quality.

[0017] 2. In this utility model, the foundation pit body supports the pull handle, and then push the pull handle to drive the U-shaped frame to rotate. Then the rotating rod rotates with the rotation of the U-shaped frame, and the sliding plate slides with the rotation of the rotating rod. Finally, the purpose of blocking the leakage point is achieved. After the leakage point is blocked, the quality defects such as honeycomb and pitting caused by water accumulation can be avoided, ensuring the durability and load-bearing capacity of the foundation structure. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a land-based foundation pit for a dual-purpose road-rail cross-sea bridge proposed in this utility model.

[0019] Figure 2 This is a partial structural diagram of an installation base for a land-based foundation pit of a dual-purpose road-rail cross-sea bridge proposed in this utility model.

[0020] Figure 3 This is a partial structural diagram of a supporting shell for a land-based foundation pit of a dual-purpose road-rail cross-sea bridge proposed in this utility model.

[0021] Figure 4 This is a partial structural diagram of the first spring for the land-based foundation pit of a dual-purpose road-rail cross-sea bridge proposed in this utility model.

[0022] Figure 5 This is a partial structural diagram of the first pipeline for a land-based foundation pit of a dual-purpose road-rail cross-sea bridge proposed in this utility model.

[0023] Figure 6 This is a partial structural diagram of a rotating frame for a land-based foundation pit of a dual-purpose road-rail cross-sea bridge, as proposed in this utility model.

[0024] Figure 7 This is a partial structural diagram of a pull handle for a land-based foundation pit of a dual-purpose road-rail cross-sea bridge, as proposed in this utility model.

[0025] Legend:

[0026] 1. Foundation pit body; 2. Mounting base; 3. Mounting groove; 4. Auxiliary rod; 5. Sliding plate; 6. First pipe; 7. Second pipe; 8. Locking assembly; 801. Support shell; 802. Sliding block; 803. Sliding ring; 804. Support frame; 805. First spring; 806. First connecting pipe; 807. Second connecting pipe; 808. Rotating frame; 809. Connecting rod; 8010. Rotating knob; 8011. Second spring; 9. Pulling assembly; 901. Rotating rod; 902. U-shaped frame; 903. Pull handle. Detailed Implementation

[0027] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] Example 1:

[0029] Reference Figures 1-3 A land-based foundation pit for a combined road-rail cross-sea bridge includes a foundation pit body 1, an installation base 2 fixedly connected inside the foundation pit body 1, an installation groove 3 opened inside the installation base 2, an auxiliary rod 4 fixedly connected inside the foundation pit body 1, a sliding plate 5 slidably connected inside the auxiliary rod 4, a first pipe 6 fixedly connected inside the foundation pit body 1, a second pipe 7 arranged inside the first pipe 6, a locking component 8 arranged outside the second pipe 7, and the locking component 8 is arranged at one end of the first pipe 6.

[0030] Specifically, the foundation pit body 1 is used to support and fix the mounting base 2, and the mounting base 2 has an installation groove 3 inside to assist in the installation of the bridge. Then, the foundation pit body 1 is used to support and fix the auxiliary rod 4 and the first pipe 6, and the auxiliary rod 4 is used to assist the sliding plate 5 to slide up and down. Then, the first pipe 6 is used to support the installation of the locking component 8.

[0031] Reference Figure 1 , Figure 3 and Figure 4 The locking assembly 8 includes a support housing 801, a sliding block 802, a sliding ring 803, a support frame 804, and a first spring 805. One end of the support housing 801 is fixedly connected to the outside of the second pipe 7. The sliding block 802 is slidably connected inside the support housing 801. The sliding ring 803 is slidably connected to the outside of the sliding block 802. The support frame 804 is fixedly connected to the outside of the sliding ring 803. The first spring 805 is provided at the bottom end of the support frame 804.

[0032] Specifically, in this embodiment, the second pipe 7 is inserted into the first pipe 6. Simultaneously, the second pipe 7 drives the sliding block 802 to slide, and the sliding block 802 drives the sliding ring 803 to slide upwards. The sliding ring 803 then simultaneously drives the support frame 804 to slide upwards, and the support frame 804 drives the first spring 805 to stretch. The supporting shell 801 then supports the sliding block 802 and the sliding ring 803, and the first pipe 6 supports the stretching of the first spring 805. When installation is complete, the first spring 805, through its own characteristics, drives the support frame 804 and the sliding ring 803 to have a continuous upward pulling force, preventing the sliding block 802 from sliding outwards. When the second pipe 7 needs to be disassembled, the support frame 804 is pressed down, compressing the first spring 805 and simultaneously causing the sliding ring 803 to slide downwards, causing the sliding block 802 to slide outwards and loosening the connection between the second pipe 7 and the first pipe 6. This achieves the effect of connecting the second pipe 7 externally, keeping the foundation pit dry and preventing water accumulation from affecting construction quality.

[0033] Example 2:

[0034] Reference Figure 2 , Figure 5 and Figure 6 The locking assembly 8 also includes a first connecting pipe 806, a second connecting pipe 807, a rotating frame 808, a connecting rod 809, a rotating knob 8010, and a second spring 8011. One end of the second connecting pipe 807 is fixedly connected to one end of the second pipe 7, and the other end of the second connecting pipe 807 is provided with the first connecting pipe 806. The rotating frame 808 is fixedly connected to the outside of the second connecting pipe 807, and the inside of the rotating frame 808 is slidably connected to the outside of the first connecting pipe 806. The connecting rod 809 is provided inside the rotating frame 808, and one end of the connecting rod 809 is fixedly connected to the rotating knob 8011. 0. A second spring 8011 is provided at one end of the rotary knob 8010; the sliding ring 803 is slidably connected to the outside of the support frame 804 inside the support housing 801; the bottom end of the first spring 805 is provided inside the first pipe 6; one end of the sliding block 802 is provided outside the second pipe 7; one end of the first connecting pipe 806 is fixedly connected to one end of the first pipe 6; the inside of the first connecting pipe 806 is provided outside the connecting rod 809; the inside of the rotating frame 808 is provided at one end of the second spring 8011; and the inside of the rotating frame 808 is provided outside the rotary knob 8010.

[0035] Specifically, in this embodiment, by attaching the second connecting pipe 807 to the first connecting pipe 806, and then rotating the second pipe 7 to simultaneously drive the second connecting pipe 807 and the rotating frame 808 to rotate, the rotating frame 808 is connected to the outside of the first connecting pipe 806. A connecting rod 809, a second spring 8011, and a rotating knob 8010 are then inserted inside. Rotating the rotating knob 8010 drives the connecting rod 809 to rotate, and the rotating knob 8010 also drives the second spring 8011 to compress, so that the rotating frame 808 supports the connecting rod 809 and the second spring 8011. This achieves the effect of connecting the second pipe 7 externally. The rapid connection of the drainage pipe can control the water level in the foundation pit and reduce the impact of water accumulation on the lateral pressure of the soil.

[0036] Example 3:

[0037] Reference Figure 1 , Figure 2 and Figure 7 A pulling assembly 9 is provided on the outside of the sliding plate 5, and the outside of the pulling assembly 9 is located inside the foundation pit body 1. The pulling assembly 9 includes a rotating rod 901, which is rotatably connected to the outside of the sliding plate 5. A U-shaped frame 902 is fixedly connected to the top of the rotating rod 901, and a pulling handle 903 is rotatably connected inside the U-shaped frame 902. The outside of the pulling handle 903 is rotatably connected to the outside of the foundation pit body 1, and the outside of the sliding plate 5 is slidably connected to the inside of the foundation pit body 1.

[0038] Specifically, by pulling the pull handle 903, the U-shaped frame 902 is rotated, and the foundation pit body 1 supports the rotation of the pull handle 903 and provides support force for the pull handle 903. Then, the U-shaped frame 902 drives the rotating rod 901 to rotate synchronously, and the sliding plate 5 slides downward with the rotation of the rotating rod 901. However, the sliding plate 5 is made of polyethylene, which has good flexibility, low temperature resistance, strong waterproofness, and high chemical stability, thereby achieving the effect of blocking the leakage point and ensuring the durability and load-bearing capacity of the foundation structure.

[0039] Working principle: When a second pipe 7 needs to be connected externally, the second pipe 7 is first inserted into the interior of the first pipe 6. Then, the second pipe 7 drives the sliding block 802 to slide, and at the same time, drives the sliding ring 803 to slide upward, causing the support frame 804 to slide upward, thereby stretching the first spring 805. This tightens the connection between the second pipe 7 and the first pipe 6. The second pipe 7 can also be rotated to drive the second connecting pipe 807 to rotate, further connecting the rotating frame 808 to the outside of the first connecting pipe 806. Then, the connecting rod 809, the second spring 8011, and the rotating knob 8010 are inserted. Then, the rotating knob 8010 is rotated to drive the connecting rod 809 to rotate, thereby compressing the second spring 8011. This tightens the connection between the second connecting pipe 807 and the first connecting pipe 806, thus achieving the effect of connecting the second pipe 7 externally. The external pipe drains the accumulated water, rainwater, and construction wastewater in the pit, keeping the pit dry and preventing water accumulation from affecting the construction quality.

[0040] When it is necessary to block the leakage point, first pull the pull handle 903 to drive the U-shaped frame 902 to rotate. Then, the foundation pit body 1 supports the pull handle 903 to rotate, and the U-shaped frame 902 drives the rotating rod 901 to rotate. At the same time, it drives the sliding plate 5 to slide downward, so that the auxiliary rod 4 assists the sliding plate 5 to slide. In this way, the leakage point can be blocked. After the leakage point is blocked, it can avoid the formation of quality defects such as honeycomb and pitting due to water accumulation, and can ensure the durability and load-bearing capacity of the foundation structure.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A land-based foundation pit for a combined road-rail cross-sea bridge, comprising a foundation pit body (1), characterized in that: An installation base (2) is fixedly connected inside the foundation pit body (1). An installation groove (3) is provided inside the installation base (2). An auxiliary rod (4) is fixedly connected inside the foundation pit body (1). A sliding plate (5) is slidably connected inside the auxiliary rod (4). A first pipe (6) is fixedly connected inside the foundation pit body (1). A second pipe (7) is provided inside the first pipe (6). A locking component (8) is provided outside the second pipe (7). The locking component (8) is located at one end of the first pipe (6).

2. The land-based foundation pit for a dual-purpose (road and rail) cross-sea bridge according to claim 1, characterized in that: The locking assembly (8) includes a support housing (801), a sliding block (802), a sliding ring (803), a support frame (804), and a first spring (805). One end of the support housing (801) is fixedly connected to the outside of the second pipe (7). The sliding block (802) is slidably connected inside the support housing (801). The sliding ring (803) is slidably connected to the outside of the sliding block (802). The support frame (804) is fixedly connected to the outside of the sliding ring (803). The first spring (805) is provided at the bottom end of the support frame (804).

3. The land-based foundation pit for a dual-purpose (road and rail) sea-crossing bridge according to claim 1, characterized in that: The locking assembly (8) further includes a first connecting pipe (806), a second connecting pipe (807), a rotating frame (808), a connecting rod (809), a rotating knob (8010), and a second spring (8011). One end of the second connecting pipe (807) is fixedly connected to one end of the second pipe (7), and the other end of the second connecting pipe (807) is provided with the first connecting pipe (806). The rotating frame (808) is fixedly connected to the outside of the second connecting pipe (807), and the inside of the rotating frame (808) is slidably connected to the outside of the first connecting pipe (806). The connecting rod (809) is provided inside the rotating frame (808), and one end of the connecting rod (809) is fixedly connected with the rotating knob (8010). One end of the rotating knob (8010) is provided with the second spring (8011).

4. The land-based foundation pit for a dual-purpose (road and rail) sea-crossing bridge according to claim 2, characterized in that: The sliding ring (803) is slidably connected to the outside of the support frame (804) inside the support shell (801), the bottom end of the first spring (805) is located inside the first pipe (6), and one end of the sliding block (802) is located outside the second pipe (7).

5. A land-based foundation pit for a dual-purpose (road and rail) sea-crossing bridge according to claim 3, characterized in that: One end of the first connecting pipe (806) is fixedly connected to one end of the first pipe (6). The interior of the first connecting pipe (806) is located outside the connecting rod (809). The interior of the rotating frame (808) is located at one end of the second spring (8011). The interior of the rotating frame (808) is located outside the rotating knob (8010).

6. A land-based foundation pit for a dual-purpose (road and rail) sea-crossing bridge according to claim 1, characterized in that: The sliding plate (5) is provided with a pulling component (9) on its outside, and the outside of the pulling component (9) is provided inside the pit body (1).

7. A land-based foundation pit for a dual-purpose (road and rail) cross-sea bridge according to claim 6, characterized in that: The pulling assembly (9) includes a rotating rod (901), which is rotatably connected to the outside of the sliding plate (5). A U-shaped frame (902) is fixedly connected to the top of the rotating rod (901), and a pulling handle (903) is rotatably connected to the inside of the U-shaped frame (902).

8. A land-based foundation pit for a dual-purpose (road and rail) sea-crossing bridge according to claim 7, characterized in that: The pull handle (903) is externally rotatably connected to the outside of the pit body (1), and the sliding plate (5) is externally slidably connected to the inside of the pit body (1).

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