Temporary supporting structure for highway slope excavation

Abstract

The utility model discloses a road slope excavation temporary support structure which comprises U-shaped channel steel, wood plates, steel ropes and round steel rods, the U-shaped channel steel is arranged at the slope toe of the lower portion of a slope at intervals, the two round steel rods which are connected in a crossed mode are installed between every two adjacent U-shaped channel steel, the multiple wood plates are further embedded between the U-shaped channel steel, and the steel ropes are arranged on the wood plates. The steel cables penetrate through the tops of the two side plates of the U-shaped steel channel and are fixedly connected with the anchor rods, so that the structure is convenient to mount, dismount and construct, the dispersed structures are connected into a whole, and the overall rigidity, strength and stability are enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of highway safety protection, and specifically relates to a temporary support structure for highway slope excavation. BACKGROUND

[0002] In the prior art, the high slope has completed self-coordinated deformation after years of consolidation deformation, and the slope is in a relatively stable state. In the process of widening the expressway, the existing high slope needs to be removed and the slope is cut in full section. After the secondary construction starts, the stress field of the high slope starts to change. With the progress of the construction, the stress field of the existing high slope will continue to change until the stress field remains stable after a period of time after the construction is completed. During the adjustment of the slope stress field, the slope is in an unstable stage, and the influence of rainfall causes the soil and gravel on the surface of the slope body to slide down along the slope surface, which greatly affects the normal operation of the existing expressway.

[0003] In the prior art, the temporary support of the secondary excavation of the expressway slope is usually a bent structure composed of wooden boards. On the one hand, the wooden structure lacks high strength, and for high and steep rock-soil slopes, it is easy to be eroded by rainwater, causing a large amount of rock-soil body to slide down, resulting in the destruction of the temporary support of the wooden structure and endangering the safety of public property. On the other hand, the temporary support composed of wooden structures is inconvenient to install, has low reuse rate, is not conducive to disassembly, and is difficult to install quickly in narrow construction sites, which affects the construction progress. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the above problems, the utility model provides the following technical scheme.

[0005] A temporary support structure for highway slope excavation, comprising a U-shaped channel steel, a wooden board, a steel cable, and a circular steel rod 5, a plurality of equal-length U-shaped channel steels are arranged at intervals at the low part of the slope toe, two cross-connected circular steel rods are installed between the upper parts of the side flanges of two adjacent U-shaped channel steels, and a plurality of long wooden boards are embedded between the middle and lower parts of the two adjacent U-shaped channel steels. The middle and lower parts of the two side flanges of each U-shaped channel steel are symmetrically provided with through holes, the wooden boards are embedded in the through holes, and the steel cable is fixedly connected with the anchor rod embedded in the slope from the top of the two side flanges of the U-shaped channel steel.

[0006] Every two U-shaped channel steels are fixedly connected with the anchor rod through the steel cable.

[0007] The two side wings of the U-shaped channel steel are symmetrically provided with circular holes in the upper portion, the circular steel pole is provided with a bolt hole in the middle, the two U-shaped channel steels are crossed and fixed by bolts, the two ends of the circular steel pole arranged in each pair of crossing are embedded into the circular holes of the two U-shaped channel steels, the circular steel pole is a solid column structure and has good rigidity and strength, the circular short columns are connected together, the crossing arrangement makes the structure more stable, and the overall strength of the temporary support is enhanced.

[0008] The through holes are arranged at intervals along the length direction of the U-shaped channel steel and are configured as squares.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows: (1) the U-shaped channel steel is installed, the wood plates are spliced, and the circular steel columns are installed, so that the installation and dismounting are more convenient and simple, timely installation and timely dismounting are realized, the construction is facilitated, and the construction progress is accelerated; (2) the dispersed U-shaped channel steels are connected into a whole through the installation and fixation of the circular steel columns, so that the overall strength of the temporary support is enhanced; (3) the overall strength of the temporary support is enhanced through the application of the steel cable and the inner anchor rod of the slope, so that the supporting effect of the temporary support is enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is a structural front view of the utility model;

[0011] Figure 2 It is a structural schematic view of the utility model;

[0012] Figure 3 It is a structural schematic view of the U-shaped channel steel;

[0013] Figure 4 It is a structural schematic view of the circular steel pole. DETAILED DESCRIPTION

[0014] The drawings are only used for illustrative description and cannot be understood as the limitation of the utility model; in order to better illustrate the embodiment, some components in the drawings can be omitted, enlarged or reduced, and the size of the actual product is not represented; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings can be omitted; the position relationship described in the drawings is only used for illustrative description and cannot be understood as the limitation of the utility model. The utility model will be further described in detail in combination with the specific embodiment.

[0015] As Figures 1-4As shown, a highway slope excavation temporary support structure includes U-shaped channel steel 1, wood board 3, steel cable 4, round steel rod 5, multiple equal-length U-shaped channel steel 1 is buried at the slope low part toe, U-shaped channel steel 1 includes first U-shaped channel steel and second U-shaped channel steel, every two first U-shaped channel steel is provided with a second U-shaped channel steel, steel cable 4 is connected to the anchor rod buried in the slope after passing through the top of the two side wings of the second U-shaped channel steel, two cross-connected round steel rods 5 are installed between the upper parts of any two adjacent U-shaped channel steels 1, and a plurality of long wood boards 3 are embedded between the middle and lower parts of the two adjacent U-shaped channel steels 1, the wood board 3 is located in the through hole 102 of the round steel rod 5, and the middle and lower parts of the U-shaped channel steel 1 are arranged with a plurality of through holes 102 along the length direction, and the through hole 102 is configured as a square.

[0016] Further, two round holes 101 are symmetrically arranged on the upper parts of the two side wings of the U-shaped channel steel 1, a bolt hole 501 is arranged in the middle of the round steel rod 5, the two round steel rods 5 are crossed and connected through the bolt 502, and the two ends of each pair of cross-arranged round steel rods 5 are embedded in the round holes 101 of the two side U-shaped channel steels.

[0017] Further, the steel cable 4 is pulled out to the two sides at 45° from the steel cable hole 201 of the top side wing of the second U-shaped channel steel, and is fixed on the existing anchor rod in the slope, the whole support provides shear support through the insertion of each U-shaped channel steel into the toe, all U-shaped channel steels are connected as a whole through the wood board and the cross round steel rod, the shear resistance of each U-shaped channel steel is superimposed into the whole support, in addition, the use of the anchor rod connected through the steel cable 4 applies additional tension to the whole temporary support, enhances the shear strength of the temporary support, effectively prevents the temporary support from overturning due to the sliding of the gravel soil block, and enhances the supporting effect of the temporary support.

Claims

1. A temporary support structure for highway slope excavation, characterized by, It includes U-shaped channel steel (1), wood board (3), steel cable (4), round steel bar (5), a plurality of equal length U-shaped channel steel (1) are arranged at interval at slope low part toe, two cross connecting round steel bars (5) are installed between upper portions of side wing plates of two adjacent U-shaped channel steel (1), a plurality of long wood boards (3) are also embedded between middle lower portions of two adjacent U-shaped channel steel (1), middle lower portions of two side wing plates of each U-shaped channel steel (1) are provided with through hole (102) in symmetry, wood board (3) is embedded in the through hole (102), steel cable (4) is fixedly connected with anchor rod embedded in slope from the top of two side wing plates of U-shaped channel steel (1).

2. A temporary support structure for highway slope excavation according to claim 1, wherein, Every two U-shaped channel steel (1) among all U-shaped channel steel (1) is provided with one U-shaped channel steel (1) fixedly connected with anchor rod through the steel cable (4).

3. The temporary support structure for highway slope excavation according to claim 1, wherein, Two round holes (101) are respectively provided in symmetry in upper portions of two side wing plates of the U-shaped channel steel (1), bolt opening (501) is provided in the middle of the round steel bar (5), two round steel bars (5) are crossed and connected through bolt (502), two ends of each pair of cross arranged round steel bars (5) are embedded in the round holes (101) of two side U-shaped channel steel.

4. The temporary support structure for highway slope excavation according to claim 1, wherein, The through hole (102) is arranged at interval along the length direction of U-shaped channel steel (1), and is configured as square.

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