Counter-force frame device for inclined throwing support construction

Abstract

The counter-force frame device comprises a plurality of fender posts, lock catches are fixed to the sides, needing to be supported, of the tops of the fender posts, the lock catches have an opening state and a closing state, in the closing state, the lock catches are in a closed geometric shape, and a round through hole is formed in the middle of each lock catch; the sliding frame is arranged between every two adjacent fender posts, and pivots are arranged on the two sides of the sliding frame and rotationally matched with the lock catches on the two fender posts respectively; the sliding frame is further provided with a hydraulic mechanism. The utility model can be applied to a method of firstly supporting and then excavating, and a supporting system is completed under the condition that a soil layer is not excavated.

Description

Technical Field

[0001] The utility model belongs to the technical field of civil engineering construction, and particularly relates to a reaction frame device for obliquely propping construction. Background Art

[0002] Building construction is inseparable from foundation pit engineering, and accordingly, foundation pit retaining piles and their construction technologies are becoming increasingly important. Oblique bracing is an important way for foundation pit retaining.

[0003] CN219732013U discloses a support system for oblique bracing, including a bottom plate fixed on the bottom surface of the foundation pit, and the bottom plate is provided with a support seat protruding upward. The support seat is provided with a plurality of mounting parts spaced apart in the vertical direction, and a rotating connection part is arranged between the support seat and the retaining wall; an adjusting member is adaptively installed on any of the mounting parts and has an exposed part; a bottom support plate, one end of which close to the retaining wall is rotatably connected to the rotating connection part, and the other end is lapped on the exposed part of the adjusting member; a length-adjustable support rod, the lower end of which is fixedly connected to the bottom support plate, and the upper end is rotatably connected with a support plate, and the support plate is pressed against and supports the retaining wall under the pressing action of the support rod; a connecting screw for detachably connecting the support plate to the retaining wall. This support system can adjust the support position of the retaining wall by changing the angle of the bottom support plate and the length of the support rod according to actual construction requirements, so as to change the position height of the support plate and the support angle for the retaining wall; however, it can only be applied to the construction method of excavation first and then bracing. In the excavation-first-and-then-bracing method, the soil is first excavated, and after excavating to a predetermined depth, the oblique support pile or other support structures are installed and applied. Since the support is not applied in time, the wall may generate large horizontal displacements and bending moments during the excavation process. Especially near the excavation surface, the displacement value of the wall may reach the maximum. Summary of the Invention

[0004] The purpose of the utility model is to provide a reaction frame device for obliquely propping construction, which can be applied to the construction method of bracing first and then excavating.

[0005] To this end, the technical solution adopted by the utility model is as follows: A reaction frame device for obliquely propping construction includes a plurality of retaining piles, and is characterized in that: a buckle is fixed on one side of the top of the retaining pile that needs to be supported. The buckle has two states of opening and closing. In the closed state, the buckle is a closed geometric shape with a circular through hole in the middle; it also includes a sliding frame arranged between two adjacent retaining piles. Both sides of the sliding frame are provided with pivot shafts, which are respectively rotationally matched with the buckles on the two retaining piles; the sliding frame is also provided with a hydraulic mechanism.

[0006] Further, there are two hydraulic mechanisms, which are respectively arranged on both sides of the sliding frame.

[0007] The described buckle consists of two parts, each with a semi-circular groove; the first ends of the two parts are rotatably connected by a fixed pin; the second ends of the two parts each have a pin hole. When the buckle is in the closed state, a movable pin passes through the pin hole at the second end to connect the two parts into one body, so that the two semi-circular grooves are combined to form a circular through hole.

[0008] When the utility model works, fixed retaining piles are buried in advance, and then according to the designed angle and the length of the sliding frame, the abutting point of the sliding frame is determined. Then, simple excavation is carried out at the abutting point to make one end of the support frame abut against the ground, and the other end is pivotally connected to the buckle of the retaining pile, so that the retaining pile, the ground and the sliding frame form a stable triangle. Then, precast components such as lattice columns are placed on the sliding frame, and a drill bit is arranged in the precast component to loosen the soil layer, so that the precast component can slide on the sliding frame, and then the precast component is pressed into the soil layer by a hydraulic mechanism. Combining operations such as forced stirring and grouting can permanently fix the precast component to form the required inclined bracing. After the construction is completed, the sliding frame can be disassembled for next use.

[0009] The method of first bracing and then excavating means that first, a groove is dug or a space is reserved at the support position, and an inclined precast component or other support structures are constructed and installed. After the support structure reaches the designed strength, the excavation of the soil body is carried out. Since the support structure is applied in time, the horizontal displacement and bending moment of the wall can be effectively controlled. Compared with the method of first excavating and then bracing, the displacement and bending moment values of the wall in the method of first bracing and then excavating are usually smaller. It can be seen that the utility model can be applied to the method of first bracing and then excavating to complete the support system without excavating the soil layer. Description of the Drawings

[0010] Figure 1 is a schematic structural diagram of the utility model.

[0011] Figure 2 is a schematic diagram of the retaining pile and the lock hole. Detailed Description of the Invention

[0012] Referring to the drawings. This embodiment includes several retaining piles 1, and a buckle 2 is welded and fixed at the top of each retaining pile. The buckle 2 consists of two parts 21 and 22, each with a semi-circular groove 211 and 221; the two parts 21 and 22 of the buckle are rotatably connected by a fixed pin 23, so that the angle between the two parts can be changed; when the two parts are closed, there is another movable pin to connect them into one body to form a closed geometric shape, and at the same time, the semi-circular grooves 211 and 221 are combined into a complete circle.

[0013] A sliding frame 3 is arranged between two adjacent retaining piles. Both sides of the sliding frame are provided with pivot shafts 31, which respectively extend into the circular holes of the locking catches on the two retaining piles, so as to be rotationally matched with the locking catches 2. Hydraulic mechanisms 4 are also respectively arranged on both sides of the sliding frame 3. When a lattice column is placed on the sliding frame, the lattice column can be pushed to press it into the soil layer.

Claims

1. A reaction frame device for inclined support construction, comprising a plurality of retaining piles, characterized in that: A lock is fixed on the top of the guardrail pile on the side that needs to be supported. The lock has two states: open and closed. In the closed state, the lock is a closed geometric shape with a circular through hole in the middle. It also includes a sliding frame, which is arranged between two adjacent guardrail piles. The sliding frame has pivots on both sides, which rotate with the locks on the two guardrail piles respectively. The sliding frame also has a hydraulic mechanism.

2. The reaction frame device for inclined bracing construction according to claim 1, characterized in that: There are two hydraulic mechanisms, which are respectively arranged on both sides of the sliding frame.

3. The reaction frame device for inclined bracing construction according to claim 1 or 2, characterized in that: The lock buckle is composed of two parts, each with a semicircular groove; the first ends of the two parts are rotatably connected by a fixed pin; the second ends of the two parts are each provided with a pin hole. When the lock buckle is in a closed state, a movable pin passes through the pin hole at the second end to connect the two parts into one, thereby merging the two semicircular grooves to form a circular through hole.

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