CN219568582U

CN219568582U - Assembled combined foundation pit trestle structure

Info

Publication number: CN219568582U
Application number: CN202320395876.5U
Authority: CN
Inventors: 顾徐锐
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-03-06
Filing date: 2023-03-06
Publication date: 2023-08-22
Anticipated expiration: 2033-03-06

Abstract

The utility model relates to the technical field of foundation pit trestle, in particular to an assembled combined foundation pit trestle structure, which comprises a reinforced concrete trestle girder, a section steel secondary beam arranged on the reinforced concrete trestle girder and a steel plate pavement paved on the section steel secondary beam, wherein a plurality of embedded high-strength bolts are arranged in the reinforced concrete trestle girder, the embedded high-strength bolts are uniformly distributed and arranged, upper high-strength nuts are sleeved at the upper ends of the embedded high-strength bolts in a threaded manner, the bottom of the section steel secondary beam is fixedly connected with the reinforced concrete trestle girder through the embedded high-strength bolts, and round grooves are formed in the positions, located on the upper sides of the upper high-strength nuts, of the side walls of the embedded high-strength bolts. The utility model can prevent the upper height Jiang Luomu from falling from the embedded high-strength bolt due to vibration, reduce potential safety hazard and increase the structural strength between the embedded high-strength bolt and the reinforced concrete trestle girder.

Description

Assembled combined foundation pit trestle structure

Technical Field

The utility model relates to the technical field of foundation pit trestle, in particular to an assembled combined foundation pit trestle structure.

Background

Along with the development of urban underground space, foundation pit engineering in cities is developed towards larger and deeper, and the construction sites of the foundation pit engineering are narrow and surrounding buildings are dense, so that the requirement on the utilization rate of the construction sites in the foundation pit is high, and under the condition, the construction trestle is generally arranged in engineering to utilize the sites in the foundation pit. Common construction trestle falls into two kinds, firstly, reinforced concrete trestle, and secondly, steel construction trestle.

In the patent number CN208121776U, a fabricated recyclable steel concrete combined foundation pit trestle structure is disclosed, and comprises a reinforced concrete main beam, a section steel secondary beam and an upper detachable steel plate pavement structure, wherein the section steel secondary beam is erected on the reinforced concrete main beam, and the upper part of the section steel secondary beam is paved with the detachable steel plate pavement to form a stressed structure. According to the utility model, the bolts are embedded in the upper part of the reinforced concrete main beam and are connected with the section steel secondary beam to form the trestle structure, and the combined trestle structure can serve as a supporting trestle and a foundation pit horizontal supporting stressed structure, so that the design requirements on bending moment and shearing force of the supporting structure are met.

The above patent has the following problems:

after the nut and the bolt are screwed up, the nut is not limited, the foundation pit trestle is easy to loosen due to vibration after being used for a long time, and then the nut can fall off the bolt, so that the potential safety hazard is increased, and the assembled combined foundation pit trestle structure is provided.

Disclosure of Invention

The utility model aims to provide an assembled combined foundation pit trestle structure, which not only can prevent an upper height Jiang Luomu from falling from an embedded high-strength bolt due to vibration and reduce potential safety hazards, but also can increase the structural strength between the embedded high-strength bolt and a reinforced concrete trestle girder so as to solve the problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides an assembled combination formula foundation ditch landing stage structure, includes reinforced concrete landing stage girder, sets up the shaped steel secondary beam on the reinforced concrete landing stage girder and lays the steel sheet road surface on the shaped steel secondary beam, the inside of reinforced concrete landing stage girder is provided with a plurality of pre-buried high strength bolts, a plurality of evenly distributed sets up between the pre-buried high strength bolts, a plurality of the upper end screw thread of pre-buried high strength bolts has cup jointed the nut that excels in, the bottom of shaped steel secondary beam is through pre-buried high strength bolt and reinforced concrete landing stage girder fixed connection, the lateral wall of pre-buried high strength bolt is located the upside department of the nut that excels in and has seted up the circular slot, the circular slot internal fixation is equipped with the stop gear that can prevent to excel in nut and pre-buried high strength bolt and drop, the bottom of reinforced concrete landing stage girder evenly is provided with a plurality of evenly distributed's landing stage stands.

Preferably, the limiting mechanism comprises a round block, the round block is arranged in the round groove in a sliding manner, one end of the round block extends to the outside of the round groove, a spring is fixedly connected to the bottom of the round groove, a pull rope is arranged in the spring, two ends of the pull rope are fixedly connected with the bottom of the round groove and the round block respectively, an inclined plane is formed in the upper side of one end of the round block, which is located outside the round groove, and the angle of the inclined plane is set to 45 degrees.

Preferably, the upper side and the lower side of the round block are both fixedly connected with limiting blocks, and the groove wall of the round groove is provided with limiting grooves matched with the two limiting blocks.

Preferably, the lower end screw thread of the embedded high-strength bolt is sleeved with a lower high-strength nut, and the outer side wall of the lower high-strength nut is uniformly and fixedly connected with a plurality of positioning rods.

Preferably, the U-shaped steel plate is fixedly welded at the upper end of the trestle upright post, and the lower end of the reinforced concrete trestle girder is arranged in the U-shaped steel plate.

Preferably, a plurality of reinforcing ribs are fixedly welded between the upper ends of the side walls of the trestle stand columns and the bottom of the U-shaped steel plate, and the plurality of reinforcing ribs are arranged in a wedge shape.

Compared with the prior art, the utility model has the beneficial effects that:

the lower end of the embedded high-strength bolt is buried in the reinforced concrete trestle girder in advance when the reinforced concrete trestle girder is poured, the structural strength between the embedded high-strength bolt and the reinforced concrete trestle girder is increased by the positioning rod, a corresponding bolt hole is reserved at the bottom of the section steel secondary beam, the section steel secondary beam is hung at the upper end of the reinforced concrete trestle girder, a plurality of embedded high-strength bolts penetrate through the corresponding bolt holes, the upper high-strength nuts are screwed up, the round block can be pushed inwards through the inclined plane through the upper high-strength nuts, the round block extrudes the spring, one end of the round block is pushed out of the round groove by the spring when the round block is positioned at the upper side of the upper high-strength nuts, the round block limits the upper high-strength nuts, the section steel secondary beam can be prevented from falling off the embedded high-strength bolts due to vibration, and potential safety hazards are reduced.

Drawings

Fig. 1 is a schematic structural diagram of an assembled foundation pit trestle structure.

Fig. 2 is a schematic side view of a assembled foundation pit trestle structure.

Fig. 3 is an enlarged schematic view of a portion a of fig. 2.

Fig. 4 is a schematic structural view of the embedded high-strength bolt in fig. 2.

In the figure: 1. trestle stand columns; 2. u-shaped steel plates; 3. a reinforced concrete trestle girder; 4. a section steel secondary beam; 5. a steel plate road surface; 6. reinforcing ribs; 7. a high-strength nut is arranged; 8. a circular block; 9. a limiting block; 10. a spring; 11. a pull rope; 12. embedding high-strength bolts; 13. a lower high-strength nut; 14. and a positioning rod.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 4, the present utility model provides a technical solution:

the utility model provides an assembled combination formula foundation ditch landing stage structure, including reinforced concrete landing stage girder 3, set up shaped steel secondary beam 4 on reinforced concrete landing stage girder 3 and lay the steel sheet road surface 5 on shaped steel secondary beam 4, the inside of reinforced concrete landing stage girder 3 is provided with a plurality of pre-buried high strength bolts 12, evenly distributed sets up between a plurality of pre-buried high strength bolts 12, the upper end screw thread of a plurality of pre-buried high strength bolts 12 has cup jointed and has been gone up high strength nut 7, the bottom of shaped steel secondary beam 4 is through pre-buried high strength bolt 12 and reinforced concrete landing stage girder 3 fixed connection, the circular slot has been seted up to the upside department that pre-buried high strength bolt 12 is located last high strength nut 7.

The lower end of the embedded high-strength bolt 12 is in threaded sleeve connection with the lower high-strength nut 13, the outer side wall of the lower high-strength nut 13 is uniformly and fixedly connected with a plurality of positioning rods 14, the structural strength between the embedded high-strength bolt 12 and the reinforced concrete trestle girder 3 can be increased by the positioning rods 14, and the lower high-strength nut 13 is directly in threaded connection with the embedded high-strength bolt 12 during installation.

The fixed stop gear that can prevent that upper high strength nut 7 and pre-buried high strength bolt 12 from droing that is equipped with in the circular slot, stop gear includes circular block 8, circular block 8 slides and sets up in the circular slot, the one end of circular block 8 extends to the outside in circular slot, the tank bottom fixedly connected with spring 10 of circular slot, spring 10 is compressed state all the time, the inside of spring 10 is provided with stay cord 11, stay cord 11 can provide spacingly to circular block 8, prevent that circular block 8 from moving away from the circular slot, the both ends of stay cord 11 respectively with the tank bottom and the 8 fixed connection of circular block of circular slot, the inclined plane has been seted up to the one end upside that circular block 8 is located the circular slot outward, the angle on inclined plane sets up to 45, the inclined plane makes can drive circular block 8 inwards slide when twisting upper high strength nut 7, the equal fixedly connected with stopper 9 of upper and lower both sides of circular block 8, the spacing groove of circular slot has been seted up with two stopper 9 matched with stopper walls, spacing groove and stopper 9 matched with can make the inclined plane of circular block 8 up all the time.

The bottom of reinforced concrete landing stage girder 3 evenly is provided with a plurality of evenly distributed's landing stage stand 1, and landing stage stand 1 can provide the support to reinforced concrete landing stage girder 3, and the fixed welding of upper end of landing stage stand 1 has U shaped steel board 2, and the lower extreme of reinforced concrete landing stage girder 3 sets up in U shaped steel board 2, and fixed welding has a plurality of strengthening ribs 6 between the lateral wall upper end of landing stage stand 1 and the bottom of U shaped steel board 2, and a plurality of strengthening ribs 6 set up to the wedge, and strengthening rib 6 has improved the structural strength between landing stage stand 1 and the U shaped steel board 2.

The lower high-strength nuts 13 are connected with the lower ends of the embedded high-strength bolts 12 through threads, when the reinforced concrete trestle girder 3 is poured, the lower ends of the embedded high-strength bolts 12 are embedded in the reinforced concrete trestle girder 3 in advance, corresponding bolt holes are reserved at the bottoms of the profile steel secondary girders 4, the profile steel secondary girders 4 are hung at the upper ends of the reinforced concrete trestle girder 3, a plurality of embedded high-strength bolts 12 penetrate through the corresponding bolt holes, the upper high-strength nuts 7 are screwed down, the upper high-strength nuts 7 can inwards push the round blocks 8 through inclined planes, the round blocks 8 squeeze the springs 10, when the round blocks 8 are located on the upper sides of the upper high-strength nuts 7, one ends of the round blocks 8 are pushed out of round grooves by the springs 10, at the moment, the round blocks 8 limit the upper high-strength nuts 7, the upper high Jiang Luomu can be prevented from falling from the embedded high-strength bolts 12 due to vibration, and potential safety hazards are reduced.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an assembled combination formula foundation ditch landing stage structure, includes reinforced concrete landing stage girder (3), sets up shaped steel secondary beam (4) on reinforced concrete landing stage girder (3) and lays steel sheet road surface (5) on shaped steel secondary beam (4), its characterized in that: the reinforced concrete trestle girder (3) is internally provided with a plurality of embedded high-strength bolts (12), a plurality of evenly distributed sets up between the embedded high-strength bolts (12), a plurality of upper end screw thread of embedded high-strength bolts (12) has cup jointed high-strength nut (7), the bottom of shaped steel secondary beam (4) is through embedded high-strength bolts (12) and reinforced concrete trestle girder (3) fixed connection, circular slot has been seted up to the upside department that the lateral wall of embedded high-strength bolts (12) is located high-strength nut (7), circular slot internal fixation is equipped with the stop gear that can prevent high Jiang Luomu (7) and embedded high-strength bolts (12) and drops, the bottom of reinforced concrete trestle girder (3) evenly is provided with a plurality of evenly distributed's trestle stands (1).

2. The assembled foundation pit trestle structure according to claim 1, wherein: stop gear includes circular piece (8), circular piece (8) slip sets up in the circular groove, the one end of circular piece (8) extends to the outside of circular groove, the tank bottom fixedly connected with spring (10) of circular groove, the inside of spring (10) is provided with stay cord (11), the both ends of stay cord (11) respectively with the tank bottom and the circular piece (8) fixed connection of circular groove, the inclined plane has been seted up to the one end upside that circular piece (8) are located the circular groove outside, the angle of inclined plane sets up to 45.

3. The assembled foundation pit trestle structure according to claim 2, wherein: limiting blocks (9) are fixedly connected to the upper side and the lower side of the round block (8), and limiting grooves matched with the two limiting blocks (9) are formed in the groove walls of the round grooves.

4. The assembled foundation pit trestle structure according to claim 1, wherein: the lower end screw thread of pre-buried high strength bolt (12) has cup jointed down high strength nut (13), the lateral wall of high strength nut (13) is even fixedly connected with a plurality of locating levers (14 down.

5. The assembled foundation pit trestle structure according to claim 1, wherein: the upper end of the trestle upright post (1) is fixedly welded with a U-shaped steel plate (2), and the lower end of the reinforced concrete trestle girder (3) is arranged in the U-shaped steel plate (2).

6. The assembled foundation pit trestle structure according to claim 1, wherein: a plurality of reinforcing ribs (6) are fixedly welded between the upper ends of the side walls of the trestle stand columns (1) and the bottom of the U-shaped steel plate (2), and the reinforcing ribs (6) are wedge-shaped.