CN211713706U - A large cantilever prefabricated cover beam installation lattice support device - Google Patents

Abstract

The utility model discloses a large cantilever precast bent cap installation lattice supporting device, which comprises two precast bent caps and pier columns for supporting the bent caps; the temporary latticed supporting device comprises a base positioned at the bottom, more than two vertically connected latticed supporting units arranged on the base and a bearing adjusting mechanism positioned at the top and acting on the cover beam; each lattice supporting unit comprises vertical supporting rods which are distributed in a rectangular shape and lattice supporting rods which are used for supporting and connecting the vertical supporting rods in the horizontal direction; the vertical directions of the vertical supporting rods are connected through a detachable connecting piece; the utility model discloses safe and reliable reduces workman's labour, reduces the engineering time, reduces the material consumption.

Description

A large cantilever prefabricated cover beam installation lattice support device

technical field

The utility model relates to a large cantilever prefabricated cover beam installation lattice support device.

Background technique

In the construction of prefabricated cover beams, usually after the completion of the construction of the pier columns, brackets such as hoop corbels are erected on them to install the cover beams. In each installation, workers are required to construct the hoop corbels first. Erection is time-consuming and labor-intensive and extremely inconvenient. Further, because the support is stressed by the pier column, the safety and reliability cannot be well guaranteed; further, in the construction of prefabricated cover beams in cities, there are often limited ground roads. If the previous installation method of cover beam is used, it will even bring great inconvenience to people's life and travel; in addition, after the installation of the previous corbel hoop method is completed, the removal of the bracket is also time-consuming, labor-intensive and inconvenient, and the resources are not available. Moreover, it is very inconvenient to adjust the installation elevation when the original bracket is installed, and it needs to be formed at one time, otherwise the bracket needs to be re-assembled and disassembled to adjust the installation elevation of the cover beam; It is safe and reliable during installation, can be relatively simple to install and reduce labor, and can flexibly adjust the required installation elevation of the cover beam, and can also be recycled. Large cantilever prefabricated cover beam installation lattice support device.

SUMMARY OF THE INVENTION

The purpose of the utility model is to provide a large cantilever prefabricated cover beam installation lattice support device that can not only ensure the safety and reliability of the prefabricated cover beam during installation, but also can be relatively simple to install and reduce labor, and can be recycled.

The technical scheme of the utility model is as follows: a large cantilever prefabricated cover beam installation lattice support device, comprising a prefabricated cover beam divided into two sections and a pier column for supporting the cover beam; it is characterized in that it also includes a pair of A temporary lattice support device for supporting a cover beam, the temporary lattice support device includes a foundation at the bottom, two or more vertically connected lattice support units placed on the foundation, and a lattice support unit located at the top and acting on the cover beam. A load-bearing adjustment mechanism; each of the lattice support units includes vertical support rods distributed in a rectangle, lattice support rods for supporting and connecting the vertical support rods in the horizontal direction; between the vertical direction of the vertical support rods Connected by detachable connectors.

Further, the bearing adjustment mechanism includes a height-adjustable sand bucket and a bearing platform for carrying the sand bucket.

Further, the load-bearing platform of the load-bearing adjustment mechanism has two upper and lower layers, the vertical support rods are distributed in a rectangle, and two adjacent vertical support rods are a pair; the lower-layer load-bearing platform of the load-bearing adjustment mechanism includes two layers. The double-spliced I-beams that are horizontally erected on each pair of the vertical support rods, the upper layer of the bearing platform includes the beams directly acting on the sand barrel and vertically erected on the two lower beams, and the upper beams are also double beams. Split I-beam with reinforced ribs.

Further, the foundation at the bottom of the temporary lattice support device is a concrete foundation or a reinforced concrete foundation.

Further, the vertical connection between the vertical support rods is a flange connection, which is convenient for disassembly, installation and replacement.

Further, the lattice support unit is used by splicing two or more different or the same height according to the installation elevation of the cover beam.

Further, the lattice support rods of the lattice support unit are truss-type cross-connections between the vertical support rods.

Of course, further, the vertical support rod of the lattice support unit is a steel pipe, and the lattice support rod is a section steel or a steel pipe.

Furthermore, when the utility model works, the used lifting mechanism is used in conjunction with more than one crawler crane.

The advantages of the utility model are:

(1) The utility model firstly sets up a pair of temporary lattice support devices on both sides of the column according to the elevation requirements of the cover beam, and then uses two crawler cranes to jointly lift the cover beam divided into two sections to the column and the temporary lattice. The inner side of each cover beam is placed on the column, and the cantilever end is placed on the temporary lattice support device; the original support system for installing the cover beam by the hoop corbel method is directly omitted. This method is safe and reliable. Reduce worker labor, reduce construction time, and reduce material consumption.

(2) In this utility model, the foundation used is concrete foundation, which can be reused. When reused, it is only necessary to properly treat the original ground and fill the ground with fine sand to save time and effort and save materials.

(3) In this utility model, the lattice support units used are spliced with the same or different heights, and the lattice support units of different heights can be selected for splicing according to the specific prefabricated cover beam installation elevations. The selection is flexible and no workers are required. The elevation adjustment during manual construction improves work efficiency and operational convenience.

(4) In this utility model, the load-bearing adjustment mechanism used at the top is a sand tube, which can perform fine-tuning on the elevation. In view of the difficulty of fine-tuning the original hoop-cob-leg method, the construction quality, work efficiency and convenient operation are further improved. sex.

Description of drawings

Below in conjunction with accompanying drawing and embodiment, the utility model is further described:

Fig. 1 is the overall elevation view of the utility model;

2 is a front view and a left side view of the temporary lattice support device of the present invention.

Among them: 1. Cover beam; 2. Sand tube; 3. Loading platform; 31. Reinforcing rib; 4. Vertical support rod; 5. Lattice support rod; 6. Removable connector; 7. Foundation; 8. Bridge pier columns.

Detailed ways

Embodiment: Below in conjunction with Fig. 1 and Fig. 2 are shown the specific embodiment of a kind of large cantilever prefabricated cover beam installation lattice support device that the utility model provides, below we describe its structure in detail as follows:

A large cantilever prefabricated cover beam installation lattice support device is composed of a prefabricated cover beam 1 divided into two sections, a lifting mechanism for lifting the cover beam 1, a bridge pier column 8 and a pair of temporary lattice support devices. The temporary lattice support device is composed of a foundation 7 at the bottom, a number of vertically connected lattice support units placed on the foundation 7, and a sand tube 2 located at the top and acting on the cover beam; the lattice The height and number of the structural support units are selected according to the elevation of the cover beam; each of the described lattice support units is composed of vertical support rods 4 distributed in a rectangle, and lattice support rods 5 for supporting and connecting the horizontal direction of the vertical support rods. The vertical directions of the vertical support rods 4 are connected by flanges, which is convenient for disassembly, installation and replacement.

As shown in FIG. 2 , the load-bearing adjustment mechanism includes two height-adjustable sand barrels 2 and a bearing platform 3 for carrying the sand barrels 2 .

Preferably, the load-bearing platform 3 of the load-bearing adjustment mechanism has two upper and lower layers, the vertical support rods 4 are distributed in a rectangular shape, and two adjacent vertical support rods 4 are a pair; the lower layer of the load-bearing adjustment mechanism has two layers. The double-spliced I-beams that are horizontally erected on each pair of the vertical support rods 4, the upper layer of the bearing platform 3 is directly acting on the sand barrel 2 and is vertically erected on the two lower-layer steels, wherein the upper layer is The section steel is also a double-split type I-beam, and is provided with a reinforcing rib 31 .

As shown in Figures 1 and 2, the foundation 7 at the bottom of the temporary lattice support device is a reinforced concrete foundation. In actual use, it is only necessary to properly treat the original ground and fill the gap with the ground with fine sand, that is, It can be reused, and in the present invention, the reinforced concrete foundation is divided into two "cuboids", each of which carries two adjacent vertical support rods 4, which is further convenient for recycling and handling.

As shown in Figure 1, the lattice support units are several different or the same height to be spliced and used according to the installation elevation of the cover beam 1. In actual practice, the most approximate height and number of lattices after splicing are selected according to the elevation of the cover beam 1. The structural support unit is spliced, and the fine adjustment of the remaining height is completed by the sand barrel 2 .

As shown in FIG. 1 , the lattice support rods 5 of the lattice support unit are connected in a truss-type staggered manner between the vertical support rods 4 .

Preferably, the vertical support rods 4 of the lattice support unit are steel pipes, and the lattice support rods 5 are channel steels.

In the specific work of this embodiment, a typical double-column cantilever cover beam is used, and each cover beam is prefabricated in 1 section and two sections; the temporary lattice support device is erected according to the cover beam elevation: first, the lattice support is carried out according to the cover beam elevation. The number and height of the units are selected, and then we will properly handle the ground where the reinforced concrete needs to be placed. The gap between the reinforced concrete foundation and the ground is filled with fine sand, and then the reinforced concrete foundation is placed; the bottom lattice support unit is placed. On the basis of reinforced concrete, the lattice support units are stacked vertically according to the elevation of the cover beam, and flanges are used to connect the two vertically adjacent lattice support units; a bearing platform is erected on the top lattice support unit. 3 and sand tube 2, fine-tune the height of sand tube 2 according to the elevation of the cover beam; after all installation and debugging is completed, use two crawler cranes to lift the cover beam, so that one end of the cantilever of the cover beam is placed on the temporary grid. The installation and placement of the large cantilever prefabricated cover beam can be completed by placing the other end on the top of the structural support device and placing the other end on the pier column.

Of course, the above-mentioned embodiments are only intended to illustrate the technical concept and characteristics of the present utility model, and the purpose thereof is to enable those who are familiar with the technology to understand the contents of the present utility model and implement them accordingly, and cannot limit the protection scope of the present utility model with this. All modifications made according to the spirit and essence of the main technical solutions of the present invention should be covered within the protection scope of the present invention.

Claims (8)

1. A large cantilever prefabricated cover beam installation lattice support device, comprising a prefabricated cover beam (1) divided into two sections, a pier column (8) for supporting the cover beam; A temporary lattice support device for supporting a cover beam (1), the temporary lattice support device includes a foundation (7) at the bottom, two or more vertically connected lattice support units placed on the foundation (7), and a lattice support unit located on the foundation (7) A load-bearing adjustment mechanism acting on the top and acting on the cover beam (1); each of the lattice support units includes rectangularly distributed vertical support rods (4), used for supporting and connecting the vertical support rods (4) horizontally Lattice support rods (5) in the direction of the vertical support rods (5); the vertical directions of the vertical support rods (4) are connected by detachable connecting pieces (6). 2. A large cantilever prefabricated cover beam installation lattice support device according to claim 1, characterized in that the load-bearing adjustment mechanism comprises a height-adjusting sand barrel (2) and a sand barrel (2) for carrying the sand barrel (2). Carrying platform (3). 3. A large cantilever prefabricated cover beam installation lattice support device according to claim 1 or 2, characterized in that the load-bearing platform (3) of the load-bearing adjustment mechanism is two layers up and down, and the vertical support rod ( 4) It is a rectangular distribution, and two adjacent vertical support rods (4) are a pair; the lower layer of the bearing platform (3) of the load-bearing adjustment mechanism includes two transversely erected on the two pairs of the vertical support rods (4) The upper section of the bearing platform (3) includes section steel that acts directly on the sand barrel (2) and is vertically erected on the two lower section steels, and is provided with reinforcing ribs (31). 4 . The large cantilever prefabricated cover beam installation lattice support device according to claim 1 , wherein the foundation ( 7 ) at the bottom of the temporary lattice support device is a concrete foundation. 5 . 5. A large cantilever prefabricated cover beam installation lattice support device according to claim 1, characterized in that the detachable connector (6) connected in the vertical direction between the vertical support rods (4) is a orchid. 6. A large cantilever prefabricated cover beam installation lattice support device according to claim 1, characterized in that the lattice support unit is two or more different or the same height is selected and spliced according to the installation elevation of the cover beam (1). use. 7 . The large cantilever prefabricated cover beam installation lattice support device according to claim 1 , wherein the lattice support rods ( 5 ) of the lattice support unit are between the vertical support rods ( 4 ). 8 . Truss cross-connect. 8. A large cantilever prefabricated cover beam installation lattice support device according to claim 1 or 7, characterized in that the vertical support rod (4) of the lattice support unit is a steel pipe, and the lattice support rod (5) For section steel or steel pipe.

Images