A Frictional Slip Energy Dissipation Shock Absorber for Multi-span Simply Supported Beams

Abstract

The invention discloses a friction sliding energy-consuming and damping device of a multi-span simply supported beam. The friction sliding energy-consuming and damping device comprises a plurality offirst hydraulic cylinders which are vertically arranged, a horizontal plate is arranged at the top ends of the first hydraulic cylinders, and the horizontal plate is provided with a plurality of groups of bridge sliding devices. Pressing-pushing devices are arranged on one sides of second vertical plates, the pressing-pushing devices comprise hydraulic pressing-pushing oil cylinders, and the hydraulic pressing-pushing oil cylinders are provided with distance measuring sensors and pressure sensors. One ends of the hydraulic pressing-pushing oil cylinders are connected with third vertical plates, and the other ends of the hydraulic pressing-pushing oil cylinders are in contact with the third vertical plates. The second vertical plates are provided with inclined rods used for supporting the hydraulic pressing-pushing oil cylinders, and the inclined rods, the hydraulic pressing-pushing oil cylinders and the second vertical plate form triangles. The friction sliding energy-consuming and damping device of the multi-span simply supported beam has the beneficial effects that firstly, precast bridges are hoisted, the precast bridges are subjected to fine adjustment after hoisting to a preset position by the pressing-pushing devices and jacks, so that end portions of two adjacent precast bridges are attached with each other to facilitate subsequent construction.

Description

technical field [0001] The invention mainly relates to the field of bridge construction, in particular to a frictional sliding energy consumption damping device for multi-span simply supported beams. Background technique [0002] Nowadays, with the rapid development of traffic, a large number of viaducts need to be built in the construction of bridges, high-speed rail, high-speed, light rail, and overpasses. If the construction of viaducts is all cast-in-place, they can only be constructed section by section during construction. After the pouring is completed, it is necessary to wait for the bridge deck The next step of construction can only be carried out when the predetermined strength is reached. With this construction method, the progress of the project is slow. Most of them now adopt the method of prefabricated bridges. After the foundation columns are built, the prefabricated bridges will be hoisted and assembled. The gap between the adjacent prefabricated bridges is t...

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Problems solved by technology

[0002] Nowadays, with the rapid development of traffic, a large number of viaducts need to be built in the construction of bridges, high-speed rail, high-speed, light rail, and overpasses. If the construction of viaducts is all cast-in-place, they can only be constructed section by section during construction. After the pouring is completed, it is necessary to wait for the bridge deck The next step of construction can only be carried out when the predetermined strength is reached. With this construction method, the progress of the project is slow. Most of them now adopt the method of prefabricated bridges. After the foundation columns are built, the prefabricated bridges will be hoisted and assembled. The gap between the adjacent prefabricated bridges is too large, and the horizontal displacement of the post-installed prefabricated bridge needs to be fine-tuned. When the viaduct slopes, the inclination angle of the prefabricated bridge must be adjusted to complete the assembly. It is not easy to control, and it is more difficult to adjust the inclination angle. The mass of the prefabricated bridge is relatively large, and the difficulty of manual movement is very great. Improvement, the difficulty of improvement is that when the prefabricated bridge is fine-tuned by the hoisting equipment, due to the high quality of the prefabricated bridge, it is necessary to overcome the uncertain factors brought about by the momentum generated by the movement of the prefabricated bridge during the fine-tuning to the hoisting equipment

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