A bridge transverse anti-fall beam device and its construction method

Abstract

The invention discloses a bridge transverse anti-fall beam device and a construction method thereof. The device comprises two transverse anti-fall beam mechanisms respectively arranged at the bottom of two adjacent main beam sections. The main girder is arranged in the transverse bridge direction, and the two are symmetrically arranged on the front and rear sides of the upper part of the pier; each horizontal anti-fall beam mechanism includes a bottom fixing plate fixed on the outer wall of the pier, and two The upper fixed plate on the upper side and two steel tie rods respectively connected between the bottom fixed plate and the two upper fixed plates; the method includes steps: 1. component factory processing; 2. pier construction and bottom fixed plate installation; 3. Sectional construction of the main beam and installation of the upper fixed plate; 4. Installation of steel tie rods. The invention has the advantages of reasonable design, simple construction and good use effect, can reduce the impact of earthquakes, prevent beams from falling due to excessive lateral displacement of bridges when earthquakes occur, and can solve various problems existing in existing anti-falling beam devices.

Description

technical field [0001] The invention belongs to the technical field of bridge construction, and in particular relates to a bridge transverse anti-drop beam device and a construction method thereof. Background technique [0002] In recent years, with the rapid development of bridges and construction projects in my country, various construction projects with new structural forms and functions have emerged. my country has put forward a special mission for bridge projects. Specifically, after strong earthquakes, bridges must still be maintained Basic traffic requirements, which requires the installation of anti-drop beam devices. [0003] Displacement earthquake damage of bridge superstructure is very common in earthquakes, and excessive lateral displacement is one of the main forms of earthquake damage. Excessive lateral displacement will cause misalignment of bridge joints, excessive support movement and damage or even drop of beams, making the bridge unusable. For bridges wit...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a bridge transverse anti-fall beam device for the above-mentioned deficiencies in the prior art. When the earthquake occurs, the bridge’s lateral displacement is too large to cause the beam to fall, and it can solve the problems of easy damage, low reliability, and high investment cost of the existing anti-fall beam device

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