Telescopic intelligent multi-functional inverted arch trestle and construction method using the same

Abstract

The invention belongs to the technical field of tunnel trestle, and discloses a telescopic intelligent multi-functional inverted arch trestle and a construction method using the same. The telescopic intelligent multi-functional inverted arch trestle a rear pedal, a connecting bridge body and a front pedal, wherein the connecting bridge body comprises a left main beam, a right main beam, a front cross beam, a rear cross beam and a connecting beam. The front pedal is positioned above the connecting beam, and the front pedal and the connecting beam are connected by a push-pull mechanism. The method includes the steps: arranging the front leg in the inverted arch that was initially dug, placing the rear wheels of the trestle on the finished flat surface, digging the inverted arch forward for adistance, extending the front pedal forward so that the front end of the front pedal is just in front of the inverted arch, wherein materials in front of the inverted arch are transported outward through the front pedal, connecting the bridge body and the rear pedal, retracting the front pedal after the tunnel is excavated forward for a certain distance, continuing excavating the inverted arch, and then extending the front pedal, thereby accelerating the construction progress and shortening the construction period; the solidification time of cement is fully satisfied and the engineering quality is improved.

Description

technical field [0001] The invention belongs to the technical field of trestle bridges, in particular to a telescopic intelligent multifunctional inverted arch trestle bridge and a construction method using the trestle bridge. Background technique [0002] With the rapid development of my country's economy, various infrastructures in our country are also constantly developing and improving. Due to the complex terrain and region, it is necessary to build a large number of tunnels to meet the production and living requirements when constructing infrastructure such as roads and railways. In tunnel construction, in order to shorten the construction period, while excavating in front of the tunnel, the bottom of the tunnel needs to be lined with concrete, but the earth or stones produced by the excavation need to be transported out of the tunnel through the tunnel section being lined, so the tunnel trestle was developed To realize the transportation problem of the concrete lining ...

AI Technical Summary

Problems solved by technology

The existing trestle bridge includes a rear pedal, a connecting bridge body and a front pedal, and the connecting bridge body includes a left main beam, a right main beam, a front crossbeam, a rear crossbeam and a connecting beam, and a front support leg is arranged below the front crossbeam, The rear wheels of the trestle are arranged below the rear crossbeam, and the front pedal and the rear pedal are all fixed to the connecting bridge body. Every time a section is excavated (generally 3 meters), the trestle needs to be moved forward once. The above method has the following defects: one , when the trestle bridge moves forward, all work surfaces stop working, which affects the construction progress and prolongs the construction period; secondly, because the rear pedal of the trestle bridge is located on the flat road surface that has been prepared, due to the use of advanced excavating machinery, excavation The progress is fast, and the time for excavating the 3-meter inverted arch is greatly shortened, but it takes a long time for the cement to solidify. The cement at the back of the trestle needs to be cured before moving the trestle forward. When the cement behind the trestle is solidified, various processes are stopped to wait for the cement to solidify.

Images