Structure and construction method of lightweight embankment structure and construction method of cast-in-place baffle plate foam concrete without conical slope of bridge head

Abstract

The invention relates to a non-bridgehead-conical-slope cast-in-situ baffle foam concrete light embankment structure and a construction method. The structure mainly comprises an upright, a cast-in-situ concrete baffle, a baffle foundation, a cover beam, embedded thread sleeves, template stay bars, template guide fixing plates, a side die, opposite-pull screws, template fixing plates, baffle connecting reinforcing steel bars, template fixing screws, connecting keys, fastening nuts, transverse connecting ribs, transverse connecting rib end plates, anti-shearing ribs, vertical connecting ribs, reinforcing steel bar fixing plates, V-shaped pulling pieces, an upper layer reinforcing mesh, transitional section foam concrete and joint section foam concrete. The method includes the main construction steps of firstly, ground stabilization, secondly, embedment of embedding parts, thirdly, reinforced cushion layer construction, fourthly, baffle foundation construction, fifthly, baffle construction, sixthly, reinforcing mesh laying construction, seventhly, foam concrete filling, eighthly, water permeating layer laying, and ninthly, road surface laying. By the adoption of the construction method, construction of the embankment structure can be achieved under the condition that no bridgehead conical slope is arranged, and the economic and technical benefits are relatively good.

Description

technical field [0001] The invention relates to a construction method of a foam concrete lightweight embankment structure with a cast-in-place baffle plate on a soft foundation without a conical slope at a bridge head. Background technique [0002] In the construction of highway bridge and culvert structures on soft soil foundation, there is a problem of settlement difference between the embankment and the structure, which is easy to cause bridge head jumping, structure damage and embankment instability and other diseases. To deal with bridge head jumping, methods such as plastic drainage boards, surcharged preloading, and low-grade concrete piles are usually used to prevent and control. From the point of view of the high-grade highways that have been put into use, especially the expressways, the effect is not good after they are completed and put into operation. There are still many problems in the transition section of the road and bridge. The car jumped at the backfill o...

AI Technical Summary

Problems solved by technology

For high embankment bridge heads, more land needs to be occupied due to the setting of conical slopes, and more space under the bridge will be encroached on, which also increases the length requirements of the bridge to a certain extent.

Images