Intelligent positioning pouring system for steel shell concrete

Abstract

The invention discloses an intelligent positioning pouring system for steel shell concrete. The intelligent positioning pouring system comprises an intelligent positioning trolley, an intelligent positioning pouring hopper and steel rails. The intelligent positioning trolley is erected above a longitudinal steel rail, and the intelligent positioning pouring hopper is erected above a transverse rail at the top of the intelligent positioning trolley. The intelligent positioning trolley comprises a trolley frame, a control case, two-way wheels, a speed reduction frequency converter and a motor, the control case is arranged on supporting legs of the trolley frame, four two-way wheels are arranged at the bottoms of the supporting legs, the speed reduction frequency converter is arranged on theinner sides of two left-side two-way wheels, a frequency converter circuit communicates with the motor, and the transverse rail is laid on a top beam of the trolley frame. The intelligent positioningpouring system is easy and convenient to operate and high in reliability, only one person can operate the intelligent positioning pouring system, the automatic function and the manual function can beachieved at the same time, automatic back-and-forth material receiving is achieved through PLC program setting, the walking positioning precision is within the error of 3 cm, and the production cost of products such as manpower and materials is reduced.

Description

technical field [0001] The invention relates to the technical field of civil engineering equipment, in particular to an intelligent positioning pouring system and method for steel shell concrete. Background technique [0002] The Shenzhong Channel is a strategic cross-river channel connecting the two sides of the Pearl River. It is a cluster project integrating the "four-in-one" super-wide submarine tunnel, super-long-span bridge, deep-water artificial island, and underwater intercommunication. It has an unprecedented scale and extremely complex construction conditions. The technical difficulty has reached a new high, and it is another world-class major cross-sea transportation project in my country after the Hong Kong-Zhuhai-Macao Bridge. [0003] The deep-middle channel will adopt a "sandwich" structure steel shell concrete immersed tube (hereinafter referred to as steel shell concrete immersed tube), with a total length of 5035m, which is planned to be divided into 33 segm...

AI Technical Summary

Problems solved by technology

[0006] (1) Steel-shell immersed tube concrete has the characteristics of large cross-section, vibration-free, and self-filling. If the concrete fluidity is insufficient, it will be difficult for the concrete to completely fill the steel shell and form local cavities; if the cohesion is insufficient, the fluidity will be slightly greater At the same time, if the pouring rate is too fast, the air bubbles in the concrete cannot be discharged in time, and they are easy to accumulate on the surface, forming a large area of ​​pores and honeycomb pockmarks on the joint surface between the steel shell and the concrete.

[0007] (2) The water-binder ratio of self-compacting concrete is low and the amount of cementitious material is high, which will easily lead to large early shrinkage of concrete and the phenomenon of hollowing out between steel shell and concrete

[0008] (3) The floating pouring process may lead to concrete delamination, resulting in laitance or slurry bone separation; in high temperature weather, false coagulation is prone to occur during the pouring interval

[0009] (4) There are a large number of concrete steel shell compartments, and the manual construction of pouring concrete with high repeatability and consistency will lead to negligence and paralysis, and the pass rate cannot be guaranteed

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