预应力混凝土0#块预压方案及经济比选

Pre Compression Scheme and Economic Comparison of Prestressed Concrete 0#Block

预应力混凝土连续梁,在近几年铁路建设中越来越多。预应力混凝土连续梁跨越既有线路(铁路、公路、航道等),因此预应力混凝土连续梁施工备受关注,在安全、质量、进度(涉及到大吨位预应力混凝土预制梁的铺架)各个方面都是卡控重点,同时因为备受关注,施工单位工期压力与资金压力很大。本文是在安全与质量的前提下,积极探索新方法,缩短工期,降低成本。影响预应力混凝土连续梁施工的因素很多,本文选取0#块预压为研究点。

Prestressed concrete continuous beams have become more and more popular in railway construction in recent years.The prestressed concrete continuous beam spans the existing lines(railways,highways,waterways,etc.),so the construction of prestressed concrete continuous beam has attracted much attention.It is the key point of control in all aspects of safety,quality,and progress(involving the laying of large tonnage prestressed concrete precast beams).At the same time,because of the great attention,the construction unit has great pressure on construction period and funds.Under the premise of safety and quality,this paper actively explores new methods to shorten the construction period and reduce costs.There are many factors that affect the construction of prestressed concrete continuous beams.In this paper,0#block preloading is selected as the research point.