先张法预应力空心板梁施工技术

Constructional technique of pretensioning cored slab beam

就先张法预应力混凝土空心板梁的施工过程作了详细的介绍 ,对施工中存在的问题作了相应的改进措施。按照混凝土空心板的质量要求 ,本着就地取材的原则 ,对水泥、砂石料以及外加剂进行了择优选用 ,用其浇注的混凝土进行精心养护 ,以保证混凝土的强度达到设计要求。

The paper introduces specific construction process of pretensioning cored slab beam at some length, improves existing problems in construction. According to quality demands of cored slab concrete and principle with local materials, slecting the best materials of cement ,sand and admixture, and maintaining the new pouring concrete, ensure that concrete strength will be reached.