50m大跨度T梁预制关键性工序施工技术研究

• 作 者: 李进
• 机 构: 山西省交通建设工程监理总公司,
• 出 处: 建筑知识
• 发表日期: 2017年14期
• 关键词: 施工技术 大跨度 T梁预制 混凝土浇筑 张拉控制 横向刚度 预应力筋张拉 伸长值 钢绞线 后张预应力

随着经济的发展,人们对于建筑工程的质量也提出了更高的要求。鉴于大跨度T梁施工和应用的特殊性,在进行设计时需要对腹部板、梁高等给予更多的重视,一般来说T梁的高度较大且腹部板较薄,横向刚度较差,因而进行混凝土浇筑和张拉控制的难度也比较大。T梁预制的混凝土浇筑以及预应力张拉的控制也就成为施工的关键性工序。本文结合50m大跨度T梁预制的施工特点,就关键性工序的施工技术进行了研究。

With the economic development, people also put forward higher requirements on the quality of construction projects. In view of the particularity of construction and application of long-span T-beams, more attention should be paid to the design of abdominal plates and beams when designing. Generally speaking, the height of T-beams is large and the abdominal plates are thinner and the transverse rigidity is poor. Therefore, Concrete pouring and tension control is also more difficult. T-beam prefabricated concrete pouring and prestressed tension control will become the construction of the key processes. In this paper, 50m long-span T-beam prefabricated construction features, the key process of construction technology has been studied.