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顶进施工法钢筋混凝土排水管局部变形测试与分析

Test and analysis of local deformation of reinforced concrete drainage pipes in jacking construction method
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摘要 为了检测钢筋混凝土排水管质量,采用外压荷载试验,通过荷载-应变曲线对2根钢筋混凝土排水管的裂缝荷载以及在各级荷载作用下的局部变形进行分析。测试结果表明,各测试面均出现不同程度的局部变形和裂缝。顶部为荷载集中区域,应变较大;两侧裂缝多居于管外壁,内壁较少。1号管裂缝荷载值为325 k N/m,2号管裂缝荷载值为324 k N/m。相同荷载下,1号管比2号管表现出更好的延展性能,具有更高的承载能力。2根钢筋混凝土排水管均满足GB/T 11836—2009《混凝土和钢筋混凝土排水管》Ⅲ级管裂缝荷载标准。 For the detection of reinforced concrete was carried out, and the cracking load of two reinforced different load were analyzed through load-strain curve. drainge pipes' quality, load test of the external pressure concrete drainage pipes and the local deformation under The test results indicated that the test surface showed varying degrees of local deformation and fracture. As top of pipes was the concentrated area of load, the defor- mation was larger; cracks happened on the outer wall of the pipes are much more than that happened on the in- ner wall. The cracking load values of pipe 1 and pipe 2 were 325 and 324 kN/m respectively. Under the same load, pipe 1 had better ductility and higher bearing concrete drainage pipes both met the requirement of Concrete and Reinforced Concrete Drainage Pipe. capacity than pipe 2. The quality of the said two reinforced class Ⅲ piping crack load standard in GB/T 11836--2009
出处 《工业用水与废水》 CAS 2017年第3期63-65,79,共4页 Industrial Water & Wastewater
基金 国家自然科学基金项目(51378238) 吉林省科技厅计划项目(20150203014SF) 吉林省教育厅"十二五"科学技术研究项目(2015267)
关键词 顶进施工法 外压荷载 破坏形态 局部变形 jacking construction method external pressure load destruction form local deformation
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  • 1中华人民共和国建材行业标准.顶进施工法用钢筋混凝土排水管(JC/T640-2010)[S].北京:中国标准出版社,2010.
  • 2中华人民共和国国家标准.混凝土和钢筋混凝土排水管试验疗法(GB/T16752-2006)[S].北京:中国标准出版社,2006.
  • 3中华人民共和国建材行业标准.混凝土和钢筋混凝土排水管(GB/11836-2009)[S].北京:中国标准出版社,2009.
  • 4高立志.非开挖地面铺设钢筋混凝土排水管施工技术探讨[J].黑龙江科技信息,2010(15):202-202. 被引量:1

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