先张法预应力混凝土H型护岸桩的试验及应用  

Application and Experiment on Pretensioned Spun Concrete H-type Revetment Piles

作　　者：曾凯 干钢[1,2] 俞晓东 ZENG Kai;GAN Gang;YU Xiao-dong(The Architectural Design&Research Institute of Zhejiang University Co.,Ltd.,Hangzhou 310028,China;Center for Balance Architecture,Zhejiang University,Hangzhou 310028,China;Ningbo Yizhong Concrete Pile Co.,Ltd.,Ningbo 315450,China)

机构地区：[1]浙江大学建筑设计研究院有限公司,浙江杭州310028 [2]浙江大学平衡建筑研究中心,浙江杭州310028 [3]宁波一中管桩有限公司,浙江宁波315450

出　　处：《混凝土与水泥制品》2022年第11期44-48,共5页China Concrete and Cement Products

基　　金：住房和城乡建设部科技计划项目(2021-K-030);浙江大学平衡建筑研究中心自主立项科研项目(K横20203330C)。

摘　　要：设计了一种先张法预应力混凝土H型护岸桩,并通过足尺对比试验,研究了先张法预应力混凝土H型护岸桩的抗裂性能、抗弯(剪)承载力、变形能力及破坏特征。试验结果表明,先张法预应力混凝土H型护岸桩的抗弯破坏为受压区混凝土破坏,试验中钢绞线未断裂,桩身出现均布竖向裂缝;抗剪试验为受剪段混凝土斜裂缝开展后的混凝土剪压破坏,各项指标均达到设计要求。工程应用结果表明,设计的先张法预应力混凝土H型护岸桩可满足不同类型护岸工程的要求。A new type of pretensioned spun concrete H-type revetment pile was designed,and verified by full-scale comparative tests.And the crack resistance,flexural(shear)bearing capacity,deformation capacity and failure characteristics of the pretensioned spun concrete H-type revement piles were studied.The test results show that the flexural failure is the concrete failure in the compression zone,the tensile steel strand is not broken,and the pile body has vertical cracks distributed evenly.All indicators can reach the design requirements.The engineering application results show that the designed pretensioned spun concrete H-type revetment piles can meet the requirements of the different types of revetment projects.

关 键 词：先张法预应力混凝土H型护岸桩 钢绞线 抗弯性能 抗剪性能 工程应用 

分 类 号：TU528.7[建筑科学—建筑技术科学]