- 摘 要
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（廣東省建筑設計研究院， 廣州 510010）
［摘要］以廣州白云國際機場擴建工程為背景，對大直徑鋼管混凝土柱的澆筑質量及對接焊縫的殘余應力進行檢測，進行了1∶1的鋼管混凝土柱施工模擬試驗。試驗在鋼管混凝土柱內(nèi)設置空洞、脫粘、不密實三種已知缺陷，采用超聲波徑向對測法進行密實度檢測，驗證該檢測技術的準確性；同時采用豪克能方法對鋼管柱對接焊縫殘余應力進行消減及并采用盲孔法進行檢測，證明該方法在實際工程中應用的可行性。試驗研究結果將為實際工程提供理論依據(jù)和技術保障，對類似大直徑鋼管混凝土柱工程施工質量的檢測具有重大的參考價值。
［關鍵詞］鋼管混凝土柱； 密實度檢測； 徑向對測法； 殘余應力；盲孔法
中圖分類號：TU398+.7文獻標識碼：A文章編號：1002-848X(2017)09-0050-05
Experiment on compactness detection of large diameter CFST column and residual stress reduction of butt weld
Zhang Zengqiu， Ou Tong， Tan Jian
(Architectural Design and Research Institute of Guangdong Province, Guangzhou 510010， China)
Abstract:Based on Guangzhou Baiyun International Airport expansion project, in order to detect the quality of concrete and residual stress of butt weld of large diameter concrete filled steel tube (CFST) column, construction simulation test on 1:1 CFST column model was carried out.Three known defects, empty holes,poor cementation and lacunas, were set in the CFST column.To verify the accuracy of compactness detection technology, diametrically ultrasonic detecting method was adopted to detect the quality of CFST column. Meanwhile, Haoke Energy forresidual stress reduction and blind hole method were used to detect residual stress of butt weld to prove the feasibility of practical application.The test results will provide a theoretical basis and technical support for the actual construction and have a great reference to compactness detection of large diameter CFST column in similar projects.
Keywords:CFST column;compactness detection; diametrically measurement method; residual stress; blind hole method
作者簡介：張增球，碩士，Email：zhangzengqiu@126.com。
