作者机构:
[Fu, Guihai; Wei, Limin] Cent S Univ, Coll Civil & Architectural Engn, Changsha 410075, Hunan, Peoples R China.;[Fu, Guihai] Hu Nan City Univ, Coll Civil Engn, Yiyang 413000, Peoples R China.;[Zhou, Hui] Hu Nan City Univ, Coll City Manage Engn, Yiyang 413000, Peoples R China.
通讯机构:
[Fu, Guihai] C;Cent S Univ, Coll Civil & Architectural Engn, Changsha 410075, Hunan, Peoples R China.
会议名称:
International Conference on Structures and Building Materials
会议时间:
JAN 07-09, 2011
会议地点:
Guangzhou, PEOPLES R CHINA
会议主办单位:
[Fu, Guihai;Wei, Limin] Cent S Univ, Coll Civil & Architectural Engn, Changsha 410075, Hunan, Peoples R China.^[Fu, Guihai] Hu Nan City Univ, Coll Civil Engn, Yiyang 413000, Peoples R China.^[Zhou, Hui] Hu Nan City Univ, Coll City Manage Engn, Yiyang 413000, Peoples R China.
会议论文集名称:
Advanced Materials Research
关键词:
Excess pore water pressure;Piles-driving;Single pile;Soft clay
摘要:
Prestressed concrete pipes construction by hammer cause high excess pore water pressure in deep soft soils because Soil disturbance by violent and poor permeability of soft soil. Taking the typical soft ground in passenger special line from Hang Zhou to Ning Bo as the engineering example, the in-situ measuring of the excess pore water pressure in saturated clay ground during the construction of the piles was carried out, and the comparison analysis with the solutions from Vesic theory was also done. The changing rules of excess pore water pressure and its influence range during the sinking of the piles were studied, which would provide an important basis for the design and construction of the similar projects.
作者机构:
[熊创贤; 邓运来; 曹盛强; 张新明] School of Materials Science and Engineering, Central South University, Changsha 410083, China;[熊创贤] Department of Civil Engineering, Hunan City University, Yiyang 413000, Hunan, China
通讯机构:
[Cao, S.-Q.] S;School of Materials Science and Engineering, Central South University, China
作者机构:
[刘浪; 孟茁超; 周科平] School of Resources and Safety Engineering, Central South University, Changsha, Hunan 410083, China;[孟茁超] College of Civil Engineering, Hunan City University, Yiyang, Hunan 413000, China
通讯机构:
School of Resources and Safety Engineering, Central South University, China
作者机构:
School of Geoscience and Info-Physics, Central South University, Changsha, Hunan, 410083, China;School of Civil Engineering, Hunan City University, China;China Construction Municipal Construction Corporation Limited, China
通讯机构:
School of Geoscience and Info-Physics, Central South University, China
作者机构:
[刘自由; 江学良] School of Civil Engineering, Hunan University of City, Yiyang 413000, China;[林杭] School of Resources and Safety Engineering, Central South University, Changsha 410083, China
通讯机构:
School of Civil Engineering, Hunan University of City, China
作者:
Li Wen-bin;Pan Qing-lin*;Xiao Yan-ping;He Yun-bin;Liu Xiao-yan
期刊:
中南大学学报(英文版),2011年18(2):279-284 ISSN:2095-2899
通讯作者:
Pan Qing-lin
作者机构:
[Pan Qing-lin; Li Wen-bin; Xiao Yan-ping; Liu Xiao-yan; He Yun-bin] Cent S Univ, Sch Mat Sci & Engn, Changsha 410083, Peoples R China.;[Li Wen-bin] Hunan City Univ, Sch Civil Engn, Yiyang 413000, Peoples R China.
通讯机构:
[Pan Qing-lin] C;Cent S Univ, Sch Mat Sci & Engn, Changsha 410083, Peoples R China.
关键词:
Al-Zn-Cu-Mg-Sc-Zr alloy;retrogression and re-aging treatment;microstructure;mechanical properties;stress corrosion cracking
摘要:
The mechanical properties and stress corrosion cracking (SCC) resistance of an Al-Zn-Cu-Mg-Sc-Zr alloy under different aging conditions were investigated. The dependence of microstructure and mechanical properties on aging parameters was evaluated by tensile test, hardness test and conductivity measurement. The results show that for the alloys with retrogression and re-aging treatment (RRA), the conductivity increases with the retrogression time and temperature, while the tensile strength decreases. The transmission electron microscopy (TEM) results show that the precipitates η(MgZn2) at grain boundary aggregate apparently with retrogression time and the precipitates inside the matrix exhibit the similar distribution to T6 temper, which comprises fine GP zones, large η′(MgZn2) and η(MgZn2) phases. According to the mechanical properties and microstructure observations, the optimal RRA regime is recommended to be 120 °C, 24 h + 180 °C, 30 min + 120 °C, 24 h. The strength level of the alloy after the optimum RRA treatment is similar to that in T6 condition and the SCC resistance is improved obviously in contrast to T6 condition.
作者机构:
[张可能; 黎永索] School of Geoscience and Info-Physics, Central South University, Changsha 410083, China;[李钟; 黄常波; 邓美龙] China Construction Municipal Construction Corporation Limited, Beijing 100163, China;[黎永索] School of Civil Engineering, Hunan City University, Yiyang, Hunan 413000, China
通讯机构:
School of Geoscience and Info-Physics, Central South University, China