2011 International Conference on Electric Technology and Civil Engineering (ICETCE)最新文献_第10页

Stable isotopes in precipitation in relation to the meteorological factors in Yangtze river basin 长江流域降水稳定同位素与气象因子的关系

2011 International Conference on Electric Technology and Civil Engineering (ICETCE) Pub Date : 2011-04-22 DOI: 10.1109/ICETCE.2011.5774415

Yuchuan Meng, Guodong Liu

引用次数: 0

Using GA-BP neural networks to analyze vertical bearing capacity of single rock-socketed pile 采用GA-BP神经网络对单桩嵌岩桩竖向承载力进行分析

2011 International Conference on Electric Technology and Civil Engineering (ICETCE) Pub Date : 2011-04-22 DOI: 10.1109/ICETCE.2011.5774282

Hongsheng Jiang, Quan'an Ma

{"title":"Using GA-BP neural networks to analyze vertical bearing capacity of single rock-socketed pile","authors":"Hongsheng Jiang, Quan'an Ma","doi":"10.1109/ICETCE.2011.5774282","DOIUrl":"https://doi.org/10.1109/ICETCE.2011.5774282","url":null,"abstract":"With regard to the design of ultimate vertical bearing capacity of single rock-socketed pile, theoretical formula recommended by “Technical code for building foundations” (JGJ 94-2008)and static loading test are the two most popular methods. But results obtained from this two approaches have great differences. The average of relative difference (note: taking absolute value) is even up to 45.7%, and in most cases the values from the former are greater than that from the latter, as found from analyzing the static loading test data of 101 rock-socketed piles. By using founded GA-BP neural networks which taking 101 rock-socketed piles' static loading test data as a training sample, 10 predicted results have a good agreement with expected values from static loading tests. The average of relative difference is about 5%. GA-BP neural networks can also be used in analyzing the vertical bearing behaviors of rock-socketed pile. Using the GA-BP neural networks as mentioned above, varying the magnitude of ratio of rock-socketed depth to pile diameter, and keeping the rest of other parameters as unchanged constants, a curve of relationship between the variable ratio and output predicted vertical bearing capacity could be achieved, which revealed that for a given construction field and workmanship, a most reasonable value of the ratio could be found which corresponding to the maximum value of ultimate vertical bearing capacity, but no constant value has been found while changing the site condition.","PeriodicalId":6340,"journal":{"name":"2011 International Conference on Electric Technology and Civil Engineering (ICETCE)","volume":"20 1","pages":"2821-2824"},"PeriodicalIF":0.0,"publicationDate":"2011-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82713849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Intensify safety culture to ensure the safety of rail transit construction — Take the culture construction of Ningbo Rail Transit for example 强化安全文化保障轨道交通建设安全——以宁波市轨道交通文化建设为例

2011 International Conference on Electric Technology and Civil Engineering (ICETCE) Pub Date : 2011-04-22 DOI: 10.1109/ICETCE.2011.5775283

Cao Qian-qian, Zheng Rong-yue, Zhu Yao-hong, Lin Ping

引用次数: 0

Study on quality defect and relevant measures of external thermal insulation system and based on fault tree analysis 基于故障树分析的外保温系统质量缺陷及相关措施研究

2011 International Conference on Electric Technology and Civil Engineering (ICETCE) Pub Date : 2011-04-22 DOI: 10.1109/ICETCE.2011.5776202

Xiuqin Yin, Huiqiang Li, Mei Li

引用次数: 0

The determination of prestressed concrete covering layer system depth under atmosphere condition 大气条件下预应力混凝土覆盖层体系深度的确定

2011 International Conference on Electric Technology and Civil Engineering (ICETCE) Pub Date : 2011-04-22 DOI: 10.1109/ICETCE.2011.5775173

Feng Chen, D. Hu, Yili Sun

引用次数: 0

Experimental studies of full-scale self-centering beam-to-column exterior connection 全尺寸自定心梁柱外连接试验研究

2011 International Conference on Electric Technology and Civil Engineering (ICETCE) Pub Date : 2011-04-22 DOI: 10.1109/ICETCE.2011.5776413

P. Pan, Zhen-hua Pan, Haiyun Cao, F. Qiu, L. Ye

引用次数: 1

Public green space planning for equity using an accessibility-based GAP analysis 利用基于可达性的GAP分析进行公共绿地规划

2011 International Conference on Electric Technology and Civil Engineering (ICETCE) Pub Date : 2011-04-22 DOI: 10.1109/ICETCE.2011.5775449

Qing Chang, X. Li, Mengxi Li

引用次数: 2

Effect of cascade biological pretreatment of raw water with algae on conventional water treatment process 藻类级联生物预处理原水对常规水处理工艺的影响

2011 International Conference on Electric Technology and Civil Engineering (ICETCE) Pub Date : 2011-04-22 DOI: 10.1109/ICETCE.2011.5776517

G. Zhu, Chaowen Fan, Yue Zhou, Xiwu Lu

{"title":"Effect of cascade biological pretreatment of raw water with algae on conventional water treatment process","authors":"G. Zhu, Chaowen Fan, Yue Zhou, Xiwu Lu","doi":"10.1109/ICETCE.2011.5776517","DOIUrl":"https://doi.org/10.1109/ICETCE.2011.5776517","url":null,"abstract":"A cascade biological pretreatment reactor(CBPR) was used to improve the removal rates of ammonia, small molecule organic compounds and microcystins from eutrophic raw water. The pilot-scale installation was run continually based on the conventional water treatment process(CWTP) and the process combined with biological pretreatment(BPTP). The effluents of each reactor were analyzed. The results show that CBPR removes more than 75% of ammonia and helps to increase the DOC removal rate from 30.3% to 49.2% in the coagulation-sedimentation reactor. Compared with CWTP, the removal rates of extracellular microcystin-LR and total microcystin-LR are increased 47.4% and 43.1% in BPTP, respectively. The CBPR removes effectively small particles with diameter less than 5µm and increases big particles with diameter more than 7µm, which enhances the particles removal in coagulation-sedimentation and filtration reactors. The CBPR degrades effectively small molecular organic compounds, decomposes big molecular organic compounds into small ones and promotes the removal of medium molecular organic compounds by CWTP.","PeriodicalId":6340,"journal":{"name":"2011 International Conference on Electric Technology and Civil Engineering (ICETCE)","volume":"24 1","pages":"6549-6553"},"PeriodicalIF":0.0,"publicationDate":"2011-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82835126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Stability analyses of steel pipe in pipe-jacking and the optimization of wall thickness 顶管过程中钢管稳定性分析及壁厚优化

2011 International Conference on Electric Technology and Civil Engineering (ICETCE) Pub Date : 2011-04-22 DOI: 10.1109/ICETCE.2011.5775290

Zhifeng Zhao, Guangqiang Shao

{"title":"Stability analyses of steel pipe in pipe-jacking and the optimization of wall thickness","authors":"Zhifeng Zhao, Guangqiang Shao","doi":"10.1109/ICETCE.2011.5775290","DOIUrl":"https://doi.org/10.1109/ICETCE.2011.5775290","url":null,"abstract":"Pipe jacking is widely used in the underground construction, but few studies are focused on the pipe wall stability and no specify rule is presented in the codes. According to this situation, theoretical and numerical analysis is applied in research. Through numerical simulation, the inner force and deformation of steel pipe can be obtained, but the control criterion of wall thickness is still in lack. Based on the result of numerical analysis, the deformation of steel pipe is characteristic of arch, so the stability theory of arch in the material mechanics is lead to compute the critical pressure. Comparing the critical pressure with the actual force of steel pipe, the stability of pipe wall can be determined. The steel pipe of intake pipe design of a heat-engine plant is studied as project case, and the stability of pipe wall under different wall thickness is studied using the methods presented. The analysis and optimum design shows that the 22mm can be determined as the proper wall thickness instead of the original design thickness—34mm, and the project cost will be decreased significantly.","PeriodicalId":6340,"journal":{"name":"2011 International Conference on Electric Technology and Civil Engineering (ICETCE)","volume":"8 1","pages":"6178-6181"},"PeriodicalIF":0.0,"publicationDate":"2011-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82955065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on the BOTDR-based distributed detection of the pile foundation bearing capacity 基于botdr的桩基承载力分布式检测研究

2011 International Conference on Electric Technology and Civil Engineering (ICETCE) Pub Date : 2011-04-22 DOI: 10.1109/ICETCE.2011.5774766

C. Piao, G. Wei, Yong Chen

引用次数: 1