2011 International Conference on Remote Sensing, Environment and Transportation Engineering最新文献_第6页

Study on pile-soil relationship based on soil arching model 基于土拱模型的桩土关系研究

2011 International Conference on Remote Sensing, Environment and Transportation Engineering Pub Date : 2011-06-24 DOI: 10.1109/RSETE.2011.5965809

Xiong Xia, Liangliang Dong

{"title":"Study on pile-soil relationship based on soil arching model","authors":"Xiong Xia, Liangliang Dong","doi":"10.1109/RSETE.2011.5965809","DOIUrl":"https://doi.org/10.1109/RSETE.2011.5965809","url":null,"abstract":"A soil arching theory and a model was put up for the thrust's transfer mechanism and the part acting on the presstressed anti-sliding pile can be computed. Aiming at the existing problems in the method for computing anti-sliding pile with prestressed anchoring cable, an improved method is proposed in this paper. According to the actual construction process and mechanical condition of the pile and the prestressed anchoring cable, the internal force of the structure should be computed in two steps. Firstly, the pile under the prestress of the anchoring cable and a part of sliding thrust will be taken into account in computation. It should be pointed out that the subgrade reaction over the slip surface behind the pile should also be taken into consideration in the calculation of the prestress. Secondly, the pile under the computed sliding thrust should be calculated and the concerted deformation of the pile and the anchoring cable must be considered. A model test on the character of the internal force of prestressed anti-sliding pile is conducted, and the pile is calculated using the improved method and the existing method. The comparison between the computation results and the test results shows that the satisfying results can be obtained by the improved method.","PeriodicalId":6296,"journal":{"name":"2011 International Conference on Remote Sensing, Environment and Transportation Engineering","volume":"19 1","pages":"6349-6352"},"PeriodicalIF":0.0,"publicationDate":"2011-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78742287","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

Engineering property evaluation of soil before and after PHC pipe pile installation PHC管桩安装前后土体工程性质评价

2011 International Conference on Remote Sensing, Environment and Transportation Engineering Pub Date : 2011-06-24 DOI: 10.1109/RSETE.2011.5964490

Jun Ju, Zhi-bin Liu

{"title":"Engineering property evaluation of soil before and after PHC pipe pile installation","authors":"Jun Ju, Zhi-bin Liu","doi":"10.1109/RSETE.2011.5964490","DOIUrl":"https://doi.org/10.1109/RSETE.2011.5964490","url":null,"abstract":"Researchers at home and abroad are mainly focused on the bearing capacity, effects of soil plug and pile driving of PHC pipe piles. However, little attention is paid to property variation of soil before and after their installation especially when different installation technology is adopted. For further study of engineering property of PHC pipe pile composite foundation, the property variation of soils among PHC pile piles before and after their installation was studied with CPTU in-situ test technique in northern connection project of Chongqi Bridge expressway. The results indicate that, regardless of the pile installation, either hammer percussion method or static pressure method, several physical and mechanical parameters of soils among PHC piles were increased while both the consolidation coefficient and permeability coefficient of soft soil decreased one year after installation. For hammer percussion method, during the process of pile driving, soils around the pile accept a strong non-uniform drag effect, which makes the soil compacted in local area significantly. So the CPTU tip resistance of hammer percussion method is often significantly higher than that of static pressure method in local areas, which also leads to that the average deduced parameters of hammer percussion method such as the relative density and the effective internal friction angle of sand or undrained shear strength of cohesive soil are usually higher. Under the condition of same geology and design parameters, the skin friction of soils around pile in hammer percussion method is generally lower than that of static pressure method. This is of great significance for the PHC pipe pile which used as friction pile and for the bearing characteristic of PHC pipe pile composite foundation.","PeriodicalId":6296,"journal":{"name":"2011 International Conference on Remote Sensing, Environment and Transportation Engineering","volume":"11 1","pages":"1179-1182"},"PeriodicalIF":0.0,"publicationDate":"2011-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78771947","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

Non-piont source pollution and stormwater management practices of parking lot 停车场非点源污染及雨水管理实务

2011 International Conference on Remote Sensing, Environment and Transportation Engineering Pub Date : 2011-06-24 DOI: 10.1109/RSETE.2011.5964323

Jin-li Li, W. Che

引用次数: 1

Speciation analysis of arsenic in fruits and vegetables by high performance liquid chromatography-hydride generation-atomic fluorescence spectrometry with ultrasonic extraction 高效液相色谱-氢化物发生-原子荧光光谱法超声提取分析果蔬中砷的形态

2011 International Conference on Remote Sensing, Environment and Transportation Engineering Pub Date : 2011-06-24 DOI: 10.1109/RSETE.2011.5966002

S. Dai, Min Wang, Jing Qiu, Hui Yang, Fu-Hua Wang

{"title":"Speciation analysis of arsenic in fruits and vegetables by high performance liquid chromatography-hydride generation-atomic fluorescence spectrometry with ultrasonic extraction","authors":"S. Dai, Min Wang, Jing Qiu, Hui Yang, Fu-Hua Wang","doi":"10.1109/RSETE.2011.5966002","DOIUrl":"https://doi.org/10.1109/RSETE.2011.5966002","url":null,"abstract":"A method was developed for simultaneously determination of four arsenic speciation including trivalent arsenic (As (III)), pentavalent arsenic (As (V)), monomethylarsinic acid (MMA) and dimethylarsinic acid (DMA) in fruits and vegetables. Arsenic speciation in samples were extracted with methanol/water (50/50, v/v) after samples were dried at 105°C, and then detected by high performance liquid chromatography-hydride generation-atomic fluorescence spectrometry (HPLC-HG-AFS). The recoveries of four arsenic speciation were 81.7%∼103.9% with RSD of 0.88%∼5.03%, and detection limits were 0.8∼2.0 µg/kg. This indicates that the developed method has good accuracy and high sensitivity. The method was then applied to detect eleven types of fruits and vegetables samples randomly purchased from supermarkets. The analytical results showed that the main arsenic speciation were As (III) and As (V) in vegetables and As (III) in fruits. The concentrations of As (III) in vegetables were obviously higher than those in fruits.","PeriodicalId":6296,"journal":{"name":"2011 International Conference on Remote Sensing, Environment and Transportation Engineering","volume":"10 1","pages":"7105-7108"},"PeriodicalIF":0.0,"publicationDate":"2011-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78928481","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: 3

Ecological sensitivity analysis in Wuhan city based on RS and GIS 基于RS和GIS的武汉市生态敏感性分析

2011 International Conference on Remote Sensing, Environment and Transportation Engineering Pub Date : 2011-06-24 DOI: 10.1109/RSETE.2011.5964262

Chonghui Gao, Jun Zhang

引用次数: 0

Collision response analysis between deepwater semi-submersible platform and vessel 深水半潜式平台与船舶碰撞响应分析

2011 International Conference on Remote Sensing, Environment and Transportation Engineering Pub Date : 2011-06-24 DOI: 10.1109/RSETE.2011.5965677

J. Zeng, Gang Chen, H. Ren, Chenfeng Li, Hao Yu

引用次数: 2

High porosity lysozyme imprinted polymers 高孔隙度溶菌酶印迹聚合物

2011 International Conference on Remote Sensing, Environment and Transportation Engineering Pub Date : 2011-06-24 DOI: 10.1109/RSETE.2011.5964091

Zhenhe Chen, Bin Xue, Wentao Zhao, Linxia Zhang, Liquan Sun, Aiqin Luo

引用次数: 1

Accuracy analysis for classification of land use/land cover based on different imagine software 基于不同想象软件的土地利用/土地覆被分类精度分析

2011 International Conference on Remote Sensing, Environment and Transportation Engineering Pub Date : 2011-06-24 DOI: 10.1109/RSETE.2011.5964018

Xudong Sun, Bing Yang

引用次数: 0

Impact of the dynamic relation between lakes and rivers on water resource security in Jianghan Plain region of Hubei province 湖北江汉平原地区湖泊与河流动态关系对水资源安全的影响

2011 International Conference on Remote Sensing, Environment and Transportation Engineering Pub Date : 2011-06-24 DOI: 10.1109/RSETE.2011.5964514

Long Ning, Ping Chen, Xuelei Wang

引用次数: 0

Quantificational research on the slope development of loess tableland in the Holocene 全新世黄土塬坡发育的定量研究

2011 International Conference on Remote Sensing, Environment and Transportation Engineering Pub Date : 2011-06-24 DOI: 10.1109/RSETE.2011.5965028

Gang Liu, Pu-ling Liu, Qiong Zhang, Wennian Xu

{"title":"Quantificational research on the slope development of loess tableland in the Holocene","authors":"Gang Liu, Pu-ling Liu, Qiong Zhang, Wennian Xu","doi":"10.1109/RSETE.2011.5965028","DOIUrl":"https://doi.org/10.1109/RSETE.2011.5965028","url":null,"abstract":"It is important approach to recognize natural evolution of environment on the Chinese Loess Plateau that researches on evolution of loess landform and soil erosion in the Holocene. In this study, radiocarbon age of soil, loess deposition rate and magnetic susceptibility soil from YCT and YCS profiles which respectively located on loess tableland and an adjacent slope in Yanchang County in northern Shaanxi, were used to reconstruct the landform at about 12000 a B.P. on the slope. The results indicated that the average loess deposition rate of YCT profile in the Holocene was 0.0153 cm/a, and that of YCS profile was 0.0162cm/a during 12295∼20416 a B.P‥ The slope landform had formed before about 12000 a B.P., but its gradient was smaller than the modern slope. So the soil erosion rate greater than the loess deposition rate on the slope, which was the comprehensive result of natural erosion and artificial acceleration erosion. It was proved that this method could be used to quantificational research on loess landform and soil erosion in the geological period, and provided a new idea and method in this study area.","PeriodicalId":6296,"journal":{"name":"2011 International Conference on Remote Sensing, Environment and Transportation Engineering","volume":"92 9","pages":"3341-3344"},"PeriodicalIF":0.0,"publicationDate":"2011-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72616439","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