检索结果-内蒙古大学图书馆

International Conference on Advanced engineering Materials and Architecture Science (ICAEMAS 2014)

作者： Lin Yizhou Xue Jianghong Tang Mingqiao Jinan Univ Dept Mech & Civil Engn Key Lab Disaster Forecast & Control Engn Minist Educ Guangzhou 510632 Guangdong Peoples R China

ISBN: (纸本)9783037859766

The buckle propagation phenomenon in offshore pipelines is an important subject of ocean engineering. The local buckling will easily propagate along the pipeline if the external hydrostatic pressure is high enough. The buckle propagation will seriously hinder the transmission of the oil. This paper focuses on the numerical calculation of buckle propagation pressure using ABAQUS software.

关键词： Finite-element Analysis Buckle Propagation Offshore Pipelines non-linear analysis

来源：评论

学校读者我要写书评

暂无评论

Time-dependent behaviour of interactive marine and terrestrial deposit clay

引用

GEOMECHANICS AND engineering 2014年第3期7卷 279-295页

作者： Chen, Xiaoping Luo, Qingzi Zhou, Qiujuan Jinan Univ Coll Sci & Engn MOE Key Lab Disaster Forecast & Control Engn Guangzhou 510632 Guangdong Peoples R China Guangdong Tech Coll Water Resources & Elect Engn Guangzhou 510635 Guangdong Peoples R China

A series of one-dimensional consolidation tests and triaxial creep tests were performed on Nansha clays, which are interactive marine and terrestrial deposits, to investigate their time-dependent behaviour. Based on experimental observations of oedometer tests, normally consolidated soils exhibit larger secondary compression than overconsolidated soils;the secondary consolidation coefficient (C-a) generally gets the maximum value as load approaches the preconsolidation pressure. The postsurcharge secondary consolidation coefficient (C-a') is significantly less than C-a. The observed secondary compression behaviour is consistent with the C-a/C-c concept, regardless of surcharging. The C-a/C-c ratio is a constant that is applicable to the recompression and compression ranges. Compared with the stage-loading test, the single-loading oedometer test can evaluate the entire process of secondary compression;C-a varies significantly with time and is larger than the C-a obtained from the stage-loading test. Based on experimental observations of triaxial creep tests, the creep for the drained state differs from the creep for the undrained state. The behaviour can be predicted by a characteristic relationship among axial strain rate, deviator stress level and time.

关键词： secondary consolidation coefficient creep time-dependent interactive marine and terrestrial deposit clay laboratory

来源：评论

学校读者我要写书评

暂无评论

Sensitivity analysis of continuous curved bridge under different curvature radius

Sensitivity analysis of continuous curved bridge under diffe...

引用

4th International Conference on Civil engineering, Architecture and Building Materials, CEABM 2014

作者： Luo, Mu-Xin Gao, Jing-Hong Department of Mechanics and Civil Engineering Jinan University Guangzhou 510632 China Key Laboratory of Disaster Forecast and Control in Engineering Ministry of Education of China Guangzhou 510632 China

ISBN: (纸本)9783038351672

In the condition of the same span, to change the continuous curved bridge's curvature radius and under the dead load and moving load to compare how the internal force changes in different curvature radius. The finite element model is established to simulate the actual structure by Midas Civil. Results in a continuous curved bridge which main span of less than 60m, under the dead load, bending moment(-y) is unlikely to change, reinforced by a straight bridge can meet the requirements;under the moving loads, the curvature radius of the bending moment (-y) has little influence, should focus on increase in torque and bending moment(-z). © (2014) Trans Tech Publications, Switzerland.

关键词： Sensitivity analysis

来源：评论

学校读者我要写书评

暂无评论

The changes of internal forces and the reliability of curved bridge taking the cross-sectional design of axial symmetrical

The changes of internal forces and the reliability of curved...

引用

4th International Conference on Civil engineering, Architecture and Building Materials, CEABM 2014

作者： Zhao, Zheng Jiu Gao, Jing Hong Department of Mechanics and Civil Engineering Jinan University Guangzhou 510632 China Key Laboratory of Disaster Forecast and Control in Engineering Ministry of Education of China Guangzhou 510632 China

ISBN: (纸本)9783038351672

Taking a bridge of 160m long variable cross-section prestressed continuous curved box-girder as the research object and analyzing the cross-sectional design of axis with axial symmetrical or axial non-symmetrical to research the structure forces change of the upper part of bridge in different curvature. In order to test and verify the variable cross-section of prestressed continuous curved box-girder bridge is safe and reliable via cross-sectional design with axial symmetrical instead of axial non-symtrical within a radius of curvature of the interval. Creating the straight bridge and curved bridge models with different radius of curvature in same span by Midas/Civil to compare their structure forces. © (2014) Trans Tech Publications, Switzerland.

关键词： Box girder bridges

来源：评论

学校读者我要写书评

暂无评论

Strong motion records of two suspension bridges in a M4.8 earthquake

Strong motion records of two suspension bridges in a M4.8 ea...

引用

2014 GeoShanghai International Congress: Advances in Soil Dynamics and Foundation engineering

作者： Wang, Lixin Jiang, Hui Zhao, Xianren Li, Xueyan CEA Key Laboratory of Earthquake Monitoring and Disaster Mitigation Technology Earthquake Administration of Guangdong Province Guangzhou 510070 China Key Laboratory of Disaster Forecast and Control in Engineering Department of Mechanics and Civil Engineering Jinan University Guangzhou 510632 China

ISBN: (纸本)9780784413425

Earthquake records of in-service, long-span bridges provide valuable insights into their seismic behavior and performance. In this paper, the strong motion records of arrays installed at two steel suspension bridges in a M4.8 earthquake are illustrated and preliminarily analyzed. The data reveal that the differences in the arrival times of peaks and valleys appear to be significant, which clearly illustrates the wave propagation effect. It is also shown that the differences in local soil conditions at different towers have significant influence on the spectra and time history of ground motions. The results suggest that the spatial variation of seismic ground motions induced by local site effect should receive more attention in seismic design and analysis of long-span bridges. © 2014 American Society of Civil Engineers.

关键词： Suspension bridges

来源：评论

学校读者我要写书评

暂无评论

Gas storage and emission in Qijiapo Mine

引用

Electronic Journal of Geotechnical engineering 2015年第14期20卷 6035-6040页

作者： Qi, Li-Ming Rong, Zhao Ge, Xu-Bin Key Lab of Mine Disaster Prevention and Control in Hebei Province Langfang Hebei China School of Safety Engineering North China Institute of Science and Technology Beijing China Graduate School North China Institute of Science and Technology Beijing China

Developing a law of gas storage and emission can provide guidance for gas control in mine. First, the author drew contour maps about gas content, gas pressure, absolute gas emission quantity and relative gas emission quantity by recorded statistical data of Qijiapo Mine. Then the author analyzed contour maps and data, working out the law as to gas storage and emission. The results show that the north has higher gas content, gas pressure, absolute gas emission quantity and relative gas emission quantity than the south in Qijiapo Mine. © 2015 ejge.

关键词： Gas emissions

来源：评论

学校读者我要写书评

暂无评论

Damage identification of the arch bridge based on the difference of deflection with moving load

Damage identification of the arch bridge based on the differ...

引用

4th International Conference on Civil engineering, Architecture and Building Materials, CEABM 2014

作者： Zhao, Zhan Nie, Zhen Hua Ma, Hong Wei College of Science and Engineering Jinan University Guang Zhou Guang Dong China The Key Laboratory of Disaster Forecast and Control in Engineering Ministry of Education of China Guangzhou Guangdong China

ISBN: (纸本)9783038351641

A newdamage identificationmethodfor arch bridge structures under a moving load based on the difference of deflection is presented. The function ofthe deflection atthe midspanof thearch with the changing positions of the moving load is derived using the Moore integralmethod. It can be concluded from the results that when the moving load is in the areawithout damage,this target indicates to be linear functions with the cosine of an angle(θ) between moving load and horizontal. Nevertheless, this target is multinomial with the change of cos θin the damage *** order to validate the proposed damage detection algorithm, a steel arch modal issimulated, which is proved to be practicable in *** results indicate that the location and degreeof single damage can be identified accurately. © (2014) Trans Tech Publications, Switzerland.

关键词： Arch bridges

来源：评论

学校读者我要写书评

暂无评论

Experimental study on secondary consolidation of soft dredger fill

引用

Tumu Gongcheng Xuebao/China Civil engineering Journal 2015年 48卷 257-261页

作者： Luo, Qingzi Wei, Xiaoyi Liu, Quanming Chen, Xiaoping College of Science and Engineering Jinan University Guangzhou510632 China Key Laboratory of Disaster Forecast and Control in Engineering Jinan University Guangzhou510632 China Guangxi University of Finance and Economics Nanning530003 China

A series of oedometer tests were carried out to investigate the secondary consolidation coefficient of soft dredger fill in the estuary of eastern Shantou. The test results show that the secondary consolidation coefficient decreases with the decrease of void rate or the growth of consolidation time. When certain lateral deformation is allowed, the secondary consolidation coefficient is higher, and preloading can eliminate part of the post-construction settlement. The secondary consolidation coefficient increases with the consolidation pressure. Once the consolidation pressure reaches the value of 2.3 times pc, the growth rate of secondary consolidation coefficient is very small, and the secondary consolidation coefficient is no longer dependent on consolidation load. The development trend of the secondary consolidation coefficient and compression index is consistent with different constraint and loading conditions, and a good linear relationship between them is found, where Cα/Cc≈0.028~0.049. ©, 2015, Editorial Office of China Civil engineering Journal. All right reserved.

关键词： Dredging

来源：评论

学校读者我要写书评

暂无评论

Interfacial behavior of pipe joints under torsion loads 7

Interfacial behavior of pipe joints under torsion loads

引用

7th International Conference on FRP Composites in Civil engineering, CICE 2014

作者： Han, Jun Yuan, Hong Wu, Jiayu MOE Key Lab of Disaster and Control in Engineering Institute of Applied Mechanics Jinan University Guangzhou510632 China

ISBN: (纸本)9781771363082

The mechanic behavior and debonding process of pipe joints are the key points for pipe system. Based on the latest research result of pipe joints, the interfacial behavior of pipe joints is studied in this paper. Firstly, through the nonlinear fracture mechanics, the analytical expressions of the interfacial shear stress and the load-displacement relationship at loaded end of pipe joints under torsion loads are obtained. Thus, the shear stress propagation and the debonding progress of the whole interface for different bond lengths could be predicted. Secondly, through the analytical solutions, the influences of different bond length on the load-displacement curve and the ultimate load are studied. The stress transfer mechanism, the interface crack propagation and the ductility behavior of the joints could be explained. On the basis of fully knowing the interfacial behavior of the pipe joints under torsion loads, the full-range characteristic and the crucial factors of interfacial debonding problem can be further understood.

关键词： Torsional stress

来源：评论

学校读者我要写书评

暂无评论

Dynamic compression failure mechanisms and dynamic effects of integrated woven sandwich composites

引用

JOURNAL OF COMPOSITE MATERIALS 2014年第4期48卷 427-438页

作者： Fan, Hualin Zhao, Long Chen, Hailong Zheng, Jingjing Jiang, Yifan Huang, Shiqing Kuang, Ning Ye, Chenxuan Hohai Univ Coll Mech & Mat Lab Struct Anal Def Engn & Equipment Nanjing Peoples R China PLA Univ Sci & Technol State Key Lab Disaster Prevent & Mitigat Explos & Hefei Peoples R China Tsinghua Univ State Key Lab Automot Safety & Energy Beijing Peoples R China Jinan Univ MOE Key Lab Disaster Forecast & Control Engn Guangzhou Peoples R China Sinoma Sci & Technol Co Ltd Nanjing Fiberglass Res & Design Inst Suzhou Peoples R China

Low-velocity dynamic compression tests were performed to reveal the failure mechanism and the energy absorption capacity of the integrated woven sandwich composite. Shear deformations were induced by the tilting of fiber piles in the core of the integrated woven sandwich composite. Ductile load-displacement curves are featured by a long deformation plateau originated from rotations of the core piles. Densification is apparent in the later stage of compression. Stout piles in the core also lead to plastic compression failure mode accompanying with much smaller rotations of core piles. controlled by the latter failure mode, the dynamic strength and the energy absorption of the panel are stronger. In dynamic compression experiments, the integrated woven sandwich composite panels exhibit similar failure modes with those observed in quasi-static compression tests. The dynamic strength is much greater and the corresponding deformation plateau is much more stable, which leads to greater energy absorption. The dynamic effects of the strength and the energy absorption were explained by the dynamic buckling of the woven struts in the core. The tests suggest that the integrated woven sandwich composite is ideal to serve as a lightweight anti-impact material in engineering structures.

关键词： Sandwich textile composites impact behavior stress strain curves

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：