http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Fayun Liang (검색결과 5 건)
- 무료
- 기관 내 무료
- 유료
-
Fayun Liang,Hao Zhang,Ke Yang 대한토목학회 2015 KSCE JOURNAL OF CIVIL ENGINEERING Vol.19 No.1
Piles are frequently used to support lateral loads. Nonlinear p-y analysis is one of the most widely used methods to design laterallyloaded piles. However, nonlinear p-y analysis requires special computer programs to perform the analysis. In this paper, an alternativesolution based on a variational approach is presented to capture the behaviors of laterally loaded piles using Winkler beams on elastoplasticfoundation. The displacements of piles are represented by finite series, and no discretisation of the pile shaft is required. Therefore, the proposed nonlinear solution can be easily implemented using the general computational software such as MATLAB. To facilitate the use of the numerical solution, methods for determining the parameters of the model are provided. The validity of theproposed method is confirmed through comparisons with existing theoretical solutions. Case studies are also presented to show theapplication of the present method to laterally loaded piles in field. The simplicity and the relative ease of the solution makes theproposed method a good alternative approach to analyze the nonlinear response of laterally loaded piles.
-
Fayun Liang,Feng Yu,Jie Han 대한토목학회 2013 KSCE JOURNAL OF CIVIL ENGINEERING Vol.17 No.2
Based on the flexural differential equations of elastic piles and Winkler’s spring model of pile-soil interaction, the equations of axially loaded piles subjected to lateral soil movement were solved in this study. In the derivation, the flexural differential equations were established using a two-stage method and solved by the finite difference method. A method based on Mindlin’s solution was developed to analyze the shielding effect between piles, and this method was further applied to an axially loaded pile group with free heads or a pinned pile cap. A parametric study was conducted to investigate the influence of pile spacing, number, and location and magnitude of axial load. The results show that the axial load applied on piles or the pile cap affected the shielding effect and the response of the pile group subjected to lateral soil movement. The shielding effect depended on the pile spacing and number and the magnitude of axial loading.
-
A Modified Analysis Method for the Nonlinear Load Transfer Behaviour of Axially Loaded Piles
Jingpei Li,Yongwei Tan,Fayun Liang 대한토목학회 2012 KSCE Journal of Civil Engineering Vol.16 No.3
A modified analytical solution is proposed to calculate the load-settlement curve of axially loaded piles, which may consider the degradation of the skin friction of piles, distribution of shear strength along the pile shaft, and a combination of different stress states of the pile-soil system. The parameters for the calculation model can be obtained by means of equivalent analysis of the in-situ measured skin friction. The results of the presented approach are verified with data from the available literature. Compared with other approaches, this method can be applied to practical engineering more efficiently; therefore, it is feasible to perform nonlinear analysis for load transfer of axially loaded piles. Furthermore, it can also be used for layered soils.
-
Some Observations of the Influence Factors on the Response of Pile Groups
Qian-qing Zhang,Shi-min Zhang,Fayun Liang,Qian Zhang,Fei Xu 대한토목학회 2015 KSCE JOURNAL OF CIVIL ENGINEERING Vol.19 No.6
A simplified approach for nonlinear analysis of the load-displacement response of pile groups embedded in multilayered soils is presented in this work. A hyperbolic model is used to capture the relationship between unit skin friction and pile-soil relative displacement developed along the pile-soil interface and the stress-displacement relationship developed at the pile end. Considering interactive effect among piles, the parameters related to the hyperbolic model of an individual pile in a group can be computed. As to the analysis of the response of pile groups, a highly effective iterative computer program is developed using the hyperbolic model of an individual pile in a group. The efficiency and accuracy of the present method is verified using a well-documented field test. Furthermore, a parametric study is conducted to capture the influence of pile spacing and number of piles on the load-settlement response of the pile groups connected to a rigid cap. The pile-group settlement ratio and the pile-group resistance ratio are analyzed to assess the interaction effect among individual piles.
-
The Volume of Settlement Trough Change with Depth Caused by Tunneling in Sands
Fei Wang,Linchang Miao,Xiaoming Yang,Yan-Jun Du,Fayun Liang 대한토목학회 2016 KSCE JOURNAL OF CIVIL ENGINEERING Vol.20 No.7
The Volume of the settlement trough is essential for estimating the settlement caused by tunneling. Generally, the volume of the settlement trough was recognized as a constant which was equal to the volume of the ground loss in the tunnel buried in clay. According to observation data from both laboratory and field tests, the volume of the settlement trough caused by tunneling in sands changed with depth, although the mechanism behind the volume change has not yet to be understood. In the present study, a largescale laboratory model test was conducted to investigate the volume change of the settlement trough with depth caused by tunneling in sands. The results show that the volume of the settlement trough decreased significantly with a decrease in depth. Based on the data from both literature and the current study, a modified model was proposed to estimate the settlement caused by tunneling in sands considering variation of the volume of settlement trough with depth.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
