LU Zhongxiang¹, SHOU Lingchao², Rini Asnida Abdullah¹, Muhammad Irfan Bin Shahrin¹, CHEN Yintao¹, SHAO Xin³, FAN Wenju⁴, Amber Islam¹, ZHANG Hengxu⁵

Revista Internacional de Métodos Numéricos para Cálculo y Diseño en Ingeniería, Vol.40, No.1, pp. 1-8, 2024, DOI:10.23967/j.rimni.2024.03.003 - 25 March 2024

Abstract This study utilizes ABAQUS finite element software to analyze embankment deformation during shield tunneling. Results reveal that shield tunneling effects are manageable.The left tunnel line successfully tunnels beneath the embankment, causing a maximum settlement of 8.7 mm, meeting regulations. The ground surface exhibits a "V"-shaped lateral settlement trough, approximately five times the tunnel centerline width. Conversely, the right tunnel line induces a more extensive impact, with a 12.2 mm maximum settlement.Different lateral settlement patterns emerge in soil at varying depths. The left tunnel creates a "V" shape, with slightly increasing settlement above the tunnel axis More >

Baojun Qin¹, Guangwei Zhang¹, Wei Zhang^2,*

Structural Durability & Health Monitoring, Vol.18, No.3, pp. 341-360, 2024, DOI:10.32604/sdhm.2024.047405 - 15 May 2024

Abstract This study delves into the effects of shield tunneling in complex coastal strata, focusing on how this construction method impacts surface settlement, the mechanical properties of adjacent rock, and the deformation of tunnel segments. It investigates the impact of shield construction on surface settlement, mechanical characteristics of nearby rock, and segment deformation in complex coastal strata susceptible to construction disturbances. Utilizing the Fuzhou Binhai express line as a case study, we developed a comprehensive numerical model using the ABAQUS finite element software. The model incorporates factors such as face force, grouting pressure, jack force, and… More >

Gang Niu^1,2, Guangwei Zhang¹, Zhaoyang Jin¹, Wei Zhang^3,*, Xiang Liu³

Structural Durability & Health Monitoring, Vol.18, No.1, pp. 55-71, 2024, DOI:10.32604/sdhm.2023.044832 - 11 January 2024

Abstract In the realm of subway shield tunnel operations, the impact of tunnel settlement on the operational performance of subway vehicles is a crucial concern. This study introduces an advanced analytical model to investigate rail geometric deformations caused by settlement within a vehicle-track-tunnel coupled system. The model integrates the geometric deformations of the track, attributed to settlement, as track irregularities. A novel “cyclic model” algorithm was employed to enhance computational efficiency without compromising on precision, a claim that was rigorously validated. The model’s capability extends to analyzing the time-history responses of vehicles traversing settlement-affected areas. The More >

Yan Zhang¹, Jichao Zhang¹, Xinxing Xu²

Revista Internacional de Métodos Numéricos para Cálculo y Diseño en Ingeniería, Vol.39, No.2, pp. 1-6, 2023, DOI:10.23967/j.rimni.2023.05.007 - 09 June 2023

Abstract In this paper, an analytical solution is developed to investigate soil consolidation around a pile under earthquake loading. The solution is validated using finite element method. The influence of various parameters on excess pore water pressure is analyzed. The results show that excess pore water pressure increases with depth and is positively correlated with n and N_eq / N₁ , while negatively correlated with η , χ , k_v , and t_d . The values of η , χ , k_v , N_eq / N₁ , and t_d affect excess pore water pressure during and after the earthquake, while… More >

Zhirong Xiao¹, Hanyang Zhou², Jiancheng Wang¹

Revista Internacional de Métodos Numéricos para Cálculo y Diseño en Ingeniería, Vol.39, No.4, pp. 1-6, 2023, DOI:10.23967/j.rimni.2023.10.002 - 17 October 2023

Abstract The transverse deformation of the tunnel under various loads is unavoidable with the long- term operation of the subway, and the problem of uneven settlement is gradually highlighted. A three-dimensional of tunnel lining model is established in ABAQUS to simulate the uneven settlement and transverse deformation on the safety performance, in which the deformation, internal force, and damage are further analyzed. Based on the simulation, safe settlement values for the shield tunnel with different level of existing transverse deformations (L) are suggested. Because the internal force and damage are not only related to the settlement More >

Xiushao Zhao¹, Jianglong Rao¹, Qijing Yang^1,2,*, Yu Rong³, Zhitao Fu¹, Zhiyao Wang¹, Zixi Chen¹

Journal of Renewable Materials, Vol.10, No.5, pp. 1287-1305, 2022, DOI:10.32604/jrm.2022.017473 - 22 December 2021

Abstract Completely weathered phyllite (CWP) has the characteristics of difficult compaction, low shear strength after compaction and large settlement after construction. The traditional improvement method using a single agent of red clay or cement for CWP satisfies the subgrade requirements for ordinary railway, but cannot meet the requirements of immediate strength and long-term post-construction settlement of high-speed railway at the same time. A series of experimental investigations were undertaken for the blended CWP soils, with three additives used. The first additive was red clay, the second was cement and the third was a combination of both… More > Graphic Abstract

Siddesha H¹, Manjunath N Hegde²

Structural Durability & Health Monitoring, Vol.11, No.1, pp. 17-41, 2017, DOI:10.3970/sdhm.2017.012.017

Abstract This paper describes the damage detection in framed structures due to the vertical support settlement and rotation of footing bases. The damage detection procedure proposed by Nobahari and Seyedpoor (2013) is used to detect the damage in the members of the frame. In the present study, instead of using the flexibility matrix (referred here as original flexibility matrix) method, the generalized flexibility matrix is used in the same algorithm and the results are compared. The algorithm uses flexibility matrix and strain energy concept to detect the damage in the members. The behaviour of the frame More >

D.M. Zhang^1,2, L.X. Ma^1,2, H.W. Huang^1,2, J. Zhang^1,2

CMES-Computer Modeling in Engineering & Sciences, Vol.89, No.3, pp. 163-188, 2012, DOI:10.3970/cmes.2012.089.163

Abstract This paper suggests a new set of analytical solutions for predicting leakage-induced seepage field and ground settlement in saturated clay. A unique feature of the solutions presented is considering the effect of the tunnel lining through the relative permeability between the tunnel and the soil. Through the superposition method, the proposed method can be easily extended to twin parallel tunnels. The accuracy of the analytical solutions are verified with numerical simulations. Parametric studies reveal that the decrease of pore pressure and the consequent settlements of ground and tunnel is proportional to the relative permeability. Over… More >

Renpeng Chen

The International Conference on Computational & Experimental Engineering and Sciences, Vol.20, No.4, pp. 101-102, 2011, DOI:10.3970/icces.2011.020.101

Abstract In China, high-speed transportation infrastructure, including high-speed railways and highways, develops rapidly in recent years. The standard for post-construction settlement of the high-speed transportation infrastructure is restrict with the considerations of safety and comfort. Piled embankments are widely used over the deep soft deposits. The piles that support the embankment are exposed not only to the heavy loading from the embankment self-weight, but also to the cyclic loading induced by high-speed vehicles through their service time.

In present work, the model tests on soil arching were performed and a method for anticipating the loads carried… More >