... the reactivation of these landslides. This study explores the reactivation mechanisms of ancient landslides triggered by construction excavation disturbances combined with rainfall infiltration, a topic rarely examined in mountainous plateau regions. Through extensive monitoring of both surface and deep...

...Nan Wu; Yehui Shi; Peipei Chen; Jie Shan; Pingbao Xu The aim of this paper is to investigate the ground settlement caused by two symmetrical deep excavations in soft soils. The ground settlements under excavation procedures and distances were investigated using the finite-element method...

... of the ground surface is primarily 5–20 mm, and the lateral deformation of the soldier pile is mainly 5–15 mm; an average lateral shift of the support pile and vertical settlement of the ground surface is 0.061%H (excavation depth of the foundation pit), and the surface settlement is approximately 0.98...

...Brian Sheil; Zhandos Orazalin; Ganga Prakhya; Barbara Rossi This paper describes the design, contruction and monitoring of a complex urban excavation in stiff Oxford Clay. The project was novel for its complex curved basement excavation in stiff UK soil and the use of the observational method...

... suggested for dewatering in fractured rocks with those developed for excavations in soils is presented. To fit the construction dewatering systems in rock, a modification is proposed for the drawdown diagram that is widely used in practice for soils, and for the limited available general recommendations...

... with shaft excavation. This paper reviews empirical expressions available in the literature in the context of a large database of settlements induced by shaft excavation in London. A comprehensive set of detailed numerical analyses is performed to enable the development of a new set of expressions capable...

... adjacent to buildings, structures and pipelines has been increasing. When ensuring the safety of construction and surrounding facilities, it is essential to predict deformation caused by foundation pit excavations. In this study, a simple calculation method is proposed for predicting the deformation...

...Xiao Bing Xu, PhD; Yi Huai Liang, MEng; Qi Hu, PhD; Hong Liang Yao, MEng; Wen Ming Shen, PhD An innovative design of assembled H-shaped steel struts (AHSS) with servo system is introduced for the deep excavation of a T-shaped subway interchange station in soft soil. Analysis of the field monitored...

...-speed railway (HSR), which operates at 300 km/h. With a maximum excavation depth of 25.5 m and a minimum distance of only 10.6 m between the outer edge of the pit and the subgrade slope foot, controlling the deformation of the foundation pit in soft soil and ensuring safe operation of the adjacent HSR...

... was undertaken 5 m outside the excavation contour of the upper half-section of the tunnel, 3 m outside the excavation contour of the lower half-section and the tunnel face. The vertical range of the grouting reinforcement was adjusted according to the rock surface position of the weakly weathered layer. Long...

...Xiao Bing Xu, PhD; Yu Ying, BEng; Qi Hu, PhD; Yun Chen, PhD; Hua Jian Fang, MEng; Hai Di Zhu, BEng; Min Yun Hu, PhD The design of a large excavation using a braced wall system (BWS) with H-shaped steel (HS) struts is introduced. In situ axial loading tests were conducted to study the load transfer...

...Long Wang, PhD; Meijuan Xu, PhD; Jie Li, PhD; Enquan Zhou, PhD; You Gao, PhD Stability assessments and design of stepped excavation slopes are of great practical significance and require explicit consideration of the three-dimensional (3D) effect and suction-related effects. In the realm of 3D...

...Yang Sun; Zhenxue Gu; Zhenyang Xu; Chongxiao Wang; Dewei Song A 1257 m long special-shaped deep excavation was performed in the city centre of Nanjing, China. Full-width and half-width top-down construction methods were adopted. Based on long-term monitoring data from the project, the evolution...

... was assumed for both the sand and clay. Figure 3. (a) Plan view of site layout showing locations of boreholes (BH401–BH404) and CPTs; (b) site stratigraphy determined from boreholes To ensure effective dewatering of the excavation during construction, sheet piles were first driven to a depth...

...-section tunnel construction in fractured carbonaceous slate was conducted. Xingzishan tunnel, China, was first excavated using the three-step reserved core soil excavation method (TRCSEM); however, this resulted in serious rockfalls at the tunnel arch and local collapse. To enhance the stability...

... span of 30.1 m, a minimum interval of only 1.05 m and a single excavation face; the existing construction method cannot meet the demand. Based on these features, this paper proposes a reverse expanding excavation method and a stepwise controlled blasting excavation method. By numerical calculation...

... for the excavation, since this would have a critical influence on the space available for car parking. Associated with this was the need to develop an appropriate construction strategy. Figure 5 shows a cross-section through the east wall, which was used to develop an understanding of the constraints...

... sinking. This forms an annular void encircling the caisson which is filled with a support fluid to maintain excavation stability. The primary aim of this paper is to explore the influence of the cutting shoe geometry on the resulting vertical bearing resistance in sand. Finite-element limit analysis...

...Mauricio Ehrlich; Cauê Antônio Barreto da Rosa; Seyed Hamed Mirmoradi This study numerically evaluates the influence of excavation execution procedures in combination with the nail stiffness, facing stiffness and inclination, surcharge width and position and excavation near to the bottom...

...Evangelia S. Ieronymaki, PhD; James D. Maniscalco, MSc; Gonzalo Corral, ScD This paper presents the case study of the staged excavation for the New York University College of Nursing building in Manhattan, NY, supported by corner-braced secant pile walls. A commercial finite-element software...