Evaluation of the impacts on existing elevated structure of the expressway due to sinking shafts in Bangkok MWA Project

Name: Tananat Yonjoho1

Organization : Geotechnical and Foundation Engineering Co., Ltd.

Name: Suntisuk Thongbaiyai

Organization : Geotechnical and Foundation Engineering Co., Ltd.

Name: Kangwan Kandavorawong

Organization : Rajamangala University of Technology Tawan-ok. Department of Civil Engineering Faculty of Engineering and Architectural, Uthentawai Campus

Name: Phatharaphong Yensri

Organization : Rajamangala University of Technology Tawan-ok. Department of Civil Engineering Faculty of Engineering and Architectural, Uthentawai Campus

Name: Phongkai Vonghirunyika

Organization : Rajamangala University of Technology Tawan-ok. Department of Civil Engineering Faculty of Engineering and Architectural, Uthentawai Campus

Name: Pornkasem Jongpradist

Organization : King Mongkut's University of Technology Thonburi. Faculty of Engineering

keyword: Impact assessment

LCSH: Shaft sinking

; Existing structures

; Instrumentation

Abstract: The construction of reinforced concrete shafts for launching and receiving the TBM of Metropolitan Waterworks Authority tunnels under contract number G-TN-9D involves the sinking process of two circular shafts, each 36.7 m deep, with an inner diameter of 12 and 10 m for shaft 9D-3 and shaft 9D-4, respectively. These shafts are situated in close proximity, approximately 12 m apart from the existing elevated structure of the Kanchanaphisek Expressway (Bang Phli-Suksawat). Consequently, the ground movements induced by the sinking process of both shafts can potentially damage the existing structure. Hence, as the existing structure is currently in operation, analyses of the impacts are essentially considered without compromising its functionality and serviceability. This paper presents the numerical simulation using the PLAXIS 3D software package, and the analysis results are discussed corresponding to the acceptable limits of the structure. Additionally, the establishment of the AAA level for the instrumentation program is described as a proactive measure to prevent risks or damage during the construction of both shafts in the project

King Mongkut's University of Technology North Bangkok. Central Library

Address: BANGKOK

Email: library@kmutnb.ac.th

Created: 2567

Modified: 2024-07-24

Issued: 2024-07-24

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BibliograpyCitation : ใน มหาวิทยาลัยธรรมศาสตร์ ศูนย์รังสิต. คณะวิศวกรรมศาสตร์. วิศวกรรมสถานแห่งประเทศไทย ในพระบรมราชูปถัมภ์. การประชุมวิชาการวิศวกรรมโยธาแห่งชาติ ครั้งที่ 29 : จากภูมิปัญญาที่สืบสานสู่การรังสรรค์โลกที่ยั่งยืน (NCCE 29) (GTE41). ปทุมธานี : มหาวิทยาลัยธรรมศาสตร์ ศูนย์รังสิต

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