Pile Foundation Design by Chinese Standard of Thai-China High-Speed Rail Project Construction Phase 1 (Bangkok – Nakhon Ratchasima) Contract 4-3: Civil Works (Navanakorn – Ban Po)

Abstract

This paper presents the design of a pile foundation according to Chinese standards for Thai-China high-speed rail projects with 4-3 contracts from Navanakorn to Ban Po. The bearing capacity of the pile foundation was designed according to the code of TB10002-2017 Code for Design on Railway Bridge and Culvert and TB10093-2017 Code for Design Subsoil and Foundation for Railway Bridge and Culvert, which are the specified standards for railway structure of China. The design process uses the result of soil investigation in the project area including the load analysis with the Thai standard of wind force analysis and the seismic force analysis prescribed by the Thai ministry to combine with the load analysis of the structure and safely transferred it to the pile foundation. This study shows differences in the design of the bearing capacity of the pile foundation, compared with the standard method commonly used in Thailand for the same diameter and length of the pile. Finally, the result in the bearing capacity of pile foundation design has a difference due to the two main suffixes of the main equation analysis and the use of the factor of safety value.