@article{Wanchai Teparaksa_2016, title={DEEP BASEMENT EXCAVATION IN SOFT BANGKOK CLAY CLOSED TO PALACES}, volume={12}, url={https://geomatejournal.com/geomate/article/view/1230}, abstractNote={<p>The Bank of Thailand (BOT) head office is a large building constructed in the inner<br>Ratanakosin Island of Bangkok along Chao Phraya River, a main river of Bangkok, where high-rise building<br>construction with more than three stories is not permitted. The BOT building consists of five basements with<br>excavation depth of 15.8 meters and only three stories of super structure. The soil condition consists of 15 m.<br>thick soft to medium clay followed by stiff silty clay and sand layer. The basement construction was<br>constructed only five meters away from Tewavej Palace and ten meters away from Bangkhunphrom Palace.<br>The damage assessment by means of Finite Element Method (FEM) with simulation of basement<br>construction method was carried out to predict the influence on both palaces. Finally, the top-down<br>construction method was selected for basement construction with one meter thick and 20 meters long of<br>diaphragm wall which was designed together with the 50 meters long bored pile to support the whole<br>building. The full set of instrumentation was installed at the palaces, diaphragm wall and ground surface for<br>monitoring the field performances and effect to the palaces during and after basement construction. The field<br>measurement and FEM prediction is compared and the time dependent of lateral wall movement is discussed.<br>The construction was completed without any damage or effect to both palace.<br><br></p>}, number={33}, journal={GEOMATE Journal}, author={Wanchai Teparaksa}, year={2016}, month={Nov.}, pages={85–90} }