พฤติกรรมกำแพงกันดินไดอะแฟรมวอลล์สำหรับก่อสร้างชั้นใต้ดินเพื่อใช้เป็นที่จอดรถอัตโนมัติ

ไดอะแฟรมวอลล์, ดินเหนียวกรุงเทพ, การขุดดินลึก, ชั้นใต้ดิน, ที่จอดรถอัตโนมัติ

Abstract

Currently, there is a glowing demand for underground construction especially in Bangkok city center due to land price and limitation in building height by law. In most cases for Bangkok subsoil, the profile in the construction sites has no to little variation. However, in one of the most recent underground land development projects, True Digital Park Phase 2, variation in soil layer was encountered where sand and clay layer was found between -19.00 to -23.00 m at different boring logs. This paper presents 0.80 m. thick diaphragm wall behavior which is used for underground automatic car park construction with its tip located at different soil type. The underground consists of 4 storeys with 13.20 m. excavation depth with 3 layers of temporary bracing system. During construction movement of diaphragm wall was carefully monitored and compared with Finite Element Method (FEM) analysis results.