Up-down separate excavation type construction method for underground channel transversely penetrating through lower part of upper building pile foundation

• Main Authors: WANG SHUWEN, LIU NIANWU, HUANG XU, HU WEI, NA MINGWANG, PAN PENGFEI, NI ZHIPENG, WANG JUNQI, LIN QIANG
• Format: Patent
• Language: Chinese; English
• Published: 28.12.2021
• Subjects: EMBANKMENTS; EXCAVATIONS; FIXED CONSTRUCTIONS; FOUNDATIONS; HYDRAULIC ENGINEERING; SOIL SHIFTING; UNDERGROUND OR UNDERWATER STRUCTURES

The invention discloses an up-down separate excavation type construction method for an underground channel transversely penetrating through the lower part of an upper building pile foundation. The up-down separate excavation type construction method comprises the steps that a working well is built; the whole section is dug to the position with the distance D away from a first row of pile foundations of an upper building to form a first-section blank channel, and a first-section blank channel part channel protection wall frame is poured in the first-section blank channel; on the premise that a soil body on the lower part of the first row of pile foundations is reserved, excavation continues to be carried out to the position with the distance D from a second row of pile foundations of the upper building, so that a second-section blank channel and the upper half part of the first row of pile foundation blank channel are formed; and the upper half part of a pouring pile foundation underpinning structure and a sec