Steel trestle on top of shallow-buried tunnel in underneath crossing highway section and safety guarantee construction method

• Main Authors: WANG WEI, CHENG YI, LI SHUNXING, LUO GONGGUI, LAN LINGLING, LEE KUNCHAN, ZHOU XIN, LIU ZHIWEI, LIAO KEYI, XU HAIBIN, XIE JINZE, GAO XUESHAN
• Format: Patent
• Language: Chinese; English
• Published: 19.04.2024
• Subjects: ASSEMBLY OF BRIDGES; CONSTRUCTION OF BRIDGES; CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES; CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, ORTHE LIKE; EMBANKMENTS; EXCAVATIONS; FIXED CONSTRUCTIONS; FOUNDATIONS; HYDRAULIC ENGINEERING; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR; OR VIADUCTS; SOIL SHIFTING; UNDERGROUND OR UNDERWATER STRUCTURES

The invention provides a steel trestle on the top of a shallow-buried tunnel of an underpass road section and a safety guarantee construction method. A pit is dug in an original road surface area of a road to place a sunken trestle, a bridge floor is embedded into a road body and is flush with an existing road surface, the trestle is used for dispersing road loads, and then tunnel construction is conducted below the road. According to the method, the stability of a soil layer slope body of a highway and a near-edge limestone collapse accumulation body is guaranteed by adopting a sunken separated trestle load dispersion technology and a steel pipe pile slope reinforcement technology, and monitoring points are arranged on an upward slope, landmarks at near-edge positions of a house and a mountain body at the position of the house respectively by utilizing a matched monitoring technology to monitor the displacement and elevation change of the highway. Therefore, safe and rapid construction of the underneath pass