Test device for judging soil arch effect acting range of top face of underground structure, and test method of test device

• Main Authors: ZHANG TAO, YAO WANGJING, WENG HESEN, LYU RUNDONG, XU SIFA, CUI HANSHENG, QIU HANGYING, FU YAJUN, WU SHUWEI, CHEN ZHENHUAN, WANG ZHE, REN KANG
• Format: Patent
• Language: Chinese; English
• Published: 19.11.2019
• Subjects: EMBANKMENTS; EXCAVATIONS; FIXED CONSTRUCTIONS; FOUNDATIONS; HYDRAULIC ENGINEERING; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; SOIL SHIFTING; TESTING; UNDERGROUND OR UNDERWATER STRUCTURES

The invention discloses a test device for judging the soil arch effect acting range of the top face of an underground structure, and a test method of the test device. The test device comprises a modelbox which is hollow internally, and a vertical load-bearing body arranged in the model box; the internal space of the vertical load-bearing body is evenly partitioned by n-1 partition plates to formn partition chambers; each partition chamber is provided with a pull-rod-type piston matched with the partition chamber, each pull-rod-type piston is constituted by a piston body and a pull rod, the pull rods sequentially penetrate through the vertical load-bearing body and the model box, load devices are arranged at the lower ends of the pull rods, and each load device comprises a load-bearing steel plate and a hydraulic servo jack; the pull rods are in planar contact with the load-bearing steel plate; a hole is formed in the bottom of each partition chamber; and the holes are externally connected with transparent wat