Large rectangular cross-section tunnel undercrossing urban road by micro pipe jacking and joint assembly structure (MPJ & JAS) method in soft soils

Since MPJ & JAS tunnel is a novel and special elemental structure, it is necessary to carry out FE analysis and bending test to study and verify the structure performance as well as to determine the physical characteristics, failure behavior and strength for design. Bending test Experimental design The specimen is a segment of MPJ […]

Mechanical behavior and waterproof performance of longitudinal section of tunnel segment joint gasket

Waterproof model of sealing gasket for segment joint The waterproof form of the tunnel segment joint gasket selected in this study is the type of separate arrangement of inside and outside, that is, two rubber gaskets are arranged separately on the upper and lower sides of the segment joint section, and the lower side of […]

Microstructure and pore structure of polymer-cement composite joint sealants

Basic properties of pore structures Pore size distribution of the polymer-cement composite joint sealants is closely associated with their macro-mechanical properties21, and with such durability indicators as anti-permeability and corrosion resistance. Based on the MIP results, this section analyzes the basic pore structure properties of the joint sealants by using the differential curves for pore […]