A new method for calculating the combined anchor-concrete support of underground structures

Abstract

The problematic aspect of the underground structures construction in the urban area is the negative impact of construction on neighboring buildings and structures. To exclude emergency situations, it is required to control the interaction of the support of the underground structure and the surrounding soil mass by including additional regulatory elements, such as anchors, in the system. The article presents a new method for calculating the anchor-concrete support of underground structures and the results of monitoring of tensile forces in the bolting. It has been established that the tensile force has the highest constant value at the well mouth - jointing of the anchor rod, and then decrease exponentially.

Advanced ground freezing method and its applications in underground construction

“…The service cross passage between tunnels is located in water-bearing silts. As a lining, reinforced concrete blocks were use (for more information about modern support systems for transport tunnels, see [13,14]). For protecting construction works, the ground-ice wall was designed around this service tunnel.…”