How to Determine the Anchoring Depth of Exterior Wall GRC Components?

GRC anchoring depth calculation must comprehensively consider wind loads, self-weight, seismic action, and substrate strength. The anchoring depth is typically 1.5-2 times the panel thickness and no less than 50mm. Qinglong Company achieves precise calculation through parametric design.

Wind load is the primary controlling factor. The local wind pressure with a 50-year return period is calculated according to the Load Code for the Design of Building Structures, and the pull-out force is determined based on component dimensions. In the Hainan Changying Global 100 project, the safety factor was raised to 2.5 for the typhoon zone, with the anchoring depth increased to 2.2 times the panel thickness.

Back-bolt connections are preferred for the anchoring system. The embedded depth of stainless steel undercut anchors must reach 25 times the bolt rod diameter and be verified through pull-out tests. Test data from the Shenzhen Xiangshan Science and Technology Park shows that this anchoring system achieves a pull-out resistance of 35kN, three times the theoretical value.

Dynamic loads require special consideration. For airport and station projects with frequent vibration, damping gaskets are used to absorb kinetic energy. Monitoring of the Shanghai Hongqiao Transportation Hub project shows that this design can reduce dynamic stress at anchoring points by 60%.