Understanding and Thinking about "Technical Standard for Building Engineering against Uplift"

In view of some problems in the industrial standard "Technical standard for building engineering against uplift (JGJ 476—2019)", this paper presents understanding and thinking. For projects with anti-uplifting design grade A, this standard adds a lot of work content, among which the prediction of underground water level in the service period is a difficulty. The accumulation of basic data and the establishment of groundwater numerical analysis model are feasible approaches. It is not entirely appropriate for the standard to link the anti-uplifting design grade with the foundation design grade. In addition to the overall anti-uplifting stability checking calculation, the "unit anti-uplift stability checking calculation" for the weak parts of the underground structures should also be carried out, which should be considered in combination with the strength and deformation check of the floor. Under the condition of artesian water, the hydraulic head value of most areas of basement floor is the same as that of artesian water. The concept of cross section calculation formula of anti-uplifting bolt reinforcement is not clear. When adopting the active anti-uplifting method, the adaptability of stratum and environment should be fully considered. The problems of soil retention and clogging performance, seepage calculation of the drainage blind ditch and the durability of cutoff wall should be studied more deeply.