Determination Method and Treatment Structure of Padding Layer Thickness of Piping System in Subgrade

Abstract

The present invention relates to a method and a processing structure for determining the thickness of a cushion layer in a pipeline system in a subgrade. The steps of the determination method are as follows: 1) checking whether the bearing capacity of the soil layer on the bottom surface of the foundation meets the design requirements, so as to determine whether replacement of the cushion layer is required; 2) If it is necessary to replace the cushion layer, the thickness of the cushion layer shall be determined according to the foundation bearing capacity of the soil layer at the bottom of the cushion layer: 2-1) Determine the foundation type of the water supply and drainage pipes and inspection wells. type determination p z The expression of ; 2‑2) According to f z ,p cz ,p z relationship to determine the thickness of the padding layer; f z (kPa) is the characteristic value of the bearing capacity of the soil layer at the bottom of the pad; p cz (kPa) is the self-weight stress of the soil at the bottom of the pad; p z (kPa) is the additional stress of the soil at the bottom of the pad. The pipeline system constructed according to the method of the invention not only has sufficient foundation bearing capacity when there is a weak underlying layer, but also can avoid waste of manpower and material resources.

Description

technical field [0001] The invention relates to a method for determining the thickness of the cushioning layer of the pipeline system in the roadbed, and also relates to a treatment structure for the pipeline system in the roadbed. The invention belongs to the technical fields of municipal roads, municipal water supply and drainage, and soft soil roadbed treatment. Background technique [0002] The construction of urban water supply and drainage projects is the key content of urban construction. At this stage, the main purpose of urban water supply and drainage projects is to provide a cleaner and more comfortable environment for the production and life of urban residents. The construction of urban water supply and drainage projects is an important link in the construction of urban ecological civilization, which helps to maintain the urban ecological civilization and lays a good foundation for the coordinated and sustainable development of urban economic construction and eco...

AI Technical Summary

Problems solved by technology

[0007] The disadvantage is that the above-mentioned value of the required value of the bearing capacity of the soil layer at the bottom of the urban water supply and drainage pipes does not have sufficient basis for determination, and there is no sufficient basis for calculation of the thickness of the cushion layer in the actual design.

Therefore, the originally proposed 100kPa foundation bearing capacity requirement may not meet the actual needs

As for the water supply and drainage pipes, which do not directly bear external loads, the originally proposed 100kPa foundation bearing capacity requirement (for concrete pipes) may have a surplus. If the original 100kPa requirement is still used for construction, a certain degree of manpower, Waste of material resources, not economical

Images