Mixed type connection precast pre-stress concrete round storage bin structure

Abstract

A mixed type connection precast pre-stress concrete round storage bin structure comprises a bin bottom, and the bin bottom is provided with a bin wall which is provided with a bin top; the bin wall comprises a bin wall base body formed by precast arc-shaped wall plates; the precast arc-shaped wall plates are provided with a vertical pre-stress system; the bin wall base body is provided with an annular direction pre-stress system; the adjacent precast arc-shaped wall plates are connected through long bolts; anchoring platforms are arranged on the four precast arc-shaped wall plates located at the quartering positions of the bin wall; the annular direction pre-stress system comprises an annular direction pre-stress rib composed of four segments of pre-stress ribs; the four segments of pre-stress ribs are correspondingly arranged in the corresponding precast arc-shaped wall plates and encircle the bin wall base body; the two ends of each segment of pre-stress rib penetrate through the corresponding adjacent anchoring platforms, and the pre-stress ribs are tensioned through anchorage devices arranged on the corresponding adjacent anchoring platforms; the bin wall is connected with thebin bottom through common rebars; the bin wall is connected with the bin top through the vertical pre-stress system and concrete poured in the later period; and the advantages that stress is reasonable and anti-seismic performance is achieved are achieved.

Description

technical field [0001] The invention relates to the field of reinforced concrete storage bin structure and its design and construction, in particular to a hybrid connection prefabricated prestressed concrete circular storage bin structure. Background technique [0002] At present, the large-diameter and large-capacity silo structures in the field of silo structures are mainly concrete circular silo structures. The silo shell wall of this type of silo structure generally adopts a slip-form construction process; the silo roof structure generally adopts a full hall of scaffolding or other support forms, and the conical shell formwork of the silo top is erected, and concrete is poured on site to form an integral silo roof structure. The main problems of adopting the above-mentioned construction technology are: due to the lateral pressure of the super-heaped material in the warehouse wall structure, a large hoop tensile stress is generated inside the warehouse wall; Reasons such...

AI Technical Summary

Problems solved by technology

The main problems of adopting the above-mentioned construction technology are: due to the lateral pressure of the super-heaped material in the warehouse wall structure, a large hoop tensile stress is generated inside the warehouse wall; Reasons such as large temperature difference will form a large temperature stress on the warehouse wall. At the same time, for some storage materials, the waterproof and airtight requirements are high, and the crack width is strictly required. Therefore, in order to resist the above effects on the warehouse wall. effect, the warehouse wall needs to be designed with a larger cross-sectional size, and a large number of circumferential and vertical steel bars are configured according to the force requirements and structural requirements, which requires a large amount of concrete and steel; the construction process of the warehouse wall slipform requires a lot of professional labor And special machinery and equipment, the warehouse roof structure requires a lot of formwork and scaffolding

In addition to bearing the vertical load caused by its own weight and service load, the warehouse roof structure also bears and transmits the earthquake action, and the force is relatively complicated. In order to resist the effects of various actions, it is necessary to design a larger cross-section and configure more steel bars; During the construction of the warehouse roof structure, a large number of scaffolding, supports and formwork need to be erected, and the turnover efficiency is low, resulting in long construction period, high cost and material waste. When pouring large volumes of concrete, the heat of hydration of the cement is relatively large, which easily causes the structure to generate high temperature. When the deformation and temperature stress exceed the tensile limit value that the concrete can bear, cracks are easy to occur, which will have a negative impact on the airtightness and watertightness of the roof structure

Due to the huge demand for materials for the construction of concrete storage silos using traditional technologies, the waste of resources and energy and environmental pollution are common to a certain extent.

Due to a large number of on-site operations and wet operations, there is a huge demand for labor force. At the same time, the working environment is poor and the labor intensity is high. However, the supply of the new generation of labor force in the field of capital construction is insufficient, resulting in a sharp increase in project construction costs.

Images