Supporting-arm-free working radial gate device of spillway and construction method

Abstract

The invention discloses a supporting-arm-free working radial gate device of a spillway. The device comprises a radial gate and gate bodies located on the two transverse sides of the radial gate; the inner walls of the two sides of each gate body are each provided with a sliding rail and an opening and closing and control device; the two sides of radial gate are each provided with a guide wheel matched with the corresponding sliding rail; the two sides of radial gate are each provided with a guide rail; and transmission gears of the opening, closing and control devices are matched with the guide rails so as to drive the radial gate to ascend or descend along the inner walls of the gate bodies. The supporting-arm-free working radial gate device of the spillway is simple in structure and convenient to install and maintain, the structure is greatly simplified after a supporting arm is omitted, the mounting and maintenance workload is small, and operation is convenient; and after a bracket of a spillway gate pier is removed, the structure is simple, the construction procedures are reduced, and the construction difficulty is lowered.

Description

technical field [0001] The invention relates to the construction field of a spillway of a hydropower station, in particular to an armless working arc door device and a construction method for a spillway. Background technique [0002] At present, the traditional structure and construction technology of the working arc gate of the spillway of the hydropower station is as follows: the first-stage reinforced concrete construction of the gate pier is carried out layer by layer, and the gate rail, support arm foundation, and hoist cylinder embedded parts are reserved for the second-stage concrete, and then the gate is constructed. Rail, support arm foundation plate, hoist cylinder and other embedded parts are installed, followed by the second phase concrete construction of the aforementioned equipment, and finally the door leaf, support arm and oil cylinder are installed. The traditional construction method, especially the concrete construction process of the arc door support arm ...

AI Technical Summary

Problems solved by technology

[0003] 1. Scaffolding needs to be erected, and the investment in manpower and material resources is large: In the reinforced concrete construction of the first phase of the gate pier, although the diversion pier where the arc door slot is located can be constructed by sliding form, the foundation concrete where the arc gate support arm is located Due to the protruding shape and complex structure of the (corbel) part, it is impossible to use the sliding form and other forming techniques for construction, and scaffolding must be erected, which requires a large investment in human resources and material resources, which increases the project cost.

[0004] 2. There are many construction procedures, the construction speed is limited, and the project cost is high: the first phase of gate pier reinforced concrete, arc door rail, support arm foundation, hoist cylinder embedded parts and the second phase of concrete construction, the concrete formwork needs to be molded many times , pouring, demolition, many cross-working surfaces, frequent alternation of construction procedures, construction efficiency cannot be effectively improved, and construction time is long, resulting in a significant increase in construction costs

[0005] 3. Concrete is constructed layer by layer, and the construction quality control is difficult: although the diversion pier where the arc door groove is located can be constructed by sliding form, the concrete (corbel) part of the arc door support can only use traditional construction techniques. No matter whether the mold is inverted or the formwork is used, the concrete construction process and project quality cannot be controlled very intuitively; during the implementation process, the requirements for uniform storage, compact vibration, watering and maintenance are high, and construction joints may occur if you do not pay attention , the quality is difficult to effectively control; at the same time, after the concrete pouring is completed, it needs to be strengthened before demoulding. During the construction process, construction defects cannot be found at any time and dealt with in time, and the construction quality control is difficult.

[0006] 4. The construction procedures are complicated, and the safety risks of high-altitude and lifting operations are high: due to the large overflow flow of the spillway, the height of the pier is generally high, and the erection and dismantling of scaffolding, the installation of steel bars, the installation of arc door rails and arms, and the erection of concrete Frequent construction, formwork removal, etc., frequent high-altitude operations and lifting operations, and the lifting equipment needs to be occupied for a long time when the arc door support arm is installed and corrected, the safety protection and safety management are complicated, and the safety risk is high

Images