| Rubber dam is to use the anchoring member fixed dam bags tape to the bottom and sides dam wall (pier), inflate the dam bags with water or air, form a sealed body bag, constitute an increase or decrease the discharge of the hydraulic retaining structures, With low cost, short construction period, management convenience, low cost, excellent seismic performance advantages, has been widely used in water conservancy, hydropower, water, municipal and other fields.Water filling rubber dam bags (gas), the dam through the anchorage system will deliver bags of water pressure on dam stability in the end board bags. Therefore, the anchor is directly related to dam safety bag, the rubber dam project can play a stabilizing role in retaining the key parts. Dam Bag bolt anchor plate type, as has the construction and installation is simple, easy maintenance, demolition, construction quality and easy to control the design advantages of a rubber dam in the preferred anchor anchor type. This paper presents a dual-anchor bar connecting the lower plate and the dam floor, with high strength bolts connecting the top plate and the plate of the type anchor bolt plate, and through the traditional anchor types and anchoring the new type of working conditions in different water retaining dam Comparison of calculation and application of finite element analysis software ANSYS to simulate the old and new patterns in the 5m height of anchor plate rubber dam under normal use stress and strain, showing that this new type of anchor bolt plate, particularly in the rubber dam running high dam safety, reliability and overall economy has greatly improved.Sufficient drainage system is an important part of the rubber dam. In the case of using the same pipe, under the full layout of the drainage system, Adjustment charge the pipe diameter of main channel and branch pipe to change the head loss, calculated the same flow same pressure system make each drainage hole has the same water. Prevent any flow of each outlet pressure ranging from the vibration caused by dam water bag, causing vibrate the dam bags. Each dam bag arrangement 4 outlet can effectively prevent the dam when the dam collapse due to poor drainage bag dam bags at the top of rugged, waterproof and so on. The original layout forms the abutment is inclined and pillow-style has their advantages and disadvantages. Through the plug type and slope anchored abutment layout analysis, will be a combination of both, play their own advantages to recommend a new abutment layout - hybrid abutment layout. Thickening of the dam pressure inside the bag, for the rise of dam, by the inner end of the dam bags pressure than is conducive to raise dam side, greatly improve the collapse shoulder, and enhanced over-current capacity without wrinkles in the dam bag. Phi-side slope in the dam within the Department in accordance with the corresponding pressure, light bags dam design parameters, using non-parallel to the anchor line layout dam bags, more conducive to raise dam, dam collapse, more economical and reasonable. The above technical improvement for the dam's abutment arrangement provides a new way of thinking. |
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