What is the function of expansion joints?
In fact, most people may be relatively unfamiliar with the function of this expansion joint . It can be said that this term is also a technical term, which is usually only met when you build a house. The following Xiao Bian will tell you about what the expansion joints are and what are the requirements for expansion joints. What is the function of expansion joints ? Expansion joints are called temperature seams. It can be said that this is one of the common terms used in construction projects. As for the function of expansion joints, it is to prevent cracks in houses due to climate change. The practice is: You can reserve gaps along the length of the building at regular intervals so that the building can be completely disconnected from the above-ground components such as roofs, walls, floors, etc., and the building foundation is buried underground. The effect of temperature changes is small and there is no need to disconnect. It should be noted that the expansion joint is also of a certain size. As for the width of the expansion joint, it is generally 2 to 3 cm. The insulation material is filled in the joints. The spacing of the two expansion joints is specified in the specifications of the building structure. If the building's plane size is too long, it may be subject to thermal expansion and contraction, which may lead to excessive temperature stress in the structure. At this time, you need to set a certain length of the structure to divide the building into parts. The seam is a temperature seam. For different structural systems, the distance between expansion joints is different. China's current specification "Specifications for Design of Concrete Structures" GB50010-2002 has specific provisions for this. What are the requirements for expansion joint settings? 1 When a settlement joint is set between a high-rise building and a connected podium, it is reminded that the foundation depth of the high-rise building should be at least 2m deeper than the piling foundation. If it does not meet the requirements, effective measures must be taken. It can be considered that the application of coarse sand at the subsidence seam surface is more effective, and at the same time, the reliable lateral constraint around the main building foundation must be ensured. 2. When no settlement joint is provided between the high-rise building and the connected podium, this time you can consider setting the post-cast zone on the side of the podium. The position of the post-poured zone should be set within the second span of the side pillar of the main building. The post-pouring concrete should be poured according to the measured settlement value and the post-settlement difference can meet the design requirements. 3. When settling joints and post-casting belts are not allowed between high-rise buildings and connected podiums, you can carry out foundation deformation checking at this time. When checking, the interaction between foundation and structural deformation needs to be taken into consideration and corresponding effective measures should be taken. Summary: What is the function of expansion joints and what are the relevant requirements for expansion joint installations? The expansion joints are still relatively large, but they must be installed according to their requirements. Play a corresponding role. Zirconia Ceramic Standard Parts The zirconia ceramic oxygen sensor has high mechanical properties and reliability. As a component for purifying exhaust gas, it is used to measure the O2 concentration in the exhaust gas of the vehicle, and then feed the measured value back to the engine feed and fuel supply system. In order to keep the fuel in a fully combusted state. Since all the phases of the ceramic material are completely cubic-type stabilized zirconia, tetragonal and monoclinic mixed partially stabilized zirconia, the mechanical properties are excellent during use, and the heat generated by friction can be reduced. Zirconia Ceramic Standard Parts,Steel Zirconia Ceramic Parts,Anti-Abrasive Technical Ceramic,Alumina Ceramic Molded Parts Dongguan Haikun New Material Co., Ltd. , https://www.nitrideceramic.com
