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249results about How to "Easy to dismantle" patented technology

Detachable assembled high-ductility steel-concrete composite beam

The invention discloses a detachable assembled high-ductility steel-concrete composite beam and belongs to the technical field of steel structures of structural engineering. A steel beam and a precast concrete floor are assembled through bolts. Bolt holes are reserved in the upper wing edge of the I-shaped steel beam, the bolts are pre-buried at the bottom of the precast concrete floor and welded or mechanically connected with transverse steel bars at the bottom, so that the ductility and the anti-collapse capability of the structure are improved under the action of a strong shock. During assembly, the precast concrete floor is built at the top of the upper wing edge of the I-shaped steel beam, the bolts pre-buried at the bottom of the precast concrete floor penetrate the bolt holes reserved at the upper wing edge of the steel beam, and then the steel beam and the floor are fastened by nuts. When the service life of the structure is up, the bolts are unscrewed and the precast floor and the steel beam are separated to realize disassembly. The novel composite beam has the advantages of a traditional cast-in-place composite beam, is simple in assembly construction, high in speed and low in cost, and can effectively prevent dust raising on a construction site; post-earthquake repair and replacement of damaged members are facilitated; and the detachable assembled high-ductility steel-concrete composite beam can be detached in the service period or after service termination, and has a wide engineering application prospect.
Owner:TSINGHUA UNIV

Construction method of deep water high pile bearing platform steel hanging box cofferdam

The invention discloses a construction method of a deep water high pile bearing platform steel hanging box cofferdam. The construction method comprises the following steps: 1) design of a steel hanging box cofferdam: Larson steel plate piles are adopted as wall plates of the steel hanging box cofferdam; 2) assembly and placement of the steel hanging box cofferdam: the steel hanging box cofferdam adopts high assembly and overall placement technologies; 3) bottom cover concrete construction: a bottom cover construction process is performed twice; after primary bottom covering, water in the steelhanging box cofferdam is extracted to a bottom cover surface; and then, the secondary bottom cover concrete casting is performed; and 4) disassembly of the steel hanging box cofferdam: after a bearing platform and part of underwater piers are constructed, the water is injected in the steel hanging box cofferdam to reach balanced inner and outer water levels; and the steel hanging box cofferdam isdisassembled. In the construction method, through the Larson steel plate piles as the wall plates of the steel hanging box cofferdam and twice bottom cover construction process, the construction progress can be accelerated, the economical cost is saved, and the engineering quality is guaranteed.
Owner:CHINA RAILWAY 23RD BUREAU GRP NO 1 ENG

Vehicle-mounted vehicle driving deviation detection apparatus and detection method

The invention discloses a vehicle-mounted vehicle driving deviation detection apparatus and detection method. The vehicle-mounted vehicle driving deviation detection apparatus includes a magnetic attraction seat, a vehicle terminal, and a wireless laser bar code scanner. The vehicle terminal is composed of a GPS positioning module, a single-chip microcomputer main control module, a data transmission and display module, an interface module, an alarm module and a power module. The host of a mobile station acquires the vehicle trajectory information in real time and sends the information to a reference station via a radio station in the host, a differential algorithm is formed in the system to obtain the high-precision mobile station coordinate, the deviation amount of the vehicle to be measured is processed and calculated through the main control chip of the single-chip microcomputer main control module, the result of the deviation amount is displayed on a four-bit digital display screen after the testing is finished, and the vehicle speed is displayed in the testing process in real time. The apparatus is simple in structure and convenient to detach, and can realize the display of the deviation amount and the vehicle speed, is suitable for automobile manufacture enterprises to do streamline test, and has wide market potential and application prospect.
Owner:WUHAN UNIV OF SCI & TECH
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