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87results about How to "Avoid horizontal displacement" patented technology

Pile foundation underpinning method for building foundation adjacent to deep foundation pit

ActiveCN104179204AMeet bending resistanceMeet punching resistanceFoundation repairArchitectural engineeringShear resistance
The invention relates to the technical field of civil engineering foundation reinforcing of industrial and civil construction projects, in particular to a pile foundation underpinning method for a building foundation adjacent to a deep foundation pit. The method includes the steps of firstly, investigating and designing, to be more specific, investigating the existing building, selecting foundation underpinning pile types according to building foundation size, buried depth, distance between the building foundation and the deep foundation pit and the depth of the deep foundation pit, calculating to determine the required length and number of foundation underpinning piles according to bearing capacity, allowing the foundation underpinning piles to exceed the depth of the bottom of the deep foundation pit, and completing ring beam design; secondly, pressing the piles at the edges of the building foundation; thirdly, performing pile foundation underpinning on the building foundation. The method has the advantages that the building foundation satisfies the requirements of bending resistance, punching resistance and shearing resistance by the aid of pile foundation underpinning, natural foundation bearing of the building foundation is changed into pile foundation bearing, additional load of the building foundation to the deep foundation pit is lowered greatly, sedimentation and horizontal displacement of the building foundation adjacent to the deep foundation pit are solved, and factory building safety is guaranteed.
Owner:山西钢铁建设(集团)有限公司

Production clamp for automobile wheel steel ring trimming

The invention relates to the technical field of automobile wheel steel ring production clamps, in particular to a production clamp for automobile wheel steel ring trimming. The production clamp comprises a base, a stand column is arranged on the base, a rotating disc is mounted on the stand column through a bearing, a sleeve is mounted on the rotating disc, the sleeve and the stand column are coaxially arranged, a plurality of hydraulic cylinders are arranged on the outer wall of the sleeve, a linear guide rail is arranged between each hydraulic cylinder and the rotating disc, and connecting rods are arranged at the ends of the piston rods of the hydraulic cylinders, and are mounted in the linear guide rails in a sliding manner; a round bearing table is arranged at the end of the stand column, a plurality of first grooves are formed in the outer wall of the bearing table, rotating shafts are erected in the first grooves, the rotating shafts are sleeved with a connecting plate in clearance fit with the rotating shafts, two parallel sliding grooves are formed in the upper surface of the connecting plate, sliding rods are arranged in the sliding grooves in a sliding manner, the opposite inner side tops of the two sliding rods are rotatably connected with a baffle, and a bolt hole is formed in the end of the baffle. The production clamp can be applied to multiple automobile steel rings, and it is ensured that during automobile wheel steel ring machining, displacement is not generated, and errors are avoided.
Owner:大楚神驰车轮股份有限公司

Refrigeration module for cold storage and refrigerating device and cold storage and refrigerating device

The invention relates to a refrigeration module for a cold storage and refrigerating device and the cold storage and refrigerating device. The refrigeration module comprises an evaporator box assembly, a bottom support plate and a lifting mechanism. The top of the evaporator box assembly is provided with an air supply opening and an air return opening. The bottom support plate is used for bearingthe evaporator box assembly. The lifting mechanism is provided with at least one lifting unit. Each lifting unit comprises a cam located under the evaporator box assembly, the circumferential curved face of the cam abuts against the bottom of the evaporator box assembly, and the cam is arranged to operationally rotate in the vertical plane relative to the bottom support plate so as to lift and/ordrop the evaporator box assembly. The cold storage and refrigerating device comprises at least one storage module, a rack used for supporting at least one storage module, and the refrigeration module.At least one storage module is arranged on the rack, and the refrigeration module is arranged in the rack and is located below at least one storage module. The refrigeration module can be in seal connection with the storage module and is convenient to disassemble and assemble independently.
Owner:QINGDAO HAIER SMART TECH R & D CO LTD

Fair-faced concrete structure beam and column joint formwork reinforcement system

The invention discloses a fair-faced concrete structure beam and column joint formwork reinforcement system, which comprises a column formwork and a beam formwork. The backs of the column formwork and the beam formwork are provided with back dorsal ribs. The fair-faced concrete structure beam and column joint formwork reinforcement system is characterized in that: frameworks mutually matched are arranged on the back of a joint edge of the column formwork and the beam formwork; the frameworks of the column formwork and the beam formwork are clamped through a fixture for seaming; the dorsal ribs of the column formwork are vertical dorsal ribs; at least two dorsal ribs of the beam formwork above the column formwork extend the lower end heads to the back of the column framework, and horizontal pressure levers are pressed outside the dorsal ribs; the framework of the column formwork is welded with a plurality of lead screws vertical to a main formwork; and the lead screws extend out of the pressure levers and the end parts of the lead screws are provided with nuts. The fair-faced concrete structure beam and column joint formwork reinforcement system is easy to operate, has low investment, can effectively ensure the flatness of a construction joint at a beam and column joint when the fair-faced concrete structure beam and column are simultaneously poured, and ensures the construction quality of the fair-faced concrete construction joint.
Owner:CHINA CONSTR THIRD ENG BUREAU GRP CO LTD +1

Forming-tool-type staircase formwork system and constructing method thereof

Disclosed are a forming-tool-type staircase formwork system and a constructing method thereof. A steel support is arranged between lateral formworks of the forming-tool-type staircase formwork system, and the steel support comprises two supporting frames and transverse main joist steel tubes for connecting the supporting frames. The supporting frames comprise longitudinal main joist steel tubes and angle steel supporting frame bodies on the bottom surfaces. The angle steel supporting frame bodies are arranged in the mode that the angle steel supporting frame bodies correspond to stepping lateral plates one to one, and vertical angle steel of the angle steel supporting frame bodies are connected with the stepping lateral plates through self-made connecting pieces. According to the forming-tool-type staircase formwork system, the axis of a staircase is located accurately, the geometric dimension of the staircase and the flatness of the forming face of the staircase are effectively controlled, the problems that in traditional construction, a stair formwork is prone to deflecting and the concrete forming quality is poor are solved, and the problems that in a fully-closed staircase formwork, concrete construction and vibration are inconvenient, many air bubbles exist on the surface after forming and the cost is high are also solved. The method is simple, construction is convenient, the quality is reliable, the cost is low and the method is suitable for formworks of high-rise building concrete-slab-type staircases.
Owner:CHINA CONSTR SECOND ENG BUREAU LTD

Construction method of air duct structure sharing side wall together with subway station

PendingCN110499779AReduce the amount of demolition worksVersatileArtificial islandsCellarsRebarInstability
The invention provides a construction method of an air duct structure sharing a side wall together with a subway station. The construction method of the air duct structure sharing the side wall together with the subway station specifically comprises the steps of firstly, adopting a mode of erecting templates on the two sides to construct the side wall shared by the air duct structure and the subway station; secondly, breaking station fender posts in a shared side wall area according to a mode of breaking one post every 2-4 posts; finishing excavation of earthwork and construction of an air duct bottom plate, wherein the air duct bottom plate is connected with a station middle plate through a fender post breaking area to form a temporary support; after a station main body structure is constructed, breaking the rest fender posts, and pouring micro-expansion concrete in the breaking area; and fixing the template on the air duct side of the shared side wall on a supporting net sheet by embedding a steel reinforcement anchor bolt in the station building envelope and welding the supporting net sheet on the exposed end of the steel reinforcement anchor bolt. The construction method of theair duct structure sharing the side wall together with the subway station can be widely used for construction of the air duct structure when the station and an air duct share the side wall; the apparent mass of concrete of a shared side wall cast-in-place structure is guaranteed; and the occurrence of foundation pit instability accidents is avoided.
Owner:URBAN MASS TRANSIT ENG CO LTD OF CHINA RAILWAY 11TH BUREAU GRP

Camellia nitidissima type structure main tower construction method

The invention provides a camellia nitidissima type structure main tower construction method which comprises the following steps: correspondingly dividing each tower column into a plurality of tower body sections, tower arch sections and closure sections according to a three-dimensional model, and calculating and processing a template and a framework of each section; pouring the tower body sections, and for the tower body sections which incline outwards by more than or equal to 5 degrees in the transverse bridge direction and the longitudinal bridge direction, mounting a tower body longitudinaltensioning device between every two tower bodies, and mounting tower body transverse tensioning devices in the tower bodies so as to ensure the line type control of the tower bodies; pouring the tower arch sections and the closure sections; installing a tower arch longitudinal restraining device between every two tower arches; and installing and tensioning stay cables, and dismantling the tower body longitudinal tensioning devices, the tower body transverse tensioning devices, the tower arch longitudinal restraining devices and a supporting steel frame after tensioning is completed. By meansof the method, it is guaranteed that the line type of the main tower meets the design requirement, and the stability of the main tower structure can be guaranteed in the construction process.
Owner:CHINA RAILWAY SHANGHAI ENGINEERING BUREAU GROUP CO LTD +1
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