33results about How to "Change the construction method" patented technology

The invention discloses a method for remotely controlling a string to go up to a platform and go down from the platform during operation under pressure. The method comprises the following steps that 1, the string rolls in a ground slideway; 2, an auxiliary arm of a hydraulic mechanical arm is controlled to elongate, so that the front end of the auxiliary arm stretches out of a fence of the operation platform; 3, a cable at the front end of the auxiliary arm is controlled to be lowered down, and a string gripping device is put down on the ground; 4, the string gripping device is switched on, the string gripping device is connected with a string coupling, and a gripper is closed; 5, the cable at the front end of the auxiliary arm is controlled to be lifted up, and the string slides to a vertical state along the ground slideway; 6, the cable is controlled to continue to be lifted up until the string is lifted to the position where the string is flush with the previous string running in awell; 7, an auxiliary arm of a mast is controlled to retract, so that the front end of the auxiliary arm retracts to the position above a well mouth; 8, after hydraulic tubing tongs are operated to complete screwing-on of the string, the gripper is controlled to be opened, and the lifting operation of the string is completed. By means of the method, the string can be remotely controlled to go up to the platform or go down from the platform, the operation efficiency is improved, and the operation risk is greatly reduced.

The invention discloses a method adopting vertical stay ropes to construct steel-concrete composite girders. Firstly, steel girder units are prefabricated, multiple temporary suspending pieces are arranged on flanges of steel girders in a spaced way, and meanwhile multiple groups of stay rope devices are correspondingly designed on a bridge girder erection machine; during construction, first holedsteel girder units are erected in place, then suspension clasps at the bottoms of the stay ropes on the bridge girder erection machine are connected with the suspending pieces on the flanges of steelgirders to make the stay ropes in a vertical state, then rope forces of the stay ropes reach set value through stretching and drawing, and then the stay ropes are locked; prefabricated concrete bridge deck slabs are installed; bridge deck slab wet joint concrete is poured, and after the bridge deck slab wet joint concrete reaches the design strength, connection between the stay ropes and the suspending pieces is relieved; then, second holed steel girder units are erected to complete 'simple-bracing variable-continuity' system conversion of two-holed steel girders is completed; by this analogy, construction of a whole connected bridge is completed. The method can improve the material utilization efficiency of traditional support-free steel-concrete composite girder construction, has a series of advantages of quick and convenient construction and the like and has the wide application prospect in large-medium-span composite girder erection.

The invention relates to a turntable vehicle, in particular to a structural improvement of a self-propelled turntable vehicle. The invention is characterized in that the self-propelled turntable vehicle comprises traveling trolleys (1) and a vehicle body (2) arranged on the traveling trolleys (1), an upper turntable body (4) which can be driven by a rotary driving device (3) to horizontally rotate on the vehicle body (2) is arranged on the vehicle body (2), and a traveling wheel device (6) with a sensor is installed at the lower part of the upper turntable body. Thereby, the invention has theadvantages that: 1. the design is reasonable, the structure is simple, the noise is low and the vehicle is very practical; and 2. the previous construction method is changed, the operation stress is released for railway freight and time is saved for the laying and erecting construction units.

The invention relates to a steel dam space truss structure unit body and an arch-style steel dam. The unit body is a hexahedral space truss structural body with a front end surface and a rear end surface in key pattern structures and other lateral surfaces in a stud link chain structure, connecting rods are respectively arranged between a central node O of the front end surface and other nodes, supporting connecting rods are respectively arranged between four middle nodes A,B,C and D of the front end surface and four vertexes of the rear end surface, and supporting connecting rods are respectively arranged between a central node O' of the rear end surface and the four vertexes of the rear end surface. The steel dam, which is a space truss structure with a curve upstream surface, is formedby combining the space truss structure unit bodies, an eliminator is fixed on the curve upstream surface, the bam bottom of the steel dam is fixed with a reinforced concrete bearing platform, and both sides of the steel dam are respectively fixed with the stepped bearing platform formed by reinforced concrete structures at both banks. The steel dam is kept stable mainly by the counteraction of arc ends at both banks and has strong overload capacity, high degree of safety and engineering investment saving.

A formwork support system suitable for cushions on steep slopes of large-scale deep pits, which is an inverted square platform inner formwork composed of cushions at the bottom of the pit, anti-floating steel bars, templates and steel pipe support frames; the bottom cushion of the pit The layer is located at the bottom of the pit, and the anti-floating steel bars are pre-buried at the bottom of the pit and integrated with the cushion layer at the bottom of the pit; Fastener-type steel pipes are set up in the shape of an inverted square truss, the steel pipe support frame is connected with the anti-floating steel bars, the template is an inverted trapezoid, installed on the outside of the four inverted trapezoidal slopes formed by the steel pipe support frame, and the bottom edge is fixed on the bottom pad of the pit On the layer, there is a reinforcement ring composed of concrete blocks on the cushion at the bottom of the pit and around the outside of the formwork; the formwork pouring and tamping construction method of using this formwork system for the cushion on the steep slope surface of a large deep pit has changed the traditional large deep pit. The construction method of the cushion layer on the steep slope of the trench pit is scientific, the overall construction progress is fast, and the quality is good.

The invention relates to a construction method for inserting bars in a frame structure column, which is characterized in that it comprises the following steps: installing the steel bars in the lower layer of the raft slab, installing the positioning stirrups at the bottom of the column; making and installing the steel bar skeleton for inserting bars in the column; installing the upper steel bars on the raft slab, installing and positioning Structural steel bars; installation of column inserts to anchor steel bars; concealed acceptance and pouring of concrete. The invention has the advantages of simple structure and convenient use, can effectively ensure the accurate positioning of frame structure column insertion bars, and is convenient for subsequent positioning and setting out and column formwork construction.

The invention discloses a method of constructing a steel-concrete composite steel beam adopting a crossing type inhaul cable. The method includes the steps that firstly steel beam units are prefabricated, a plurality of temporary suspension pieces are arranged at the steel beam bottom plates, inhaul cable devices are correspondingly arranged at bridge steel beam erection machines simultaneously, after a first steel beam crossing the bridge opening is erected to be on position, suspension clasps at the bottom portions of the inhaul cables of the bridge steel beam erection machines and the suspension pieces of the steel beam bottom plates are mutually connected in a crossing mode to enable the inhaul cables of the midspan area to form a crossing cable-stayed condition; then the inhaul cablestress is stretched to a preset value to be locked; prefabricated concrete bridge deck slabs are installed; bridge deck slab wet joint concrete are poured; when the bridge deck slab wet joint concreteachieves the designed strength, the connection of the inhaul cables and the suspension pieces are relieved; a second steel beam crossing the bridge opening is erected, the construction of steel beamscrossing the two bridge openings is completed; and in turn, the construction of the whole bridge is completed. According to the method of constructing the steel-concrete composite steel beam adoptingthe crossing type inhaul cable, the material using efficiency of traditional non-bracket construction steel-concrete composite steel beam can be improved, the convenient and rapid construction and aseries of advantages are possessed, and wide application prospects in large and middle span composite beam erection are possessed.

The invention relates to a lifting method of a large-span steel structure. The method includes the steps of 1, preparing for construction; 2, positioning multiple machines; 3, performing assembly and grouping; 4, re-checking dimensions; 5, determining lift points and binding ropes; 6, checking for overall lifting; 7, aligning bolts with holes; 8, fastening all bolts; and 9, removing a lift. By using the lifting method, temporary scaffolds to be set up in the construction process of a steel structural roof are greatly decreased, and aerial work is greatly reduced; site space is made full use, thereby enabling convenience and quickness; reserving or removing a roof and even setting up scaffolds in the lifting process of indoor raking machinery of similar structure are not required, thereby enabling significant benefit; lifting machinery of small tonnage is satisfactory to construction in resource-deficient areas and is easy to popularize.

The invention discloses a method for constructing a reinforced concrete combined beam through hybrid inhaul cables. The method includes the steps that firstly, steel beam units are prefabricated, eachsteel beam upper flange is provided with the even number of temporary lifting sheets, meanwhile, inhaul cable devices are correspondingly arranged on a bridge girder erection machine, construction isconducted so that a first steel beam can be erected in position, suspension clasps at the bottoms of the inhaul cables on the bridge girder erection machine are connected with the lifting sheets of the corresponding steel beam upper flange, a mid-span region is in a vertical state, and the end portions are in a cable-stayed state; the inhaul cables are tensioned till the cable force reaches a setvalue, and then the inhaul cables are locked; precast concrete bridge deck slabs are installed; bridge deck slab wet joint concrete is poured; after the bridge deck slab wet joint concrete reaches the designed strength, the inhaul cables and the lifting sheets are disconnected; then a second steel beam is erected, and construction of the two steel beams is finished; and similarly, construction ofa whole bridge is finished. By the adoption of the method, the material use efficiency of a traditional non-support construction reinforced concrete combined beam can be improved, meanwhile, the concrete anti-cracking performance of a hogging moment region of the combined beam can be improved, a series of beneficial effects such as convenient and quick construction are achieved, and the method has wide application prospects in large-middle-span combined beam erection.

The invention relates to a wall structure of an SMC (Sheet Molding Compound) composite material. The wall structure is characterized by comprising a daughter plate and a parent plate which are formed by pressing the SMC composite material, wherein the daughter plate is buckled on the parent plate; the parent plate is fixedly installed on a main frame and comprises a substrate and a blocking column sleeve arranged on the substrate; the daughter plate comprises a substrate and a blocking column arranged on the substrate, the blocking column is inserted to the blocking column sleeve; a swallow-tailed annular bulge is arranged on the outer circular surface of the blocking column; a swallow-tailed annular groove matched with the bulge is arranged in an inner hole of the blocking column sleeve;and foam cement is filled in the hollow cavity between the daughter plate and the parent plate. By adopting the wall structure consisting of the daughter plate, the parent plate and the foam cement, the construction way of a wall body is changed, the construction working hour is shortened, the building material cost is lowered, and building wastes are not generated in the construction process; the daughter plate and the parent plate can be manufactured into various colors; paint is unnecessarily coated on outdoor wall surfaces, and secondary decoration is unnecessarily performed on indoor wall surfaces, therefore, the cost is saved, and the time waiting for residence is shortened. In addition, the wall structure has the characteristics of light weight, strong loading, heat insulation, sound insulation, water resistance, fire resistance, insulation, shock resistance, no shielding and the like.