481 results about "Assembly (construction)" patented technology

The invention relates to the technical field of ship construction, and discloses an intelligent diagnosis and early warning method for ship final assembly construction quality potential safety hazards. The method comprises the following steps: receiving real-time sensing data of a plurality of detection nodes in ship construction, and analyzing the real-time sensing data through a pre-trained quality feature extraction model to generate a hidden danger feature vector and a risk level; and dynamically generating a hidden danger diagnosis strategy according to the sequence, wherein the hidden danger diagnosis strategy comprises a detection equipment scheduling instruction and a defect repair priority sequence. And utilizing the pre-trained hidden danger ship dynamic model to predict a defect diffusion trend, adjusting a dynamic response threshold value, optimizing, updating and repairing a priority sequence through an adaptive genetic algorithm, and outputting a quality early warning instruction to a ship construction management system. The method can accurately diagnose and early warn potential quality safety hazards, reasonably dispatch resources, improve the ship construction quality and safety, reduce the cost, and promote the intelligent development of the ship construction industry.

According to the auxiliary supporting mechanism for assembling the internal parts of the Tokamak and the assembling method, all auxiliary stand columns and a center stand column are installed at the same center distance, and the center stand column is provided with an upper-layer disc-type turn buckle supporting mechanism and a lower-layer disc-type turn buckle supporting mechanism so as to be connected with the outer surface of a vertical section of a vacuum chamber ring petal; the outer side supporting mechanism is connected around the outer surface of the vacuum chamber ring valve set, the double-column type bottom supporting table is located below the vacuum chamber ring valve set, and the vacuum chamber ring valve set is supported from the outer side and the lower portion of the vacuum chamber ring valve set; a stand column connecting rod is connected between every two adjacent auxiliary stand columns, and a limiting mechanism capable of extending into a window in a vacuum chamber ring petal is installed on each stand column connecting rod. The U-shaped operation platform penetrates through the vacuum chamber ring petal set, and a plurality of small internal part assembling auxiliary tools are movably installed on the surface of the U-shaped operation platform. The method is wide in application range, can effectively solve the problems that transportation channels of internal parts are few and the assembly construction space is limited, and reduces the construction difficulty and the construction cost.

The invention relates to the field of constructional engineering, and discloses an assembly type reinforced concrete-steel structure foundation pit supporting system convenient to disassemble and a construction technology, and the assembly type reinforced concrete-steel structure foundation pit supporting system comprises a top beam, a waist beam, a supporting pile and an inner supporting system; the inner supporting system is formed by assembling a standard steel-concrete beam section main support and a steel member auxiliary support in cooperation with a jack adjusting system. The invention further provides a new system on-site assembly construction process, namely detailed steps of assembly construction from the uppermost layer to the lower layer step by step. The fabricated structure integrates the advantages of two fabricated structures, is suitable for foundation pit supporting with large stress and strict deformation control, and has the advantages of being high in construction speed, short in construction period, low in construction cost, convenient to dismantle and capable of completely recycling most of inner supporting components compared with a traditional cast-in-place steel-concrete foundation pit supporting system.

The invention relates to the technical field of steel truss assembly precision control, and discloses a large-space steel truss assembly construction precision control method based on a real-time monitoring technology. According to the method, through a sensing technology and a data processing system, steel truss supporting node coordinates, strain force and material temperature data are collected in real time and transmitted to a data processing center through a wireless network to be subjected to low-pass filtering and stress and thermal expansion calculation, and therefore it is ensured that the material state meets the assembling standard; error calculation and precision evaluation in the process not only can timely discover and correct deviation, but also can feed back to the assembling and adjusting equipment through intelligent signals to realize automatic precision control, and compared with traditional manual measurement, the method has the advantages that the influence of environmental factors on measurement accuracy is greatly reduced, the limitation of static measurement is overcome, and the measurement accuracy is improved. And real-time monitoring and correction capabilities are provided, so that structural deformation and safety risks are reduced, and the overall construction quality and safety of the steel truss are ensured.

The invention discloses a wind power assembly type reinforced concrete tower tube assembly construction method, an assembly type reinforced concrete tower tube comprises a concrete tower splicing ring piece, a concrete tower full-circle ring piece and a steel tower conversion section, and the tower tube comprises the spliced ring piece, the full-circle ring piece and the steel tower conversion section from bottom to top; the construction method comprises the process of assembling the fabricated reinforced concrete tower drum through concrete tower piece splicing construction, concrete tower drum and steel tower conversion section hoisting construction and concrete tower drum prestress construction. According to the construction method, assembly and assembly of the concrete tower drum are completed through crawler crane line production, the fan foundation, the concrete tower drum and the steel conversion section are connected through concrete tower drum outer cable unbonded prestress construction, and the construction period is remarkably shortened. In addition, by optimizing the construction process, rapid installation of the prefabricated shell ring is achieved, the construction progress is accelerated, and meanwhile the construction cost is reduced.

The invention discloses a separating and rotating type high-altitude corridor system construction platform and a construction method thereof. The platform comprises a first-stage mounting hole, a second-stage mounting hole, an additional supporting beam and a second-stage supporting beam. The supporting assembly comprises a panel, beam side and plate bottom support and a safety protection assembly. A detachable middle supporting assembly and a temporary support with the adjustable length are adopted, after corridor structure construction is completed, hoisting equipment is used for completing construction, a double-beam assembly composed of a transverse main beam and a longitudinal secondary beam is downwards hoisted to a second-stage mounting hole and a second-stage supporting beam, secondary reconstruction is conducted, and a corridor decoration platform is applied. Pressure relief is achieved by controlling and lowering the temporary support, and the separation difficulty of the middle supporting assembly is greatly reduced. In addition, according to the method, the combination process of the transverse main beams and the longitudinal secondary beams or small beams is completed on the ground, and safe, modularized and efficient splicing construction is achieved.

The invention discloses an integral lifting disassembly and assembly construction process for a cantilever bent cap support. The integral lifting disassembly and assembly construction process comprises the steps that S1, a comprehensive lifting device is hoisted to the top of a bridge pier column to be installed and fixed; s2, a cantilever bent cap support is assembled on the ground; s3, the cantilever cover beam support is integrally lifted to a preset position, the cantilever cover beam support is installed and fixed, and the comprehensive lifting device is dismantled; s4, the cantilever bent cap is poured through the cantilever bent cap support; s5, the comprehensive lifting device is hoisted to the top of the cantilever cover beam to be installed and fixed; and S6, the whole cantilever bent cap support is lowered to the ground, the cantilever bent cap support is disassembled, and the cantilever bent cap support is disassembled on the ground. According to the construction method, the cantilever bent cap support is assembled on the ground, and then overall lifting is conducted through the comprehensive lifting device, so that the high-altitude operation time can be effectively shortened, the high-altitude falling risk of workers is reduced, and the psychological pressure on constructors is reduced; and after construction of the bent cap body is completed, the whole bent cap body is put down for construction of the next work point, and the turnover efficiency is improved.

The invention relates to the technical field of wind power concrete tower drum assembly construction, in particular to a wind power concrete tower drum assembly construction temporary supporting system which comprises a supporting rod, two telescopic assemblies are arranged in the supporting rod, and a clamping rod is slidably connected into the telescopic assembly located at the lower end. A mounting rod is slidably connected into the telescopic assembly located at the lower end, a positioning plate is fixedly connected to the mounting rod, a guide slope block is fixedly connected to the upper end of the positioning plate, a slow descending slope block is fixedly mounted at the lower end of the positioning plate, a rotating sleeve is rotatably connected to the upper end of the supporting rod, and a ball assembly is arranged in the rotating sleeve. Rapid alignment and stable attachment of the tower drum are achieved through the telescopic assembly, the rotating sleeve and the like. The process is simplified through mechanical driving, the labor intensity is reduced, and the construction efficiency is improved; supporting is stable, buffering and falling prevention are achieved, and construction safety is guaranteed; the modular design is suitable for tower barrels of various specifications, repeated use can be achieved, and the construction cost is greatly reduced.

The utility model discloses a steel structure cooling tower consisting of double-layer trilateral and quadrilateral units. The cooling tower consists of an upper part and a lower part, the lower part is formed by connecting and combining double-layer trilateral units according to a certain rule, and each double-layer trilateral unit is a double-layer reticulated shell formed by connecting a trilateral outer side chord member and a trilateral inner side chord member through a series of web members; the upper part is formed by connecting and combining double-layer quadrilateral units according to a certain rule, and each double-layer quadrilateral unit is a double-layer reticulated shell formed by connecting a quadrilateral outer side chord member and a quadrilateral inner side chord member through a series of web members. According to the double-layer steel structure cooling tower, the internal force conduction path of the double-layer steel structure cooling tower under the action of lateral force is optimized, the space stress performance is good, the stability of the structure is guaranteed, and the overall steel consumption is further reduced. Through connection and assembly of modular unit assemblies, standardized design, industrial production and fabricated construction of the cooling tower structure are achieved.

The lock pin type connecting device for the reinforced concrete precast pile is convenient for assembly construction. Which comprises a lower base (1), a socket column (2), a socket hole (3), an upper base (4), a threaded anchoring rib (5), a threaded hole (6), a bolt hole (7), a bolt rod (8) and a segmental precast pile (9), and is characterized in that: (1) the disturbance of the traditional cast-in-situ bored pile foundation on the environment and the stratum is overcome, and the ecological environment of a special region is favorably protected; and (2) the pile foundation sections and the connecting devices thereof are all prefabricated in a factory in a standardized manner, so that the construction efficiency of the pile foundation is effectively improved, and the flow of field assembly construction is simplified. The connecting device is simple in structure and convenient to operate, the number of the high-strength connecting pieces and the number of the reserved inserting holes can be adjusted according to actual engineering requirements, and construction flexibility is improved.

The invention relates to a large-span steel structure corridor sliding assembly construction process, and aims to solve the problems of high difficulty, low efficiency, difficulty in dismounting an auxiliary structure and the like in large-span steel structure corridor construction by a traditional hoisting method. According to the process, mounting of a longitudinal triangular truss, a middle shaft small truss and an outrigger is completed by assembling a door-type steel truss column truss on the ground or a roof, mounting a sliding rail and assembling a truss beam and the door-type steel truss. And the assembled door-type steel truss combination slides, the steps are repeated on the two sides, and finally the two-large-area steel structure corridor formed by assembling seven door-type steel trusses is formed. According to the process, the Z-shaped sliding rails and the detachable rollers are adopted, so that all mounting auxiliary parts can be independently separated from the truss structure after the structure is mounted, the construction efficiency is improved, the cost is reduced, and the aesthetic property and the functionality of the structure are ensured. The technology is suitable for rapid and efficient construction of the large-span steel structure corridor and has remarkable economic benefits and social benefits.

The invention relates to a connecting structure of an external prefabricated frame of an existing structure and an assembling construction method.The connecting structure comprises the external prefabricated frame used for reinforcing the existing structure and an annular steel sheet, the existing structure comprises an existing component, and the existing component is provided with a disc groove and a non-penetrating steel bar planting hole channel I; the externally-attached prefabricated frame is formed by a plurality of externally-attached prefabricated parts in a staggered mode, penetrating steel bar planting hole channels II are formed in the positions, corresponding to the steel bar planting hole channels I, of the externally-attached prefabricated parts, the annular steel sheets are matched with the disc grooves, one faces of the annular steel sheets are fixedly embedded in the disc grooves of the existing parts, and the other faces of the annular steel sheets are tightly attached to the inner side surfaces of the externally-attached prefabricated parts. And through combined use of the annular steel sheets and the bolt pin steel bars, the shear bearing capacity of the connecting interface of the existing component and the externally-attached prefabricated component is remarkably improved, the use amount of shear-resistant connecting joints is greatly reduced, the construction cost is further reduced, and the drilling workload is also greatly reduced.

The invention relates to the technical field of ship manufacturing, and discloses a general assembly construction data service encapsulation and construction method based on a cloud native technology. The method comprises the following steps: dividing a ship final assembly construction data source into design, production, quality inspection, logistics and operation and maintenance data units, and determining a data type and an interface protocol; then, constructing an initial service model based on a micro-service architecture and a containerization technology; then, dynamic service packaging is carried out, and cross-model data routing and load balancing are achieved; dynamically allocating resources and scheduling tasks through a multi-target scheduling algorithm model; iteratively optimizing the service model by utilizing an incremental learning mechanism; and finally, realizing gray release and rolling update by continuously integrating and continuously delivering assembly line deployment to a cloud native platform. The ship general assembly construction data processing efficiency, the system performance and the service quality are improved, and the problems of disordered data management, low processing efficiency, unreasonable resource allocation and the like in a traditional mode are effectively solved.

A top-down construction type assembly construction method for paved road surface, including the following steps: step I, manufacturing prefabricating slabs: using a top-down method to manufacture the prefabricating slabs, and providing bolt sleeves, inside the prefabricating slabs, which are evenly arranged in the prefabricating slabs; step II, mounting the prefabricating slabs: on a lower bearing plate, placing the prefabricating slabs in one step, performing a fine tuning on a position and an altitude of the prefabricating slabs, performing a grouting construction, finally forming the paved road surface; the prefabricating slabs are manufactured by laying bricks and pouring concrete, the prefabricating slabs are rolled over and mounted, thus eliminating on-site concrete bonding between bricks and the lower bearing plate, improving overall stability of the bricks and the prefabricating slabs after being mounted, assembled mounting for a paved road surface is implemented, and the construction period is shortened.

The invention provides an energy consumption dynamic monitoring and energy-saving and carbon-reducing regulation and control method for a final assembly construction production link. The method comprises the following steps: S1, acquiring energy consumption related data of each process in an industrial production cycle; s2, constructing an energy consumption prediction model which comprises a mechanical power energy consumption prediction model and a thermal process modification energy consumption prediction model; S3, inputting the data acquired in the step S1 into the energy consumption prediction model constructed in the step S2 to obtain related energy consumption prediction data; s4, converting the energy consumption prediction data into carbon emission, and calculating based on the carbon intensity coefficient of the energy type to obtain total carbon emission; and S5, inputting the total carbon emission into a multi-objective genetic algorithm to generate a Pareto optimal solution set, and obtaining an optimal combination of energy consumption and carbon emission. According to the method, the energy consumption cost, the carbon emission intensity and the production efficiency are planned as a whole through the multi-objective optimization algorithm, the global optimal decision under the equipment cooperation and dynamic working conditions is realized, and the complex requirements of multi-variety small-batch production are effectively met.

The invention relates to the technical field of bridges, and provides a linear control method for girder assembly in incremental launching construction, which comprises the following steps of: temporarily assembling a kth batch of girder sections according to a positioning height difference calculated value on a construction site, and determining an optimal space positioning parameter of a temporary stress-free linear shape when a girder section height difference measured value of each girder section is smaller than a preset threshold value; and welding the kth batch of beam sections, then carrying out incremental launching construction on the kth batch of beam sections in place, when the kth batch of beam sections is not the last batch of beam sections, obtaining a tail beam height difference measured value of the last beam section of the kth batch of beam sections, and determining a positioning height difference calculated value of the first beam section of the (k + 1) th batch of beam sections and positioning height difference calculated values of the remaining beam sections. According to the method, the splicing error construction of each batch is controlled, and the splicing construction of the next batch is guided through the correction of the actual tail end state after the pushing of the previous batch, so that the timely correction of the periodic linear error is realized, and the high-precision linear control of the main beam in the multi-round pushing construction is realized.

The application discloses a tunnel secondary lining steel bar standardization rapid assembly construction method. The application has two technical paths: technical path A processes five segmental assembly secondary lining steel bars outside a hole, realizes inward bending through movable hinges between segments, achieves overall reduction of the secondary lining steel bars, and finally pours secondary lining concrete through walking, jacking systems of the secondary lining steel bar assembly trolley, space dislocation of forward movement of the secondary lining trolley and re-retreat positioning. Technical path B lengthens a reserved height of a tunnel inverted arch steel bar, reduces the overall height of the secondary lining steel bars, processes secondary lining steel bar annular pieces outside the hole, realizes longitudinal transportation of the secondary lining steel bar annular pieces through walking, jacking and rotating systems of the secondary lining steel bar assembly trolley, 90-degree rotation, space dislocation of forward movement of the secondary lining trolley and re-retreat positioning, and finally pours secondary lining concrete. The two methods can realize standardization production of secondary lining steel bars outside the hole and transportation to the tunnel for installation.

The present invention discloses a connection component for prefabricated buildings, comprising: a building column and a building beam, and a right-angle fastener fitted at the included angle between the building column and the building beam, the right-angle fastener being fixedly installed between the building column and the building beam; further comprising: a fastening groove, which is opened at the outer side position of the right-angle fastener, a first pressing member and a second pressing member are respectively snap-connected through the fastening groove at the front and rear sides above the right-angle fastener, the tops of the first pressing member and the second pressing member are overlapped with each other, the right-angle fastener, the first pressing member and the second pressing member are fixedly connected to the building column or the building beam through fixing screws, and the ends of the fixing screws are correspondingly connected with fixing nuts. This connection component for prefabricated buildings can be adaptively combined and used according to different joint structures, which is beneficial to improving the connection strength, can stably buffer, is convenient for rapid assembly, and is beneficial to improving the overall assembly construction efficiency of prefabricated buildings.

The invention provides an assembly construction method of a biological shielding wall of a fusion device and the biological shielding wall. The assembly construction method of the biological shielding wall of the fusion device comprises the following steps: manufacturing a wall body framework of a prefabricated sub-module; the wall body frameworks of the prefabricated submodules are assembled in the circumferential direction to obtain an annular framework of the biological shielding wall module, and the biological shielding wall module at least comprises a top shielding module used for arranging embedded parts and a bottom shielding module used for arranging the bottom of a Tokamak Dewar base and an annular support; and the annular framework is hoisted to a pouring foundation, and the interior of the annular framework is poured after hoisting is completed every time. According to the method, on-site high-altitude, high-strength and long-time complex operation is reduced, and construction safety risks are reduced. In addition, if internal parts need to be replaced or overhauled in the future, corresponding structures on the specific prefabricated submodules can be directionally dismantled, and when the service life of the fusion device is over, modular dismantling of the biological shielding wall and waste treatment are more efficient.

The utility model relates to a cornice aluminum plate curtain wall construction system of an upright quadrangular pyramid grid roof built-in snow melting system. The cornice aluminum plate curtain wall construction system comprises a steel keel and concrete structure connecting system, a steel keel ground jig frame accurate assembling system, a steel keel whole truss hoisting system and a gutter cornice snow melting system. According to the steel keel and concrete structure connecting system, the transverse and vertical keels are reasonably stressed, the overall performance of the wall is good, the firmness degree of the steel keel and the building body is improved, and good technical and economic benefits are achieved; according to the precise assembling system for the steel keel ground jig frame, the auxiliary control assembling precision is improved, errors generated during construction assembling are reduced, the situation that assembling construction of keel units on the ground is inconvenient is avoided, and the assembling construction efficiency is improved; when the steel keel whole truss hoisting system hoists the keel main body, through limiting and fixing arrangement of the clamping pieces, the stability of the keel main body during use is guaranteed, and the construction risk of steel keel whole truss hoisting is reduced.

The invention provides a fabricated shear wall structure and a construction method thereof, and relates to the technical field of construction.After a lower prefabricated wall is installed and fixed, a prefabricated beam is hoisted, a beam end connecting assembly at the end of the prefabricated beam is connected with a lower wall top connecting assembly arranged at the top of the lower prefabricated wall, and a prefabricated floor slab can be hoisted after connection is completed; the prefabricated floor slab is placed on the top of the prefabricated beam or the lower prefabricated wall, then the upper prefabricated wall is hoisted, the upper wall bottom connecting assembly on the upper prefabricated wall is connected with the lower wall top connecting assembly, and therefore connection of the prefabricated beam, the upper prefabricated wall and the lower prefabricated wall is completed. Continuous and rapid assembly construction can be achieved, the construction period is effectively shortened, and the technical problems that in the prior art, grouting sleeves are adopted for connection between prefabricated concrete floors and shear walls and connection between beams and shear walls, the construction period is long, and temporary supporting structures need to be additionally used are solved.

The invention relates to the technical field of construction engineering comprehensive pipeline arrangement, in particular to an electromechanical pipeline comprehensive arrangement evaluation implementation system and an application evaluation method. The evaluation implementation system adopts a modular construction technology of an assembly type prefabricated pipe comprehensive as the implementation content of an electromechanical full-specialty pipeline implementation stage; and evaluating the application effect of the modular construction of the pipe comprehensive from a plurality of evaluation indexes so as to form an evaluation system of the application effect of the modular construction of the pipe comprehensive, and evaluating the modular construction technology of the electromechanical full-specialty pipeline based on the evaluation system of the application effect of the modular construction of the pipe comprehensive. Therefore, whether the technology adopted in the electromechanical pipeline comprehensive arrangement evaluation system meets the requirements of construction efficiency and construction quality or not is determined, whether the technology meets the current building assembly construction concept or not is judged, and whether the electromechanical full-professional pipeline modularization construction method meets the requirements of cost, clear height, work efficiency and the like or not is judged. Scientific and reasonable reference basis is provided, and the accuracy of application evaluation is ensured.

To improve the workability of a block assembly formed by assembling a plurality of blocks.SOLUTION: A block assembly construction method for forming a block assembly by assembling a plurality of brick blocks 32, includes: a block arrangement step of arranging the plurality of brick blocks 32 along sealing portions 84 that protrude from a surface 82A of a sheet material 80 and extend in the shape of joints M of a brick block wall 30; and a filling step of filling the joints M of adjacent brick blocks 32 with a filling material 36.SELECTED DRAWING: Figure 8

The invention discloses a double-rocker-arm derrick hoisting working condition intelligent analysis and stability improvement method, and relates to the technical field of power grid assemblage construction equipment. Working condition data of a derrick are collected in real time, and stability analysis is carried out based on the working condition data to obtain a safety coefficient representing the stability of the current working condition; the risk assessment of the hoisting operation process is realized; furthermore, a corresponding stability improvement strategy is executed based on the safety coefficient and / or the real-time working condition data, so that the system has the capabilities of intelligent decision making and active intervention, the limitation that judgment depends on artificial experience in the prior art is broken through, the stability guarantee of the derrick is converted into active regulation and control from passive protection, and the reliability of the derrick is improved. And the operation safety and decision-making scientificity under the extreme height and complex environment are obviously improved.

The present invention relates to the field of building construction safety, and in particular to an intelligent management method and system for construction safety risks of prefabricated buildings. The method receives construction personnel data and assembly construction data within a preset range in real time; analyzes the construction type based on the construction personnel data and assembly construction data; obtains current environmental data, and analyzes whether construction conditions are met based on the environmental data and construction type; when the construction conditions are met, analyzes the risk level of the current construction in combination with the environmental data and construction type; obtains construction personnel behavior data, and determines whether the behavior data meets early warning conditions based on the current construction risk level; and sends early warning information to target construction personnel when the behavior data meets the early warning conditions. By collecting construction environment and personnel behavior data in real time, risks are dynamically assessed. This data-driven approach significantly improves the accuracy of early warnings and effectively reduces the problems of missed reports and false alarms caused by traditional static assessments.

The application discloses a kind of based on project performance assembly construction technology system evaluation method, belong to civil engineering project management field.The application solves the problem of poor accuracy caused by subjectivity in the existing assembly construction technology system evaluation method using qualitative evaluation.The application divides assembly construction technology system project into three stages, constructs multiple input-output evaluation index system, collects input and output data of different stages of completed assembly construction project of target structure system;Three-stage super-efficiency EBM model is constructed, and the total performance and construction stage performance of the completed assembly construction project of the target structure system are obtained by using the three-stage super-efficiency EBM model and the collected data;The different assembly construction technology systems used by the target structure system are compared and evaluated according to the total performance and construction stage performance.The application is mainly used for the evaluation of assembly construction technology system.

The utility model relates to an efficient connecting structure for building assembly construction reinforcing steel bars, and effectively solves the problems of high difficulty and low efficiency of end connection of assembly type building reinforcing steel bars. According to the technical scheme, the device comprises two first connecting pipes and a second connecting pipe, external threads are arranged on the outer walls of the first connecting pipes, the screwing directions of the external threads on the two first connecting pipes are opposite, a first internal thread matched with the external threads is arranged at each end of the inner wall of the second connecting pipe, and the screwing directions of the two first internal threads are opposite; an axial avoiding groove is formed in the side wall of the first connecting pipe, one end of the avoiding groove is an open end, the other end of the avoiding groove is a closed end, and the open end is communicated to one end face of the first connecting pipe; the steel bar connecting device greatly improves the steel bar connecting speed, obviously reduces the connecting difficulty, is simple and practical, and has higher axial limiting strength.

The invention relates to the technical field of bridges, and provides a segment-assembled corrugated steel web mixed girder bridge and a construction method thereof.The areas, close to bridge piers, of side spans and middle spans are composed of first-class girder sections, and each first-class girder section comprises a first concrete top plate, a first concrete bottom plate and a first corrugated steel web; the midspan area is composed of a second type of beam sections and comprises a steel bottom plate, an ultra-high performance concrete combined top plate and a second corrugated steel web; and the combined beam section is connected between the two beam sections to realize smooth transition. Through the longitudinal partition structural design, the advantages of the respective materials are fully played, the side span-mid span ratio can be compressed to 0.35-0.60, and the span capacity is remarkably improved. An ultra-high-performance concrete combined top plate is adopted in the midspan, and the dead weight is reduced by 50%; the steel bottom plate is used for replacing a concrete bottom plate, and the cracking risk of the midspan bottom plate is thoroughly eliminated. Segmental prefabrication and assembly construction is adopted, the process is standardized, the adaptability to soft foundations is high, and the problems of midspan downwarping and web cracking are solved.

The utility model relates to the technical field of hanger pre-assembly construction, in particular to an applicable adjusting jig frame device for pre-assembly of an arc hanger, which comprises a base, a support upright post, an adjusting cross beam and a support plate, the base comprises a plurality of transverse profile steels and a plurality of longitudinal profile steels which are longitudinally and transversely arranged at intervals; the supporting stand column comprises vertical profile steel and a vertical telescopic adjusting rod piece installed on the top of the vertical profile steel. An adjusting cross beam is mounted above each piece of transverse profile steel through a supporting stand column; the adjusting cross beam comprises a horizontal cross beam, an inclined cross beam and a rotating device; the tail end of the horizontal beam is connected with an inclined beam through a rotating device; and the supporting plate is mounted at the tops of the horizontal cross beam and the inclined cross beam. By flexibly adjusting the positions and the states of the supporting stand columns, the adjusting cross beams and the supporting plates, the jig frame device can adapt to pre-assembly of various arc-shaped hanging frames of different sizes and shapes.

The invention discloses an assembly type precast beam, and relates to the technical field of constructional engineering, the assembly type precast beam comprises a cross beam, and the cross beam comprises a plurality of beam bodies; a connecting column; the fixing columns are located between the opposite cross beams, and inserting grooves allowing the connecting columns to be inserted therein are formed in the fixing columns; a template block; the fixing columns are provided with limiting assemblies, and when the opposite formwork blocks abut against each other, the limiting assemblies limit the connecting columns to be disengaged from the inserting grooves. The connecting column is provided with an input pipe and an output pipe; an input groove is formed in the fixing column, and a grouting opening is formed in the fixing column. An output groove is formed in the fixed column, and a slurry outlet is formed in the fixed column; an upper communicating hole is formed in the beam body, and a lower communicating hole is formed in the beam body; a return pipe is arranged in the beam body far away from the fixed column; when the adjacent beam bodies abut against each other, the baffles are clamped into the partition grooves. An upper slurry covering groove is formed in the beam body, and a lower slurry covering groove is formed in the beam body. The assembly construction time of the precast beam can be shortened.