920 results about "Rapid construction" patented technology

The invention discloses a rapid construction method and system for a three-dimensional space model of a multi-level building, and relates to the field of building model construction, and the method comprises the following operation steps: S1, constructing a dynamic demand-oriented detail level model; s2, automatic component modeling based on image segmentation; s3, performing multi-version difference judgment and model updating; and S4, cloud collaboration and load optimization. According to the method and the system for quickly constructing the three-dimensional space model of the multilevel building, the region is dynamically divided through the semantic weight, so that the rendering efficiency during model construction can be effectively improved, the memory can be effectively reduced during rendering, the visual fidelity can be optimized, key curvature characteristics can be forcibly reserved for a high semantic weight region, and the construction efficiency is improved. Based on this, deformation distortion caused by simplification can be avoided, a visible area in the model can be automatically identified, an invisible area can be degraded, only the contour line frame of the building is reserved, and the overall memory occupation can be greatly reduced.

The invention discloses a perpendicularity control method and platform for tubular pile construction in the technical field of engineering construction tubular pile construction, the platform comprises a reference positioning module and a dynamic adjustment module, the reference positioning module is used for establishing a first coordinate system for an initial vertical reference of a tubular pile; the dynamic adjusting module is used for establishing a second coordinate system with the tubular pile as the reference, monitoring and correcting the perpendicularity deviation of the tubular pile in the construction process in real time and correcting the perpendicularity deviation until the perpendicularity meets the requirement, and the coordinate axis of the second coordinate system and the coordinate axis of the first coordinate system keep the spatial corresponding relation; according to the scheme, through multi-sensor data fusion and closed-loop control, intelligent control over the perpendicularity of the tubular pile is achieved, and the method is suitable for rapid construction of the tubular pile.

The invention provides a construction progress plan intelligent generation method based on a Monte Carlo tree search algorithm, and particularly relates to a construction progress plan intelligent generation and optimization technology based on a Monte Carlo tree search (MCTS) algorithm. According to the technology, a traditional MCTS algorithm is improved, and rapid generation, real-time dynamic adjustment and resource optimization configuration of a construction progress plan are achieved. Specifically, measures such as dynamic adjustment of an exploration coefficient, nonlinear adjustment of a prior probability and introduction of depth regularization are adopted to improve a traditional upper limit confidence coefficient (UCT) formula. And meanwhile, the total construction period is minimized by combining a dependency relationship between construction steps and constraint conditions of resource finiteness and utilizing a reward function with a negative value of the construction period as a core. Finally, the technology can visually output a construction progress plan in a Gantt chart form, remarkably improves the construction efficiency, reduces the dependence on high-end construction management talents, has a good real-time response capability, and has a wide engineering application prospect.

The invention relates to the technical field of tunnel construction, and discloses a rapid construction method and system for a lower step with an inverted arch of a horizontal rock stratum large-section tunnel, and the method comprises the steps: constructing a three-dimensional geological modeling system to carry out advanced geological forecast on a tunnel construction region; the three-arm drill jumbo is used for conducting self-positioning, geological self-adaptive intelligent hole arrangement, dynamic optimization of drilling parameters and dynamic allocation of drilling tasks through three-arm cooperative control; calculating the vector deviation between the actual excavation contour and the design contour; marking a preferential injection area based on a three-dimensional laser point cloud technology, and dynamically adjusting an injection track and thickness according to back break data; a multifunctional drilling and grouting integrated trolley is adopted for implementing pipe shed supporting, advanced small guide pipe reinforcement, pre-grouting reinforcement and anchor rod reinforcement; the main mechanical arm assists the trolley in drilling and laser scanning acceptance inspection of the feet-lock bolt; re-spraying to the designed thickness by adopting a wet spraying manipulator; the problems that an existing tunnel lower step inverted arch construction method is low in construction efficiency and large in construction risk are solved.

The invention discloses a lightweight knowledge graph rapid construction method and system based on an NLP technology. The method comprises the steps of preprocessing an unstructured text and segmenting the unstructured text into semantic segments; unsupervised clustering is combined with the contour coefficient to determine the optimal clustering number, and a semantic association fragment cluster is obtained; performing word segmentation, part-of-speech tagging, NER and entity linking on the fragment cluster, extracting an entity and initial relationship, and fusing semantic similarity, TF-IDF word frequency collaboration degree and co-occurrence frequency to calculate a relationship edge weight; constructing a lightweight knowledge graph; in the question and answer stage, questions are disassembled through a process engine, related sub-graphs are retrieved, and answers with reasoning links are generated. The system correspondingly comprises a text preprocessing module, a clustering module, an entity relation processing module, a graph construction module, a question and answer reasoning module and a storage module. According to the method, the construction cost is reduced, the interpretability and the module coupling degree are improved, multiple scenes such as government and enterprise public opinions and medical assistance are adapted, and the problems of weak generalization, poor real-time performance and'black box 'in the traditional technology are solved.

The invention discloses a full-length expanded-head anchor cable jet grouting reaming rapid construction process, which comprises the following steps: firstly, equipment is fully prepared and has strong pertinence, and a drill rod, a steel bearing body, a hydraulic extrusion sleeve and other parts act synergistically to ensure stable drilling of an anchor cable; secondly, surveying and setting-out are accurate, and accurate arrangement of anchor cable hole positions and real-time deviation correction of a drilling track are achieved by utilizing equipment such as a total station and a level gauge in combination with a drill rod inclination angle adjusting formula and a directional drilling track design formula; and finally, the staged drilling process is scientific and reasonable, primary drilling and secondary drilling are combined, a reaming method is flexibly selected according to different geological conditions, a hard stratum and a complex space environment are effectively dealt with, the hole forming quality is guaranteed, all links are tightly connected from equipment disassembly to high-pressure rotary guniting fluid back pulling to anchor cable tensioning and locking, and the drilling efficiency is greatly improved. And finally, stable anchoring of the anchor cable under complex geological conditions is achieved, and reliable prestress guarantee is provided for slope or foundation pit supporting.

The invention relates to the technical field of geological three-dimensional modeling, and discloses a mineral reserve estimation modeling method, system and equipment for optimizing block division. The method comprises the following steps: delineating an ore body according to imported drilling data, and establishing an entity model for estimating the ore body; block division is carried out on the entity model based on earth grid division or space grid division; converting the drilling data into block data according to the size of block division, and carrying out statistics on the block data to obtain a data distribution characteristic graph; calculating a variation function based on the data distribution characteristic graph and performing cross validation; and estimating according to the variation function and the block data, and outputting a resource reserve estimation report. Earth grid division is introduced, and during block division, longitude and latitude reference earth grid division and space grid division adopting a digital storage octree index can be selected, so that the storage speed is increased, the memory space is saved, the method adapts to multi-scale index transformation, data integration sharing and hierarchical management are facilitated, and the efficiency is improved. And rapid construction of the ore body and block subdivision storage are realized.

The invention provides a building waterproof roll construction method. The building waterproof roll construction method comprises the following steps that pre-paving waterproof construction is conducted on a base layer; performing waterproof construction on the basement side wall; and performing waterproof construction on the basement roof. The building waterproof roll construction method has the beneficial effects that roll waterproof construction can be conducted on a base layer, a basement side wall and a top plate, the construction process is reasonable, waterproof roll lap joints can be treated, the good waterproof effect can be achieved, waste of waterproof rolls is avoided, and in addition, the construction cost is reduced. The construction method strictly meets the requirements of construction specifications, rapid construction can be achieved, the construction efficiency is improved, the safety of constructors can be protected, and practicability is high.

The invention relates to the technical field of integrated bathrooms, and particularly discloses a modular integrated bathroom suitable for rapid construction, which comprises a bearing unit, a butt joint unit and a mounting unit, the bearing unit is used for being matched with a wall, the butt joint unit is used for corner parts where the bearing units are oppositely spliced, the butt joint unit is detachably connected to the bearing unit, the mounting unit is used for being matched with a water pipe, a valve and a water heater hanging piece, and the mounting unit is detachably arranged on the bearing unit. The length and the height of the wall body can be cut and adjusted according to actual space requirements to adapt to bathroom spaces of different sizes, the position of the bearing seat can be adjusted in a sliding mode, equipment such as a water pipe, a shower head and a water heater can be conveniently installed, extra cutting, punching or grooving is not needed, the construction difficulty is reduced, right-angle corner butt joint is achieved through the butt joint unit, and the construction efficiency is improved. The device adapts to different layouts and shapes of bathroom inner walls.

The invention provides an automatic construction method and equipment for a building electromechanical system circuit, and the method achieves the quick construction of a building electromechanical system and the efficient retrieval of key paths of equipment through abstracting the equipment attributes and the connection relation into a directed graph and automatically generating the connection relation between the equipment through a link prediction graph neural network model. The method can be used for automatically generating the mutual connection relation between the devices according to given device attributes, so that rapid construction of a building electromechanical system and efficient retrieval of key paths of the devices are achieved, and basic data are provided for the functions of device fault positioning, abnormal energy consumption analysis and the like in the building operation and maintenance stage. According to the method, the efficiency and accuracy of electromechanical system design are improved, reliable basic data support is provided for the functions of equipment fault positioning, abnormal energy consumption analysis and the like in the building operation and maintenance stage, meanwhile, a data link of electromechanical system design, construction and operation and maintenance is broken through, and technical support is provided for digital and intelligent transformation of the building industry.

The invention discloses a method and a system for quickly constructing a railway station structure engineering demand parameter matrix, which are characterized in that a time-history load function, a time-history load working condition and a ground acceleration of a railway station structure model are automatically created and set through a Python programming language on the basis of an application programming interface (API) opened by MIDAS Gen design software, and the time-history load function, the time-history load working condition and the ground acceleration of the railway station structure model are automatically established and set through a Python programming language. The method comprises the following steps of: firstly, carrying out time-history analysis on a plurality of key components, then carrying out elastic-plastic time-history analysis in batches, extracting a corner of a non-elastic hinge of the key components and interlayer acceleration of the floors, and finally, automatically assembling and forming an engineering demand parameter (EDP) matrix, so that the convenience and feasibility of shock resistance toughness evaluation of the railway station are remarkably improved.

The utility model discloses a dam back seepage monitoring drainage structure capable of being quickly constructed, which relates to the field of hydropower and hydraulic engineering, and comprises a channel, a dam, a dam drainage body and a pressure slope body, and further comprises a concrete connector, an impermeable layer, a measuring weir retaining wall and a permeable drainage channel, the lower portion of the permeable drainage channel penetrates into the relative impervious layer, the impervious layer is laid from the top of the dam drainage body slope to the downstream along the channel, the downstream is embedded into the measuring weir retaining wall, the two sides are embedded into the concrete connecting body, the permeable drainage channel is arranged below the impervious layer and arranged along the bottom of the channel, the upstream of the permeable drainage channel is connected with the dam drainage body, and the downstream of the permeable drainage channel reaches the front of the measuring weir retaining wall. The pressure slope body is filled above the impermeable layer and is filled along the channel, the upstream of the pressure slope body leans on the back of the dam, and the downstream slope toe reaches the front of the retaining wall of the measuring weir. A relatively closed anti-seepage structure is defined by combining the anti-seepage layer, the concrete connecting body and the relatively impervious layer, dam seepage and pressure slope seepage are separated, and the seepage flow of the dam can be accurately monitored; the measuring weir retaining wall structure can respectively monitor seepage of the pressure slope body and seepage of the dam, and the stability of the pressure slope body and the stability of the dam can be respectively evaluated.

The utility model relates to the technical field of pile foundation engineering, in particular to an offshore wind power steel pipe composite pile foundation synchronous and rapid construction system which comprises a self-elevating platform, the self-elevating platform comprises a supporting column and a platform, the bottom of the supporting column is arranged on the seabed, and the platform is supported by the supporting column. A plurality of steel pipe composite pile construction hole sites are formed in the platform, a rack with a rotary power head is arranged at each steel pipe composite pile construction hole site, and the racks are connected with steel pipes of steel pipe composite piles. The utility model has the advantages that: a plurality of steel pipe piles are adopted, stirring sinking is carried out simultaneously, the construction speed is high, steel pipe sinking, concrete pouring in the steel pipes, bearing platform construction and truss construction can be carried out in stages in a plurality of wind power foundations, and the overall construction efficiency is improved.

The invention relates to a method and a system for constructing a BIM model for quickly constructing a clustered medical building, and the method comprises the steps: constructing a thinking tree with multiple attributes based on design demands, carrying out the pruning in combination with a medical prototype library and compliance constraints, generating a DAG according to a leaf node task of the thinking tree after pruning, and carrying out the construction of the BIM model. The method comprises the following steps of: establishing a DAG (Distributed Acyclic Graph), endowing a DAG edge with an interdependent key level based on cluster linkage between tasks, forming a weighted DAG, determining task priority and resource allocation by a planning agent according to the weighted DAG, generating an execution sequence, processing the tasks by a BIM code generation agent according to the sequence, and generating a component code by adopting a thinking chain process of grading confidence coefficient scoring; at the end of each stage, calculating a confidence coefficient according to node attributes and medical geometric rules; and if the threshold value is lower than the threshold value dynamically adjusted based on the complexity of the cluster unit, adjusting and restarting the thinking chain. When the confidence coefficient is continuously too low or the key task cluster is completed, the check and correction agent intervenes, and the generated code is checked and corrected; and collecting the corrected codes to construct a BIM model.

The utility model discloses a quick building device for exhibition, which relates to the technical field of exhibition and comprises a building device, the building device comprises a main body mechanism, an upper baffle is mounted at the top end of the main body mechanism and connected with the main body mechanism through hexagonal fixing screws, and a clamping groove is formed in the top end of the main body mechanism. The device has the advantages that the mounting and dismounting efficiency of the device is remarkably improved, the building process is more convenient and faster, meanwhile, due to the design of the clamping groove formed in the top end of the main body mechanism, due to the design of the clamping groove formed in the top end of the main body mechanism, the mounting and dismounting efficiency of the device is improved, and the mounting and dismounting efficiency of the device is improved. The upper baffle can be firmly clamped to the top end of the main body mechanism, the stability and safety of the device are greatly improved, in addition, the upper baffle is installed at the top end of the connecting and fixing block through the supporting mechanism, the connecting stability of the whole mechanism is further improved, and the device is safer and more reliable in actual use.

The invention relates to a synchronous removal deep foundation pit for deeply burying large waste rafts in a sensitive environment and a construction method. Comprising a prefabricated assembly type trestle plate step-by-step reinforced concrete supporting trestle technical system, a steel casing and rapid prefabricated assembly type water collecting pit setting technical system, a waste bottom plate block-by-block breaking-first-cutting-crushing-dismantling technical system and a reserved pile filling hole position segment-by-segment block-by-layer backfilling technical system. The construction method has the beneficial effects that rapid construction of the reinforced concrete supporting trestle is achieved, the structural stability is guaranteed, and the construction efficiency is improved; high efficiency and quality control of construction of the stand column pile are achieved, meanwhile, the concrete over-filling amount is reduced, and the construction economical efficiency is improved; rapid setting and automatic management of the sump are realized, and the construction efficiency and the reliability of a drainage system are effectively improved; safe and efficient dismantling of the waste bottom plate is achieved, the construction precision is guaranteed, and the operation efficiency is improved.

The invention relates to a deep marine soft soil super-long steel pipe pile steel trestle and a construction method. The construction method comprises the following steps of setting angle steel sliding rail construction, qualitative steel pipe pile guide frame installation, hanging type safety operation platform installation, transverse connection welding, panel track laying and next section construction. The method has the beneficial effects that the qualitative steel pipe pile guide frame is adopted, accurate positioning of the position of the steel pipe pile can be achieved, and high efficiency and safety in the construction process are ensured; the shaped angle steel sliding rails and the panel rails are ingenious in design and have higher multifunctionality and practical value; the sleeve arranged at the end part of the crawler crane can ensure that the steel pipe pile can be accurately positioned, so that the construction error is reduced, and the safety and the construction efficiency in the driving process are favorably improved; the hanging type safe operation platform can be rapidly installed, the height can be adjusted, and the safety of constructors is guaranteed; the bailey beam combined limiting piece is simple in structure and convenient to construct quickly.

The invention provides a water delivery canal assembly and cast-in-place mixed rapid construction method which comprises the following steps that S01, a slope of a canal is excavated, and the width of the slope is larger than that of the canal; s02, an assembly type bottom channel is prefabricated, the assembly type bottom channel comprises a bottom plate, inclined webs are arranged on the two sides of the bottom plate, and the height of the webs is larger than that of accumulated water in the original water channel; s03, a cushion layer is laid at the bottom of the excavated water channel; s04, the assembly type bottom channel is hoisted; s05, the hoisting assembly type bottom channel of each section is subjected to sectional type continuous tensioning; s06, after construction of the fabricated bottom channel is completed, the side plates are constructed; s07, after construction of the water channel is completed, backfilling the outer side of the water channel, filling backfilling soil between the outer side of the water channel and the side slope, and compacting the backfilling soil; the rapid construction of the water channel is completed through the steps. By the adoption of the construction method of the assembly type bottom channel and the cast-in-place type side plates, construction can be conducted in accumulated water, the construction period cannot be affected in the rainy season, the side plates are constructed in the water-free state, and the balance between the construction efficiency and the cost is achieved.

The invention discloses a chamber supporting method and structure based on ultraviolet curing resin and a construction device. The construction method comprises the steps that a flexible ultraviolet light curing resin fiber belt is positioned at the bottom of one side of the inner wall of the chamber, and a fixing anchor rod is driven into the flexible ultraviolet light curing resin fiber belt for fixing; an arch-shaped support is installed, and a telescopic supporting mechanism is installed on the arch-shaped support in a sliding mode; the flexible ultraviolet light curing resin fiber belt is tightly attached to the inner wall of the chamber and is annularly unfolded along the inner wall of the chamber, and telescopic supporting mechanisms are adopted for supporting the flexible ultraviolet light curing resin fiber belt at certain intervals; tearing off a light-proof film on the flexible ultraviolet light curing resin fiber band, and irradiating the flexible ultraviolet light curing resin fiber band with ultraviolet light; and after the flexible ultraviolet light curing resin fiber belt is completely cured, the telescopic supporting mechanism is contracted, the arched support is removed, and construction of the chamber supporting structure is completed. The method has space adaptability, deformation coordination and rapid construction capacity, and efficient and stable supporting of the chamber is achieved.

The invention provides a three-step multi-working-face short-circulation weak-blasting step-pitch-control rapid construction method, which comprises the following steps of: dividing the section of a thin-layer schist tunnel into four parts, namely an upper step, a middle step, a lower step and an inverted arch, and carrying out excavation and support construction on the upper step, the middle step, the lower step and the inverted arch; by means of reducing the height of an upper step, jointly constructing short-step excavation, loose blasting and mechanical excavation, dynamically adjusting the combination of construction working faces and the like, it is guaranteed that thin-layer schist tunnel construction achieves the purposes of rapidly closing and forming a ring, reducing surrounding rock disturbance and improving construction safety and efficiency.

This invention provides a rapid construction device and method for the shaft wall of a reverse-construction pipe jacking shaft. It includes a ring-shaped rotating component, a driving component on one side of the rotating component to drive its rotation, multiple lifting components above the rotating component, and a casting template below the lifting components. This invention, by setting up the rotating component, driving component, lifting components, and casting template, forms a rapid construction device for the shaft wall of a reverse-construction pipe jacking shaft. This changes the conventional method of multiple material hoisting operations using cranes during reverse-construction shaft wall construction, reducing the number of hoisting operations, significantly shortening construction time, and greatly improving construction efficiency. It solves the problems of long construction time and difficult quality control associated with multiple material hoisting operations using cranes in conventional reverse-construction shaft wall construction.

A modular component dam. The dam may be configured for pairing with another dam in the form of a closed loop pumped storage hydropower plant. One or both of the dams may be constructed of buttress frames made up of prefabricated modules of predetermined varying dimensions which allow for rapid construction over a period of less than about a year. The modules may be transported to dam sites by standard transportation units such as 18 wheelers. This is facilitated by the modules occupying no more than about 14 feet in vertical height above a surface of a roadway during transport and no more than about 11 feet in horizontal width across the roadway during transport.

The invention discloses a cable assembly corrugated steel arch bridge and a construction method thereof.The arch bridge comprises foundations on the two sides and a corrugated steel arch shell structure arranged between the foundations in a spanning mode, a corrugated steel arch shell is composed of at least two corrugated steel arch rings arranged in the bridge width direction, and each corrugated steel arch ring is composed of a plurality of corrugated steel arch plates which are sequentially spliced in the arch direction; each corrugated steel arch plate comprises connecting side plates on the periphery and a steel corrugated plate located in the connecting side plates, a plurality of transverse connecting components are arranged on the steel corrugated plate in the width direction, and the transverse connecting components are fixed to the steel corrugated plate and extend out of the connecting side plates in the bridge width direction, so that the transverse connecting components of the adjacent corrugated steel arch rings are connected in the bridge width direction; and an integral corrugated steel arch shell structure is formed. According to the construction method, the supporting towers are arranged on the two sides of the valley, the valley-spanning main cable is tensioned, the end arch sections and the middle-span arch plates are hoisted in a blocking mode in cooperation with the cable-stayed maintaining system, symmetrical assembling is conducted, and the construction method is suitable for rapid construction of the deep valley corrugated steel arch bridge with the complex terrain.

The invention discloses an angle-adjustable steel supporting structure which comprises a steel enclosing purlin horizontally arranged on a steel sheet pile on the inner side of a foundation pit; the steel support is arranged between the steel enclosing purlins on the two sides; the adjusting seats are arranged at the two ends of the steel support; the adjusting seat comprises a fixed seat and a movable seat, the fixed seat is connected with the steel enclosing purlin, the movable seat is rotationally connected to the fixed seat through a hinge shaft, a plurality of layers of arc-shaped adjusting pipes are arranged on the movable seat, an adjusting rod connected to the adjusting pipes in a sliding mode is arranged on the fixed seat, and a U-shaped locking rod is vertically connected to the adjusting pipes in an inserted mode; the adjusting rod is provided with a locking hole for the locking rod to penetrate through. The steel support has the following advantages and effects that the angle-adjustable adjusting seats are arranged at the two ends of the steel support, the included angle between the steel enclosing purlins on the two sides is made up, the steel support can be stably connected with the steel enclosing purlins through the adjusting seats, brackets do not need to be welded or cushion blocks do not need to be installed, rapid construction of the steel support is guaranteed, and the construction efficiency is improved.

The invention relates to the technical field of building material preparation, and discloses an aluminate material compounded alkali-free accelerator which comprises the following components in parts by mass: 6-12 parts of an aluminate-based material, 4-10 parts of a sulphoaluminate-based material, 8-18 parts of a regulator, 20-40 parts of aluminum sulfate and 50-70 parts of water, the preparation method comprises the following steps: sequentially adding the sulphoaluminate-based material, the aluminate-based material, the regulator and the aluminum sulfate, and carrying out multi-stage stirring. When the mixing amount of the prepared accelerator is 6%-8% of the mass of cement, the initial setting time is 120-180 seconds, the final setting time is 200-300 seconds, the strength in 6 hours is larger than or equal to 1.1 MPa, and the strength in 1 day is larger than or equal to 9 MPa. According to the formula, the setting performance and strength development of the accelerator are optimized, the adaptability and construction efficiency of cement are improved, the problems that a traditional accelerator is poor in adaptability, long in setting time and slow in strength development are solved, and the requirements for rapid construction and high strength are met.

The invention discloses a numerical control machine tool twin model moving body general construction and expression method, and belongs to the technical field of machine tool digital twin modeling, and the method comprises the following steps: constructing a numerical control machine tool assembly geometric model, and carrying out the splitting and lightweight processing of the model; determining the motion characteristics of each part of the machine tool and the relative motion relation among the parts, and performing over-mapping processing on the geometric model and the motion characteristics; constructing a machine tool twin model topology file comprising geometric features, motion features, state features and physical motion rules; and importing the three-dimensional model of the machine tool and the topological file into a three-dimensional engine, quickly constructing a twin model mapping a physical entity of the machine tool in an information space, and carrying out visualization processing. According to the method, the geometric features, the motion features, the physical motion rules and the like of the numerical control machine tool are uniformly expressed, so that the multi-axis numerical control machine tool twin model moving body in any structural form is quickly constructed.

The invention relates to the technical field of civil engineering materials, in particular to a cement-based composite coiled material for emergency rescue and a rapid construction method.The cement-based composite coiled material for emergency rescue comprises a stereoscopic three-dimensional structure fabric and hydraulic cement-based filler, the stereoscopic three-dimensional structure fabric is filled with the hydraulic cement-based filler, and the hydraulic cement-based filler is arranged in the stereoscopic three-dimensional structure fabric. One side of the bottom of the three-dimensional structure fabric further comprises a waterproof wear-resistant coating; the hydraulic cement-based filler is prepared from the following components in parts by weight: 30 to 45 parts of high belite sulphoaluminate cement, 10 to 20 parts of ordinary Portland cement, 10 to 15 parts of fly ash, 5 to 8 parts of alpha-semi-hydrated gypsum, 3 to 5 parts of an expanding agent, 0.5 to 1.5 parts of a polycarboxylic acid type water reducing agent, 25 to 35 parts of silica sand and 0.1 to 0.8 part of a thickening time control agent. The prepared cement-based composite coiled material for emergency rescue has good tensile property, and the prepared cement-based composite coiled material meets the one-day compressive strength gt; the 28-day compressive strength is gt; the pressure is 65 MPa; the one-day tensile strength is gt; 3.5 MPa, 28-day tensile strength gt; and the performance index requirement of 5.5 MPa is met.

The present invention provides a fully prefabricated and assembled bridge, characterized in that: from top to bottom, the bridge successively includes main girders, cap beams, bridge piers, pile caps, and pile foundations, all of which are constructed by means of factory prefabrication and on-site assembly. Among them, the main girders and the cap beams are connected by bearings, and the cap beams and the bridge piers are connected by a connecting device composed of cap beam embedded steel plates, cap beam cast steel parts, pier top column surface sliding plates, pier top cast steel parts, pier top embedded steel plates, pier top steel bars, and pier top nuts. The bridge piers and the pile caps are connected by a connecting device composed of pile cap embedded parts, pier bottom embedded parts, pier bottom steel bars, and pier bottom nuts. The pile caps and the pile foundations are connected by bearings. The present invention has clear force transmission and convenient construction, realizes the full prefabrication, assembly, construction, and demolition of the bridge structure, and can be widely applied to the rapid construction and demolition projects of bridges.

The invention belongs to the technical field of underground gas storage, and particularly relates to an energy-storage and hydrogen-storage modified asphalt slip layer for an underground rock cave and a preparation method of the energy-storage and hydrogen-storage modified asphalt slip layer. The modified asphalt slip layer disclosed by the invention has a lubricating effect, and can promote interlayer slip between structures and reduce the friction resistance of the contact surface of the concrete lining and the steel lining, so that the tensile stress of the steel lining is reduced, and the fatigue damage of the steel lining of a sealing layer caused by frequent inflation and deflation is relieved. Wherein through the modification of the styrene-butadiene-styrene block copolymer, the slippage layer has higher durability; the long-fiber polyester felt base cloth and the talcum powder are used, so that the thickness of the slip layer is increased and can reach 5-6 mm; and the viscosity of the slip layer is increased by using the hot melt adhesive, so that the slip layer can be quickly adhered to a structure to realize quick construction. An effective solution is provided for reducing fatigue damage and deterioration of the sealing layer steel lining and guaranteeing the sealing performance of the underground rock tunnel energy storage and hydrogen storage facility, and the method is suitable for large-scale application and popularization.

The invention discloses a straight rib feeding and conveying mechanism, and relates to the technical field of tunnel construction. The feeding assemblies are arranged on the two sides of the trolley; the material receiving assembly comprises a plurality of material receiving and conveying devices which are sequentially arranged at intervals in the axial direction of the tunnel, and each material receiving and conveying device comprises an upper arc-shaped conveying chain and a lower arc-shaped conveying chain which are distributed up and down; the feeding assembly is located between the upper arc-shaped conveying chain and the lower arc-shaped conveying chain. A single straight rib output by the feeding assembly is located in a hooking path of a material receiving hook in the upper arc-shaped conveying chain and conveyed upwards along the outer side of the upper arc-shaped conveying chain. A single straight rib output by the feeding assembly can fall into the lower arc-shaped conveying chain connecting material hook and is conveyed downwards along the outer side of the lower arc-shaped conveying chain. By the adoption of the scheme, conveying can be achieved through the trolley, a plurality of straight ribs can be sequentially arranged in the side wall direction of the tunnel through the arc-shaped conveying chain, rapid construction is facilitated, and the construction efficiency is improved.