52results about How to "The construction method is reasonable" patented technology

Disclosed are a block type wall system assembled by hoisting and a construction method thereof. Multiple prefabricated wall board blocks are assembled into a whole, each prefabricated wall board block is provided with a reinforcing mesh concrete layer and a heat insulation layer outside in sequentially, the reinforcing mesh concrete layer consists of a structural layer and an outer surface layer disposed on the outer surface of the structural layer, four edges of the outer surface layer are protruded from four edges of the structural layer, the lower surface of the structural layer is provided with inner reinforcing bar holes corresponding to vertical long reinforcing bars on the lower adjacent prefabricated wall board block, and the heat insulation layer comprises external nonorganic boards, internal nonorganic boards, vertical nonorganic rib plates and fireproof heat insulation rock wool. The wall system is light in weight, simple in structure, convenient in installation and capable of realizing industrialized production. The wall system utilizes the external wall and internal heat insulation structure, the specially-made heat insulation layer and the concrete structural layer are connected quite closely and tightly, and the heat insulation layer is located on the innermost side, so that the probability of wetting due to seepage is reduced greatly.

The invention discloses a preparing method for a profile steel concrete column for an urban mass transit elevated railway station. The method comprises the following steps that steel or a steel plate is prepared and used for preparing a first profile steel part, and a plurality of hole positions for penetrating are formed in a first web; locating welding is carried out on the first web and a first wing edge plate so that a first profile part can be formed; a second profile steel part and a third profile steel part are prepared; the second profile steel part and the third profile steel part are assembled at the two opposite sides of the first wing edge plate of the first profile steel part respectively to form a cross-shaped steel column; bolt screws are welded to the first profile steel part, the second profile steel part and the third profile steel part respectively. The invention further discloses the profile steel concrete column for the urban mass transit elevated railway station. By applying the profile steel concrete column for the urban mass transit elevated railway station and the preparing method thereof, the profile steel concrete column has good pressure bearing performance, is high in deformation ability, resists fatigue, and is good in impact resistance; the requirements for structural safety and project economy are met, and feasibility and working procedure arrangement of site construction are involved.

The invention provides a coal engineering hole directional drilling method, which mainly solves the problems of low drilling precision and complex procedure of the conventional directional drilling method. The directional drilling method is characterized by comprising the following steps of: 1, designing a drilling trace: designing the drilling trace and drilling parameters according to the requirement of engineering drilling; 2, determining special equipment, machines and devices which are required by the engineering, and combining the drilling equipment according to the requirements of all drilling stages; 3, constructing according to the trace and the parameters which are designed in the step 1, measuring the finished drilling trace by using an inclinometer after one stage is finished, analyzing whether data is the same as the designed trace, and expecting the next trace tendency; and 4, performing error correction design if error correction is needed to be performed in the step 3, repeating the content in the step 2, and cycling until the drilling is finished; and if error correction is not needed in the step 3, continuing to drill the next hole section until the drilling is finished. The coal engineering hole directional drilling method has the characteristics of high drilling precision, simple procedure, smooth drilled holes and contribution to the next work of drilling.

The invention discloses a method for optimizing tunnel construction based on improved Topsis method which includes the following steps: step selection method, three-pilot method, middle pilot method,CRD method of main tunnel and annular excavation reserved core soil method of main tunnel are used in this paper. According to the five selected tunnel construction schemes, the following eight indexes are selected to establish the evaluation index system: surrounding rock engineering geological conditions, vault settlement, surface settlement, inverted arch uplift, Great Wall settlement, engineering progress, engineering cost and local inclination ratio of Great Wall. AHP method is used to determine the subjective weight Omega _ 1, information entropy method is used to determine the objective weight Omega _ 2, and game theory aggregation model is introduced to determine the comprehensive weight. The improved Topsis method is used to eliminate the calculation errors caused by different units. Grey relational grade is adopted to improve the sticking progress. On the basis of ensuring the safety of the Great Wall in the construction process, the invention selects a more reasonable construction method to maximize the engineering income.

The invention relates to an excavation and surrounding rock stress and strain monitoring model testing device for a rock-soil chamber under complicated conditions, and a method thereof. Four stand columns with L-shaped cross sections are arranged at four corners of the upper surface of a substrate, pressure plates capable of moving horizontally are arranged between adjacent L-shaped stand columns to form a cuboid cavity which is filled with rock-soil test samples. The testing device has the technical effects that the stress, strain and volume change rules of the chamber surrounding rock when a rock-soil chamber is excavated under the complicated conditions of high pressure, high temperature and the like, so that the model testing device can provide scientific base for the design and construction decision of the chamber, and also provides a theoretical basis for the prevention and control of geological disaster during the chamber construction.

The invention discloses a building roof construction process. A construction roof comprises a roof structure plate, a parapet wall and a roof surface layer, wherein the parapet wall is arranged above the roof structure plate, the roof surface layer is paved on the roof structure plate, a roof exhaust system is arranged on the construction roof and comprises a plurality of first horizontal exhaust pipes, the first horizontal exhaust pipes are respectively laid in a slope finding layer or a heat insulation layer in the roof surface layer, two ends of each first horizontal exhaust pipe are respectively connected with a vertical exhaust pipe, and the vertical exhaust pipes are embedded in the side walls of the parapet wall and a discharge flue or the side wall of an exhaust passage. The construction process of a construction roof comprises the steps of 1, surveying and setting out; 2, parapet wall, discharge flue and exhaust passage construction; 3, horizontal exhaust pipe positioning installation; 4, exhaust pipe connection; 5, roof surface layer construction; and 6, rigid protecting layer mesh division and caulking construction. The construction process has the advantages that the steps are simple, the operability is high, the realization is convenient, in addition, the work efficiency is high, the construction effect is good, and the construction quality of the construction forming building roof can be effectively ensured.

The invention relates to a construction method for a buckling-restrained brace structure. Buckling-restrained braces are located in a frame structure composed of beams and columns. The construction method comprises the following steps that firstly, construction preparation is conducted; secondly, embedded parts are installed; thirdly, joint plates are installed, including determining of the size of the joint plates and blanking of the joint plates; fourthly, the buckling-restrained braces are transported, including transporting of the buckling-restrained braces in the vertical direction and the horizontal direction; fifthly, the buckling-restrained braces are hoisted and connected; sixthly, connecting joints are checked; and seventhly, corrosion prevention and fire prevention coating is conducted. The technical problems that in a traditional construction method, the requirement for a construction plant is high, the construction period is long and the safety quality is low are solved.

The invention belongs to the field of mineral substance cable installation and laying of mechanical and electrical installation inside subway stations, and specifically relates to a mineral substance insulated cable factory-like pre-configuration processing method based on a BIM technology. The method overcomes the defects of mineral substance insulated cables in the processing and site installation process. The method comprises the following steps: actual measurement of site three-dimensional space of a subway station, station modeling, full-profession pipeline optimization, mineral substance cable circuit arrangement sequence determination, mineral substance cable intermediate connector position determination, subsection cable work amount and total circuit work amount of mineral substances according to BIM model output, and two-dimensional information code information installation according to a mineral substance cable circuit. The labor cost and construction cost are effectively reduced, the material utilization amount of mineral substances is reduced, the construction period is reduced, a more reasonable construction method is provided, and simultaneously compared with original construction blueprint, the maintenance space is more sufficient, the overhaul and later operation maintenance are facilitated, and the method is high in practicability and beneficial for popularization.

The invention discloses a connecting structure of an assembly type underground structure vertical member. The connecting structure comprises an upper component and a lower component which are connected in a mortise joint manner, and a plurality of sleeves are arranged in the lower component and close to the joint. An upper side steel bar is arranged in the upper component, at the position corresponding to each sleeve, and one end of the upper side steel bar extends into the sleeve. The connecting structure of an upper side steel bar inserting into a sleeve and the mortise connecting structureare combined, so that the bearing limitation of a simple mortise joint structure is overcome. Secondary pouring of concrete is avoided, the construction period is shortened, and the pollution to the environment is reduced.

The invention discloses a method for beyond-limit arch replacing construction during preliminary bracing of a large-section loess tunnel. The method includes the steps of firstly, conducting radial grouting reinforcement on an arch wall, wherein radial grouting reinforcement is conducted on an arch replacing required section where arch replacing is required in the constructed loess tunnel from back to front; and secondly, conducting arch replacing construction, wherein a reinforced preliminary bracing structure in the arch replacing required section is detached, and preliminary bracing construction is conducted on the arch replacing required section synchronously in the detaching process. The method is simple in step, reasonable in design, simple in construction and good in use effect; theradial grouting reinforcement is conducted on the arch wall to reinforce the arch wall of a tunnel hole first, so the structural stability of the tunnel in the arch replacing process is ensured; segmented reinforcing is conducted on the preliminary bracing structure of the tunnel through a plurality of sleeve arch units for a reinforced sleeve arch in the arch replacing required section, so detaching is convenient; and moreover, the sleeve arch units are complementary and together improve the supporting force, so the adverse effects on the structural stability of the tunnel in the detaching process of each sleeve arch unit can be effectively reduced, and the safety and reliability of the arch replacing construction process are ensured.

The invention relates to an urban building sewage treatment system, a construction method and a filter element material preparation process. The urban building sewage treatment system comprises a settling basin, a split well, a distributing well, a sewage intercepting well, a reservoir, a fine filtration device, a sterilization device and a clean water basin, the side face of the settling basin is provided with a water inlet pipe allowing building rain sewage to flow into conveniently, and the clean water basin is internally provided with a clean water recycling device. The urban building sewage treatment system is reasonable in design, reutilization of sewage is achieved, and the water quality of reuse water is effectively guaranteed.

The invention discloses a section steel and concrete combined column of an urban rail transit overhead station. The urban rail transit overhead station is applied on bridge structures and building structures combining bridges with buildings and comprises bearing platforms, the section steel and concrete combined columns and frame cross beams, each section steel and concrete combined column comprises a section steel column, constructional rebars, stirrups and a concrete wrapper, the constructional rebars and the stirrups are arranged on the periphery of the section steel column, each concrete wrapper wraps the outside of the corresponding section steel column, the corresponding constructional rebars and the corresponding stirrups, each section steel column comprises a first section steel portion, a second section steel portion and a third section steel portion, and a second web of each second section steel portion and a third web of the corresponding third section steel port are connected with two opposite sides of a first web of the corresponding first section steel portion respectively. The invention further discloses the urban rail transit overhead station. The section steel and concrete combined column has good pressure bearing performance and is high in deformation capability, resistant to fatigue and good in impact resistance, can meet structural safety and engineering economy and relates to feasibility and process arrangement of site construction.

The invention discloses a BIM-based rockery modular construction method and device and a storage medium, and the method comprises the steps: building a rockery comprehensive BIM model, carrying out the modular splitting of the rockery comprehensive BIM model to obtain a plurality of region modules, marking the region modules, and carrying out the rechecking and optimization of the primary and secondary structures of the rockery comprehensive BIM model, generating a two-dimensional code of each region module of the primary and secondary structures of the rockery according to an optimization result, performing dynamic construction simulation on the comprehensive BIM model of the rockery by utilizing the two-dimensional codes to generate a dynamic construction model, and sending the two-dimensional codes of the primary and secondary structures of the rockery to a factory to be processed into rockery modules; and completing field installation of the rockery module by utilizing the two-dimensional code information and the dynamic construction model. According to the method, the rockery components are modularly disassembled through the BIM technology, the field installation difficulty isreduced, the technical support is provided for field rockery assembly through the two-dimensional codes, the high-altitude operation is reduced, meanwhile, all professional construction procedures can be reasonably arranged through animation simulation, and the efficiency is higher.

The invention discloses a non-span-reduction construction method for a close-spaced underpass operating railway for a loess tunnel with an oversized cross section. The method comprises steps as follows: firstly, the influence range of the underpass operating railway for the loess tunnel with the oversized cross section is divided into three support grade areas including an I area, an II area and an III area, then construction of a pipe shed working chamber, construction of a pipe shed, backfilling of the pipe shed working chamber and reinforcement by advanced small pipes are performed in sequence, and finally, a three-step and two-step temporary inverted arch method is adopted for hole body excavating and supporting. According to the method, equipment passes through the underpass operatingrailway area safely and rapidly, construction cycle is shortened, cost input is reduced, safety, economic efficiency and reasonability are combined, reference is provided for construction of the sametype of close-spaced underpass operating railway for the loess tunnel with oversized cross section, and construction efficiency of the close-spaced underpass operating railway for the loess tunnel with oversized cross section is further increased, and safety risks of the construction are reduced.

The invention discloses a rapid pushing and replacing construction method for a ballastless track structure of a passenger special line. The method comprises the process of renovating a disease area by adopting a detachable inverted arch structure. The process is divided into three stages of a preparation stage, a key stage and a recovery stage. The key stage at least comprises the steps of chiseling away grooves and roadbed slabs in a segmented mode, erecting temporary steel beams, laying wooden sleeper track panels, excavating a bottom of a tunnel, disassembling and replacing inverted archesand filling layers, carrying out end prestress anchoring and reinforcing, and carrying out roadbed pouring. In the process of chiseling away the grooves and track plates in the segmented mode, the track plates are pushed out of the grooves in a segmented and blocked mode, construction efficiency is high, a speed is high, and safety is good; and construction skylight is used for operation and railway operation line construction, influences of factors such as traffic safety, construction boundaries, technological processes and the like are considered, and the construction method and steps are reasonable in arrangement.

The invention discloses a test device for a cavern body excavation model. The test device comprises a base, a sample arrangement mechanism, a test system and at least one upper computer. The sample arrangement mechanism is composed of stand columns vertically and fixedly connected with the base, pressure plates inserted between the stand columns and forming a cuboid cavity, and a pressure device or a counter-force device arranged on the outer sides of the pressure plates. The testing system comprises a steel wire pressure box and a resistance strain gauge which are arranged on a pre-excavatedsection; an upper computer used for receiving output signals of the steel wire pressure box and the resistance strain gauge, and the upper computer forms cavern body excavation stress and strain dataaccording to data changes generated by the steel wire pressure box and the resistance strain gauge. According to the device, chamber excavation of various section forms can be carried out in rock-soilbodies with different properties by adopting different construction methods, so that a reasonable, safe and efficient construction method can be selected in chamber excavation of rock-soil bodies with different properties.

The invention discloses a construction method for repeated pile-sinking of an inner pile casing. The construction method includes the following steps that a dismantling drill bit and a dismantling drilling rig are lifted, and the drilling rig is lifted to a deck and tied firmly; a pile stabilizing platform is lowered, and then the pile stabilizing platform is re-leveled; an S2000 hydraulic pilinghammer is used for pile-sinking of the inner pile casing, the inner pile casing is continuously driven downwards, and the perpendicularity of the inner pile casing is measured and adjusted at any timein the construction process; and after the pile-sinking of the inner pile casing, the drilling rig is reinstalled and debugged for hole drilling. The construction method is reasonable and simple. First, the pile stabilizing platform is lowered, then the inner pile casing is subjected to repeated pile-sinking by the S2000 hydraulic piling hammer, and the perpendicularity of the inner pile casing is measured and adjusted at any time in the construction process, so that the inner pile casing is steadily subjected to pile-sinking and the depth of the inner pile casing into mud is ensured, and thestability is greatly improved.

The invention relates to a construction method for non-excavation horizontal directional drilling of underneath passing an existing railway. The construction method comprises the following steps that S1, surveying and setting out are conducted, specifically, a total station is used for setting out the center line of a pull pipe; S2, foundation pits are excavated, specifically, the foundation pits are excavated in the two sides of the existing railway; S3, drilling machines are arranged, specifically, the drilling machines are arranged in the working pits; S4, guiding drilling is conducted, specifically, after the drilling machines are arranged, guiding rods of the drilling machines are adjusted to the positions higher than the center elevation of the designed pipe position, and the drilling machines horizontally drill into soil; S5, chambering is conducted, specifically, after guiding drilling holes drill into receiving pits from the working pits, guiding drill bits are dismounted, and then back-expanding heads are mounted for repeated chambering; S6, pipelines are welded, specifically, the pipelines are fixed, and then hot melting butt joint is conducted; S7, the pipe is pulled, specifically, pipe heads of PE pipes are sealed through PE pipe sealing sleeves, then the back-expanding heads are connected to the rear ends of the pipe heads, and then the pipe is pulled; and S8, the foundation pits are backfilled, specifically, after construction is completed, the working pits are backfilled with fine soil. The construction method has the effects that the cost is saved, and the construction period is shortened.

The invention relates to rail top air port modification for subway stations. According to the modification, air port louver windows are arranged on the lower sides of rail top air channel air ports and the upper ends of overhead line systems, an up and down rail running area is divided into four identical areas according to the station starting point, the station center line and the station terminal point, one of the four areas starts from the up starting point to the station center line, the subway rail top air channel air ports are located right above the overhead line systems of the rail running area, and the construction method needs to be reasonable and reliable due to the special position. Installing and debugging of the rail top air channel pull plate type air ports of the stations of double-layer island type structures are introduced in the article; compared with other installing modes, the installing mode of the pull plate type air ports has the advantages that installing is reliable, debugging is convenient and the safety is higher though the direct economic value is not obvious and is innovative for installing of rail top air channel air ports.