127results about How to "Easy assembly and construction" patented technology

The present invention relates to a partial corrugated steel web prestressed steel-concrete continuous composite box-girder. The concrete roof plate is permanently connected with the steel box-girder through a connecting plate and a shear connector. In the steel box girder the steel diaphragm plates are installed respectively corresponding to each fulcrum. The whole steel box-girder is composed of a structural negative monument area segment and the structural positive moment area segment arranged at two ends. The concrete roof plate of the structural negative moment area segment is stretched with a longitudinal prestressed rib. A longitudinal stiffening rib is arranged in the steel baseboard. The web plates at two sides of the steel box-girder in the structural negative moment area are corrugated steel webs. The web plates of the steel box-girder in the structural positive moment area steel box-girder are plane steel web plate. The invention can overcome the problems of low efficiency of longitudinal pre-stress of negative moment area in the continuous composite box-girder and corrugated steel web PC composite box-girder, easily destabilization of the plane steel web plate or more arrangement of the longitudinal prestressed rib inside or outside the box-girder and complex construction and the like. The invention has broad applying prospect in the bridge engineering and long-span structure.

The invention relates to the field of pipeline construction and discloses a buried pipeline construction method. A pipe ditch pipeline transfer frame can be assembled on a construction site, the occupied area is small, site limitation is avoided, and construction can be carried out on a site where a large crane cannot arrive. At least two n-shaped frames are adopted for hoisting together, hoisting of long pipelines is facilitated, a space used for holding the pipelines is reserved between a base and a pipe ditch, thus splicing and corrosion resistant treatment of a very large part of pipelines can be conducted on the ground, operation difficulty is lowered to a large extent, construction efficiency can be improved, and a good protection effect can be achieved on finished pipelines. Compared with the prior crane hoisting mode, the buried pipeline construction method is good in hoisting stability and precision, easy assembly construction is ensured when the pipelines are put down to the ditch bottom, construction quality is greatly improved, and site construction can reduce mechanical machine-team cost and can also lower safety risk greatly.

The invention discloses a large span steel tube arch bridge stents-free hoisting process, the large span steel tube arch bridge is the tied-arch bridge formed above the river and the bridge superstructure comprises arch ribs and a tie bar connected between two arch feet of the arch rib, a stiff skeleton is formed in the tie bar; the stents-free hoisting process for the large span steel tube arch bridge is as follows: 1, assembling the single arch rib with the stiff skeleton of the tie bar on the ground, on the assembling field at the bank side of one side of the river, assembling the arch steel tube stent of the arch rib with the stiff skeleton of the tie bar and obtaining the assembled single piece bridge superstructure; 2, integrally hoisting and positioning the single piece arch rib and the stiff skeleton of the tie bar; adopting floating crane shift platform for hoisting the assembled single piece bridge superstructure and transporting the structure to the bridge lower support structure. The large span steel tube arch bridge stents-free hoisting process is simple in technology process, reasonable in design, convenient in construction and good in construction effect; the large span steel tube arch bridge stents-free hoisting process can be finished simply and quickly, and the hoisting process is safe and reliable.

A modifiable structural assembly comprising an active material based insert positioned within a hollow structural member, wherein the insert defines a first insert dimension, is configured, when activated, to change the first insert dimension to a second insert dimension, and selectively achieving the first or second dimension facilitates positioning the insert, or changes a characteristic of the assembly, such as the stiffness, damping effect, or energy absorption rate, once the insert has been positioned.

The invention discloses a construction process of a large-span steel tube arch bridge without supports. The constructed large-span steel tube arch bridge is a tied-arch bridge erected on a river channel. A bridge upper structure of the tied-arch bridge comprises arch ribs and tie bars connected between every two arch pins of the arch ribs. Rigid frameworks are arranged in the tie bars. The construction process includes the following steps of firstly, splicing the single-piece arch ribs and the rigid frameworks of the tie rods on the land, wherein arch-shaped steel tube supports of the arch ribs and the rigid frameworks are spliced on a splicing field on a bank side of the river channel; secondly, hoisting the single-piece arch ribs and the rigid frameworks of the tie rods together and placing the arch ribs and the rigid frameworks in place; thirdly, constructing the arch ribs through concrete, wherein the arch pins and end beams are constructed, and concrete is symmetrically pressed and poured for the arch ribs; fourthly, conducting pouring through a tie rod concrete suspended form method; fifthly, installing middle beams. The construction process is simple in process step, reasonable in design, convenient to construct and good in construction effect; the construction process of the large-span steel tube arch bridge without supports can be easily, conveniently and rapidly completed without greatly influencing the navigation of the river channel.

The invention discloses an energy dissipation and shock absorption assembly type infilled wallboard structure. The energy dissipation and shock absorption assembly type infilled wallboard structure comprises a wallboard, the wallboard is a rectangular wallboard, the wallboard comprises two L-shaped sub-wallboards with the same size and shape; the horizontal contact interfaces of the two L-shaped sub-wallboards are filled with damping layers and are connected with each other through a bending deformation energy dissipation device in the plane of a steel plate; and the vertical contact interfaces of the two L-shaped sub-wallboards are located in the middle of the wallboard, impact buffer layers are fixedly arranged on the vertical contact interfaces correspondingly, and the space between theimpact buffer layers is filled with flexible filler. The energy dissipation and shock absorption assembly type infilled wallboard structure is provided with different levels of energy dissipation structures, the wallboard structure has the shock absorption and energy dissipation effects under the action of small earthquakes, medium earthquakes and large earthquakes; the wallboard structure has good deformation ability, the wallboard can be effectively prevented from being damaged under the conditions of small earthquakes and medium earthquakes; and the wallboard structure can play a supporting role under the condition of large earthquakes to prevent a wall body from collapsing.

The invention discloses an assembly type pavement structure and a construction method, and aims to effectively improve the connection safety, the adjustment capability and the repairable capability of a prefabricated pavement, facilitate the manufacturing and transportation of the prefabricated pavement, and facilitate the assembly, repair, replacement and construction. Prefabricated pavement slabs are assembled on a roadbed to form an assembled pavement, each prefabricated pavement slab is of a prestressed reinforced concrete structure, longitudinal lower grooves are formed in the two longitudinal connecting ends of each prefabricated pavement slab at intervals in the width direction, and transverse lower grooves are formed in the two transverse connecting ends of each prefabricated pavement slab at intervals in the width direction. Rod-shaped connecting components are arranged in the corresponding longitudinal lower grooves or the corresponding transverse lower grooves of every two adjacent prefabricated pavement slabs. An isolation layer is laid on the surface of the roadbed, after the assembled prefabricated pavement slab is leveled, self-compacting concrete is densely poured into a gap between the laid isolation layer and the prefabricated pavement slab to form an adjusting layer, and positioning bosses which protrude upwards and are embedded into longitudinal lower grooves and transverse lower grooves of the prefabricated pavement slab are formed on the adjusting layer.

The invention relates to an environment-friendly atmospheric pressure wood assembly adhesive which comprises a component A and a component B, wherein the component B is a cross-linking agent; the component A is prepared from the following raw materials in parts by weight: 3-5 parts of polyvinyl alcohol, 20-40 parts of a polyvinyl acetate emulsion, 20-40 parts of a vinyl acetate-ethylene copolymerization emulsion, 0.3-0.5 part of a pH buffer agent, 0.1-0.3 part of nano particles, 0.05-0.2 part of a dispersing agent, 0.1-0.3 part of an antifoaming agent, 0.1-0.5 part of a preservative, 0.1-0.5 part of a wetting agent, 0.1-0.5 part of a flatting agent and 20-30 parts of water. The used polymer and auxiliary ingredients belong to chemicals which are low in toxicity, friendly to environment and beneficial to clean production; the environment-friendly atmospheric pressure wood assembly adhesive does not contain harmful components such as formaldehyde, and is an environment-friendly adhesive.

The invention discloses a fabricated concrete box retaining wall and construction method thereof. The fabricated concrete box retaining wall comprises a cast-in-situ foundation and a wall body arranged on the cast-in-situ foundation, concave string-shaped grooves are formed in the upper surface of the cast-in-situ foundation, the wall body is of a multiple-layer structure, each layer of the wall body comprises a plurality of prefabricated concrete box single bodies, the end parts of the two adjacent prefabricated concrete box single bodies in a single layer wall body are connected through side wall clamping blocks, compared with a traditional gravity retaining wall, according to the fabricated concrete box retaining wall, hollow concrete boxes are filled with waste soil stone materials, masonry or concrete cubic amount is reduced about 40 %, the cubic meter of earth and stone waste in engineering is utilized reasonably, the waste cubic of engineering is reduced, the engineering cost can be reduced over 15 %, the smallest assembling unit of the fabricated concrete box retaining wall is the prefabricated concrete box single bodies, all the prefabricated concrete box single bodies are the same in size, standardized production is facilitated, assembling construction is convenient, and the field construction period can be lowered over 30 %.

The invention discloses a bearing-socket type prefabricated pier connecting structure. The structure comprises a prefabricated pier body and a bearing platform, a bearing platform groove is formed inthe bearing platform; a plurality of bearing platform reserved steel bars arranged in the vertical direction are pre-buried in the bearing platform. The prefabricated pier body sequentially comprisesan exposed end, a bearer and an embedding end from top to bottom. The bearer is provided with a plurality of steel bar inserting grooves matched with reserved steel bars of the bearing platform in thecircumferential direction. The free ends of the plurality of bearing platform reserved steel bars are respectively inserted into the steel bar inserting grooves; the outer wall of the embedded end isprovided with a plurality of annularly-protruding stand column shear keys. The embedded end is embedded into the groove of the bearing platform; the lower surface of the bearer is placed on the uppersurface of the bearing platform; grouting materials are poured into the steel bar inserting grooves and the bearing platform grooves. The volume of the grouting material can be adopted to calculate the pouring amount of the grouting material, a gap between the bearing platform and the prefabricated pier body is large, the phenomenon of non-fullness does not exist, splicing construction is easy, the construction error-tolerant rate is high, and the defects that in the prior art, potential safety hazards exist, and the grouting fullness degree is not easy to check can be overcome.

The invention discloses a tensioning device and method for applying a prestressing force to a high bending moment prestressed concrete electric pole. A pull shaft of a jack is connected with a tensioning claw by virtue of a tensioning nut in a screwing way, the claw hook of the tensioning claw is inserted into a steel plate coil to hook an inner arc rib, a steel bar anchored on the steel plate coil is tensioned, and the tension stress of prestressed steel is maintained by adopting an external fixation method that an adjusting screw rod of a fixed disk is screwed down to be against the end part of a steel mould. The invention has the technical effects that: the tensioning claw is adopted to hook the inner arc rib in the steel plate coil, thus tensioning is realized; the moment arm between the tensioning claw and the prestressed steel is small, thus the produced bending moment is low; and the steel plate coil does not deform under a tensile force of large tonnage, and the tensioning nutis adopted to connect the tensioning claw and the pull shaft of the jack in the screwing way, thus the technical problem that a bolt can not bear a shear force of large tonnage when the original boltis used for fixing is solved. The screw rod of the fixed disk is adopted for carrying out external fixation, thus the process is simple and convenient. The supporting lug of a supporting frame is of movable type, thus being applicable to production of various high bending moment electric holes in different specifications.

The invention relates to a mortise and tenon joint and bolt hybrid assembling type steel structure beam-column joint which comprises a steel structure beam, a steel structure column and a beam-columnjoint body. The steel structure beam and the steel structure column are connected together through the beam-column joint. The beam-column joint comprises an embedment mortise arranged at the flange end of the beam, an embedment groove body fixedly formed in the surface of the steel structure column, a web connecting plate and an additional connecting plate. The embedment mortise and the embedmentgroove body are in mortise and tenon joint connection. The web connecting plate, a beam web and the additional connecting plate are fixedly connected together through bolts. The beam-column joint is reasonable in structure, definite in force transmission, simple in installation process, safe, reliable, free of welding on site, free of damage to paint coatings, free for paint supplementing on site,high in speed and capable of saving materials and labor cost, the beam-column rigid connection is realized, and the construction period can be shortened by 15-25% compared with a site welding steel structure beam-column joint; no outward-extending cantilever beam sections are arranged on the column, loading and transporting are facilitated, the transport cost can be reduced by 20-30%; the construction cost is lower after standardized production is adopted.

The invention discloses an assembling light steel pipe-constraint small-diameter wood combined bearing column and a manufacturing method and belongs to the technical field of structural engineering. The assembling light steel pipe-constraint small-diameter wood combined bearing column is suitable for the development of low multilayer assembling type buildings in towns. An external assembling template is formed after the concrete is poured onto the light steel pipes and embedded connecting reinforcements, the bearing capacity of small-diameter wood under the enclosure constraint of FRP carbon fiber sheets is greatly increased, the bearing capacity of the column structure can be increased by 30%, and meanwhile, the assembling construction is simple and the small-diameter wood is effectively utilized and developed so that the green environmental protection and low carbon are realized.

Disclosed are steel structure platform frame units and an assembled and constructed steel structure platform. Each steel structure platform frame unit is constructed by assembling of column bases, vertical columns, main bearing beams, auxiliary bearing beams, a platform face plate and pulling bearing guardrails. The multiple steel structure platform frame units are assembled, leveled and fixed on site to form the steel structure platform. The invention relates to urban road traffic. By utilizing the steel structure platform, traffic congestion is relieved; the solution is worked out according to the fact that in recent years, whole line traffic congestion caused by street markets and street parks; roads, squares and parks in a city are changed from ground single-layer plane operation into a three-dimensional mode of two layers or multiple layers of a steel structure to be complementary with original traffic facilities, so that a complete traffic system is formed; and overpass bridge building and land acquisition are not needed, the construction cost is low, the influence on the environment is low, and the problems of driving and parking difficulties are solved effectively. According to the steel structure platform frame units and the assembled and constructed steel structure platform, industrialized production is achieved, expanding mounting and dismantling can be conducted at any time, and the steel structure platform frame units and the assembled and constructed steel structure platform are a good method for solving traffic congestion.

The invention discloses an integrated curtain wall and a construction method of a thermal-insulating wall system. The method comprises following steps: fixedly arranging fixing strips, erecting a first inner template, installing connection assemblies, installing thermal insulation plates, erecting a second inner template, coating cement mortar and decorating plaques. Wave-shaped metal screen plates are utilized to form a first inner template and a second inner template. A thermal insulation plate and multiple thermal insulation pipes are clamped between the first inner template and the second inner template. The cement mortar is coated outside the metal screen plates through a mortar spraying or smearing mode so that a thermal insulation wall with a hollow inner template is formed. Multiple connection assemblies are arranged on one side of the thermal insulation wall in an outwardly extending mode. The connection assemblies are connected fixedly with the multiple plaques so that the integrated thermal insulation wall and a curtain wall are formed. The integrated curtain wall and construction method of the thermal-insulating wall system have following beneficial effects: advantages such as thermal insulation, energy conservation, flame resistance, heat insulation, sound insulation, and water prevention are obtained; and the method is simple in formation, quick in construction, and is capable of shortening a construction period and protecting the environment.

The invention discloses a shear wall construction process based on a fully prefabricated floor slab. The shear wall construction process comprises the following steps: (1) binding shear wall steel bars at the bottom layer after the construction of a standard layer is finished; (2) respectively installing a shear wall inner template and a shear wall outer template on two sides of the shear wall steel bars; (3) pouring concrete; (4) installing a supporting system of the prefabricated floor slab; (5) hoisting the prefabricated floor slab close to one end of a shear wall to serve as a constructionplatform; (6) dismantling the shear wall inner template and the shear wall outer template to lift the shear wall inner template and the shear wall outer template to the construction platform; (7) hoisting prefabricated floor slabs which are not installed in the step (5); (8) binding shear wall steel bars, beam steel bars, column steel bars and floor steel bars on the upper layer; (9) respectivelyinstalling a shear wall inner template and a shear wall outer template on two sides of the shear wall steel bars; (10) pouring concrete; and (11) repeating the steps (4) to (10) to finish the shear wall construction layer by layer. The process can reduce the difficulty of cross-layer transportation of a shear wall template system and reduce the construction cost.

The invention discloses a construction method for connecting wallboards by reversely inserting a single-end cold rolling head grouting sleeve. The construction method changes a traditional wallboard connecting construction method. The method comprises the steps of firstly respectively cold rolling a single-end cold rolling head at the bottom end of a grouting sleeve on a stressed rib at the upperend part of a plane truss of a lower wallboard by adopting a hydraulic machine, respectively installing an upper wallboard in place, then grouting the grouting sleeve with ready-mixed slurry from theupper opening of the grouting sleeve into the sleeve, inserting the stressed connecting rib head exposed and extending out of the bottom of the upper wallboard into the grouting sleeve after the grouting is full, and correcting the fixed position of the upper wallboard until the bottom of the upper wallboard is placed at the upper opening of the grouting sleeve at the top of the lower wallboard. According to the method, the grouting sleeve is prefabricated in the lower wallboard and fixed on the stressed steel bar head at the top of the plane truss by cold rolling to ensure that the stressed steel bars at the upper layer and the lower layer are communicated and reliable through the stress connection of the grouting sleeve, and the connection requirement of an assembled building structure is met; the method is convenient to assemble and construct, and the quality is visual and reliable.

The invention discloses a prefabricated filling wall system with a hollow thermal insulation structure and a construction method thereof. The prefabricated filling wall comprises a hollow cavity box structure and a concrete shell layer, wherein the concrete shell layer is poured on the outer side surface of the hollow cavity box structure. The hollow cavity box structure comprises cushion blocks,a steel bar mesh frame, a hollow box body and partition boards, wherein the hollow box body is formed by surrounding of box wall plates; and the partition boards are arranged in a hollow box body in parallel and at intervals. At least four cushion blocks are arranged on the front and rear box wall plates of the hollow box body. The steel bar mesh frame is formed by tie tying of a transverse steelbar and a vertical steel bar, and is laid on the hollow box body. Holes are arranged on the cushion blocks, wherein the transverse steel bar can penetrate through the hoes. A groove is formed by the left and right side box wall plates of the hollow box body and the front and rear side box wall plates of the hollow box body. The prefabricated filling wall has simple structure, convenient construction, good thermal insulation and sound insulation performance, and little influence of human factors on the construction. Flexible connection is used for effectively suppressing cracks in the filling wall.

A partition includes at least two stands (1) spaced apart from each other, wherein each of the stands (1) includes a first panel (11), a second panel (12) corresponding to the first panel (11) and a lateral plate (13) connecting the first panel (11) and the second panel (12); at least one inner plate (3), wherein two sides of the inner plate (3) are respectively fixed to and between the two stands (1); and two outer plates (4, 5) respectively fixed to and between the first panel (11) of each stand (1) and the second panel (12) of each stand (1), wherein the two outer plates (4, 5) and the inner plate (3) form two spaces (6, 7) respectively. The inner plate 3 separates the two spaces (6, 7), so the partition is capable of performing better sound insulation effects and is more convenient to be assembled.

The invention provides an isomerization reactor component made from sealing fabric. The isomerization reactor component is of a multilayer fabric sewn structure and comprises an upper laying layer, a middle layer and a lower laying layer. The upper laying layer and the lower laying layer are each of a ceramic fiber fabric structure. Each fabric structure is formed by stacking and laying a single layer or multiple layers of ceramic fiber cloth. The middle layer is made of stainless steel metal foil. The reactor component can be formed by combining and splicing multiple fabric units. Fabric unit blocks are each of a multilayer fabric sewn structure, and the fabric unit blocks are combined and spliced through connecting pieces. A preparation method of the reactor component includes the steps that the sizes of the fabric unit blocks are designed firstly, and the upper laying layer, the middle layer and the lower laying layer are cut; then laying is conducted layer by layer according to the scheme; stacked sewing is conducted, and the fabric unit blocks are obtained; finally, the fabric unit blocks are combined and spliced into a whole through the connecting pieces. The product is good in high temperature resistance, low in cost and convenient to manufacture, and the use effect of an isomerization reactor catalyst can be remarkably improved.

The invention discloses an integral type building construction assembly technique. The integral type building construction assembly technique is characterized in that: a base is arranged on the bottom of a column template; an adjustable support pillar is arranged at one side of the column template; angle steel is arranged on the upper part of the support pillar; a superposed beam is arranged on the angle steel; a hole is formed in the superposed beam; a steel column is inserted into the hole; a square timber is arranged on the steel column; a prefabricated ribbed prestressed concrete superposed plate are arranged on the square timber; the columns, the beam, and plate steel bars are lapped according to a design demand; a prefabricated concrete superposed beam template is arranged; and then the columns, the beam, and the plates are poured into a whole. The integral type building construction assembly technique can increase the whole speed of building assembly and construction, facilitates construction quality control, and can ensure construction safety.