981results about "Bridge materials" patented technology

The invention discloses a welding device for cable-stayed bridge construction, and relates to the field of welding devices.The welding device comprises a welding machine case, a follow-up base is installed on the bottom side of the welding machine case, two expansion sliding plates are installed on the bottom side of the follow-up base in a sliding mode, and two advancing bases are installed on the bottom sides of the expansion sliding plates; a plurality of advancing wheels are rotationally mounted on the advancing seat; and the device further comprises a blocking and avoiding device and an active expansion device. It needs to be explained that when movement of the welding machine case is blocked, the advancing supporting arm is folded, the purpose of active obstacle avoidance is achieved, and flexible movement of the welding machine case is guaranteed; besides, if the advancing wheels on the same side are all blocked, the expansion sliding plates are automatically unfolded, the purpose of actively avoiding obstacles is achieved again, the problem that the welding machine case cannot advance and even turns over when encountering large obstacles is prevented, the safety of the welding machine case is guaranteed, and then the welding construction efficiency of the cable-stayed bridge can be guaranteed.

The invention discloses a self-resetting multi-section prefabricated assembled pier and a construction method, the self-resetting multi-section prefabricated assembled pier comprises a prefabricated cover beam, a pier column and a pier bearing platform, the pier column is formed by splicing a plurality of prefabricated sections, and is connected with the prefabricated cover beam through the prefabricated section located at the top; the prefabricated bent cap is connected with the pier bearing platform through a prefabricated section located at the bottom in a bell and spigot joint mode, and the non-adhesive prestressed tendons are connected with the prefabricated bent cap and the pier bearing platform and provide self-resetting capacity for the pier. According to the multi-section prefabricated assembled pier with the self-resetting capacity and the construction method, the formworks are prefabricated in a unified mode in a factory, the efficiency is improved while the prefabrication and construction cost is reduced, the mode of prefabricated section splicing and shallow socket connection is adopted, construction in narrow and complex terrains is facilitated, prestressed tendons used for self-resetting are arranged, and the construction efficiency is improved. The overall anti-seismic performance is improved, the integrity, rigidity and bearing capacity of the assembled pier are improved, the service life is prolonged, and meanwhile the maintenance cost is reduced.

The utility model belongs to the technical field of tension beam structures, and particularly relates to a three-way pre-tightening steel wire tension beam structure. A three-way pre-tightening steel wire tension beam structure comprises a cross beam, a steel wire and a pre-tightening assembly, the pre-tightening assembly is installed on the cross beam, a steel wire groove is formed in the cross beam, and the steel wire is installed in the steel wire groove through the pre-tightening assembly; the utility model provides a three-way pre-tightening steel wire tension beam structure, and aims to solve the problem of balance between the bearing capacity and the self weight of a cross beam in a tension beam structure in the prior art.

The invention discloses a cooperative control method for stay cable force and main beam line shape of an extradosed cable-stayed bridge. The cooperative control method comprises the steps that cable force data, main beam line shape data and main beam section internal force monitoring data in the construction stage are collected; based on a preset cable force adjustment judgment criterion, whether cable force adjustment needs to be started or not is judged; when triggering conditions are met, a geometric nonlinear analysis model considering cable-beam-tower cooperative deformation is established, and a cable force-main beam line shape sensitivity influence matrix is generated; screening K stay cables as key adjustment objects by adopting an influence matrix column vector L2 norm sorting method, and performing global optimization based on a simulated annealing algorithm to obtain an optimal displacement mean square error and an optimal cable force adjustment amount; and according to the key adjustment object and the cable force adjustment amount, multi-cable synchronous grading tensioning work is carried out. The invention provides a systematic and intelligent solution for the construction control of the extradosed cable-stayed bridge, and has remarkable economic benefits and social benefits.

The invention relates to a corrugated steel web accurate positioning device, and relates to the technical field of steel structure construction in bridge engineering, the corrugated steel web accurate positioning device comprises a frame body and a steel web body, the upper end of the frame body is provided with a laser interferometer, one side of the frame body is provided with a controller, the middle part of the frame body is provided with a sliding groove, and two sides of the sliding groove are provided with through grooves; and a hydraulic cylinder is fixed to the inner wall of the upper end of the sliding groove, a sliding block is fixed to the driving end of the hydraulic cylinder, a fixing rod is fixed to one end of the sliding block, a connecting structure is arranged on the fixing rod, and a plurality of clamping frames are arranged on the connecting structure. The hydraulic cylinder drives the sliding block to move, on one hand, the effect of step-by-step positioning is achieved, the effect of improving the use effect of the positioning device is achieved, on the other hand, the effects of automatic sealing and cleaning are achieved, the use convenience of the positioning device is effectively improved, on the other hand, the effect of self-adaptive balance weight adjustment is achieved, and the use safety is improved. And the use stability of the positioning device is effectively improved.

The present invention relates to the technical field of bridge engineering. Particularly disclosed are a steel shell-concrete composite orthotropic bridge deck structure and a fabrication method and device. The steel housing-concrete composite orthotropic bridge deck structure comprises a steel shell structure, infilled concrete, longitudinal and transverse stiffening ribs arranged at the bottom of the steel shell structure, and a deck-end connecting structure, wherein the steel shell structure comprises an upper steel plate and a lower steel plate that are arranged in parallel, and a plurality of perforated T-shaped ribs arranged in parallel in a longitudinal direction. Webs of the perforated T-shaped ribs are welded to the upper steel plate, flanges are riveted to the lower steel plate, the upper steel plate and the lower steel plate are connected into the steel shell structure, and reinforced concrete tenons formed by the perforated T-shaped ribs and core bar reinforcements and shear bolts anchor the upper steel plate and the lower steel plate in the infilled concrete to form a steel shell-concrete composite deck that bears loads jointly. The present invention provides high bending stiffness, solves the problem of fatigue at welds between the stiffening ribs and a steel top plate, fully utilizes the properties of a steel shell and concrete, and solves the problems of the crackability under a negative bending moment and excessive weight of a traditional composite bridge deck.

The invention discloses a Bailey truss and steel trestle plate connecting mode, and relates to the technical field of bridge construction, the Bailey truss and steel trestle plate connecting mode comprises a bridge plate and a Bailey truss, and further comprises a supporting beam and a limiting assembly, the two ends of the supporting beam are fixedly connected with a first limiting rod and a second limiting rod, a concave hole is formed in one side of the first limiting rod, and a through hole is formed in the middle of the second limiting rod; the supporting beam, the first limiting rod and the second limiting rod are distributed in an I shape, a clamping groove is formed in the top of the bailey truss, the two sides of the supporting beam are slidably clamped to the inner wall of the clamping groove, the inner side faces of the first limiting rod and the second limiting rod are slidably clamped to the two sides of the top of the bailey truss, and inserting rods are slidably connected to the surface of the bailey truss and the inner wall of a through hole of the second limiting rod in a penetrating mode. And the tail end of the inserting rod is slidably inserted into the inner wall of a concave hole of a limiting rod I. The problems that a plurality of bolts are needed for connection in a connecting mode, operation is tedious during field installation, the bolts are prone to loosening after being vibrated for a long time, and stability is reduced are solved.

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 relates to the technical field of anti-collision guardrail construction, in particular to a highway bridge anti-collision guardrail pouring formwork and a construction method thereof.The highway bridge anti-collision guardrail pouring formwork comprises a bridge body, a formwork assembly and a support assembly, the formwork assembly comprises an inner formwork and an outer formwork, the lower surface of the outer formwork 202 is fixedly connected with an edge covering formwork, and the support assembly comprises a vertical support and a transverse support. The construction method of the highway bridge anti-collision guardrail comprises the following steps of construction preparation; installing reinforcing steel bars; mounting a template; pouring concrete; removing the template; and preserving. The reinforcing system adopts a'four-pull-rod 'and'double-bracket' double insurance design, namely an upper pull rod, a lower pull rod, an outer mold vertical pull rod, an inner mold transverse pull rod, a vertical bracket and a transverse bracket, so that the stability of the external hanging type template is ensured.

The utility model discloses a road bridge crack reinforcing structure which comprises a road bridge, a crack and a concrete pouring body, the crack is arranged on the upper end face of the road bridge, a reinforcing plate is arranged in the crack and horizontally arranged in the crack, a groove is formed in the upper end of the reinforcing plate, and the concrete pouring body is arranged in the groove. The bottom of the groove is provided with three pouring openings, the three pouring openings are formed in the bottom of the groove side by side at equal intervals, the pouring openings communicate with the crack, an asphalt filling layer is arranged above the reinforcing plate, and the lower end of the asphalt filling layer is attached to the reinforcing plate and the concrete pouring body. According to the crack reinforcing structure, the cracks are cleaned firstly, the reinforcing plates are transversely embedded into the cracks, then gaps are filled by pouring concrete, the transverse stress strength of the reinforcing structure is improved, the repaired cracks are effectively prevented from cracking again, and the crack reinforcing effect is improved.

This invention relates to the field of bridge reinforcement technology, and more particularly to an external prestressed reinforcement structure for bridges, including a bridge body and reinforcement components. The reinforcement components include a fixing member with a fastening bolt at its lower left end. The fixing member is threadedly connected to the bridge body via the fastening bolt. This invention, by incorporating components such as a support plate, sliding roller, elastic compression plate, and return spring, can automatically adjust its position during the natural shrinkage of the concrete repair layer. The sliding roller slides at the bottom of the elastic sealing plate, and in conjunction with the tension of the return spring, continuously applies reverse pressure, ensuring that the sealing plate remains tightly fitted to the repair layer. The elastic compression plate, under the action of the support spring and telescopic sleeve, can evenly distribute pressure, adapting to the curvature changes of the repair layer, avoiding localized stress concentration, and ensuring that the sealing protection of the concrete repair layer does not fail during the shrinkage and shaping process, preventing crack recurrence.

The invention discloses a positioning device and method for corrugated steel web installation, and the positioning device comprises an angle adjusting assembly, a width adjusting assembly, a spacing adjusting and fixing assembly, a corrugated steel web concave part fixing assembly, a corrugated steel web side face fixing assembly and a supporting plate. Two first hydraulic rods are fixedly connected to the upper side of the supporting plate, first connecting plates are hinged to the two sides of the upper ends of telescopic shafts of the two first hydraulic rods correspondingly, the other ends of the first connecting plates are hinged to the middle of second connecting plates, and the two sides of the supporting plate are hinged to one ends of the second connecting plates correspondingly. The ends of the two second connecting plates on the same side are fixedly connected with transverse plates correspondingly, and the width adjusting assembly comprises two pairs of second hydraulic rods. The positions of the first electromagnet, the second electromagnet and the third electromagnet can be adjusted according to corrugated steel webs of different specifications, the corrugated steel webs are magnetically adsorbed and fixed, and the mounting angle and width of the two corrugated steel webs can also be adjusted.

The application provides a rotatable pull rod installed on the top of an I-beam template, belonging to the field of prestressed concrete bridges, which comprises a fixed bottom plate, a movable bottom plate arranged on one side of the fixed bottom plate, a telescopic mechanism connecting the movable bottom plate and the fixed bottom plate, a positioning clamping block fixedly connected to the bottom of the fixed bottom plate and the movable bottom plate, and a U-shaped frame fixedly connected to the side end of the fixed bottom plate and the movable bottom plate. The pushing of the driving spring is offset by the driving pawl, and the driving pawl is unlocked. Under the pushing of the reset coil spring, the rotating shaft is rotated, the rotating shaft drives the driving pawl to rotate, the driving pawl is reset, and the two driving pawls are reset one by one, so that the fixing of the device and the two I-beam templates is conveniently released, the device is quickly disassembled, the device is quickly assembled and disassembled, the installation mode between the butterfly buckle and the screw rod is avoided, the installation speed is improved, and the flow operation of the beam bench is accelerated.

The invention discloses a new and old beam UHPC transverse connection bridge floor structure and a calculation method and construction method thereof.The new and old beam UHPC transverse connection bridge floor structure comprises an old main beam, a new main beam, an old bridge floor concrete pavement layer, a new main beam bridge floor concrete pavement layer, a UHPC connecting plate, a stainless steel plate and a debonding layer structure, the new main beam is arranged on the side edge of the old main beam in parallel, and a set distance is reserved between the new main beam and the old main beam; the old bridge deck concrete pavement layer and the new main beam bridge deck concrete pavement layer are respectively paved at the tops of the old main beam and the new main beam, and a reserved connecting groove is formed at the transverse butt joint of the old main beam and the new main beam; the two ends of the stainless steel plate are arranged at the tops of the new main beam and the old main beam correspondingly, and the UHPC connecting plate is poured into the reserved connecting groove. And debonding layer structures are arranged between the UHPC connecting plates and the new and old main beams, the outer side bottoms of the debonding layer structures are arranged at the tops of the stainless steel plates, and the inner side bottoms of the debonding layer structures are supported at the tops of the new and old main beams. By additionally arranging the debonding layer, the transverse calculation length of the UHPC connecting plate is prolonged, reasonable weakening of the transverse connecting rigidity is achieved, and the transverse rigidity is dynamically adjusted by adjusting the plate thickness and length of the UHPC connecting plate.

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 invention belongs to the technical field of sail-shaped cable-stayed bridge construction, and relates to a long and thin structure arched steel tower installation method which comprises the steps that a bridge lower structure and a main tower are constructed, and an auxiliary tower root embedded section, a top connecting piece and related construction components are embedded in the main tower; during main tower construction, an attached tower fixing section and a main beam are synchronously installed, and the attached tower fixing section is fixedly connected with the main tower through welding and a steel truss set; a support is erected on a girder bridge floor, tower-attached sections are assembled according to the inverted arch posture, the pre-bias value and the pre-camber are preset, and rotating hinges are installed; a vertical rotating cable, a back cable and a cable wind cable which are made of steel strands are arranged, and testing is completed; one-time vertical rotation welding of one section of the attached tower is achieved through synchronous traction of a continuous jack, and then secondary vertical rotation is conducted on the whole section of the attached tower; after vertically rotating in place, welding and fixing, and dismounting related equipment and a bracket; the invention aims to solve the problems of high overhead operation risk, difficulty in control of construction precision, large temporary support investment, low work efficiency and insufficient adaptability of a traditional mounting method.

The utility model relates to the technical field of installation of prestressed tendons, in particular to an anti-collapse device for prestressed tendons, which comprises a connecting seat, an anchor backing plate fixedly arranged at the end of the connecting seat, a plurality of third notches formed in the side wall of the connecting seat, a cover plate fixedly arranged at the end of the anchor backing plate, a plurality of first notches formed in the side wall of the cover plate and a plurality of second notches formed in the side wall of the cover plate. Second sealing rings are connected to the inner side walls of the first notches in a clamped mode. Compared with a traditional anti-collapse device for the prestressed tendon, the anti-collapse device for the prestressed tendon is provided with the cover plate, the threaded column, the first notch, the positioning groove, the third clamping groove and the second sealing ring according to requirements, and the outer surface of the threaded column is sequentially sleeved with the positioning groove, so that the mounting and positioning precision of the cover plate is improved; the inner size of the third clamping groove is sequentially matched with the outer size of one end of the clamping block, the clamping stability of the clamping block is improved, the second sealing ring is evenly arranged on the outer surface of the prestressed tendon in a sleeving mode, the sealing performance of the first groove opening is improved, corrosion is avoided, and the tensioning safety and stability of the prestressed tendon are improved.

The invention provides a manufacturing method of a small-spacing three-web box beam, which comprises the following steps of: S1, blanking and processing: cutting by adopting a numerical control flame and plasma cutting technology, blanking at high precision according to a design size, reserving a machining allowance and a groove form, and polishing after cutting; s2, assembling and positioning are conducted, specifically, components are assembled on the jig frame through the upside-down mounting technology, and positioning of a top plate is completed firstly; positioning an inner side web plate and a middle web plate; pre-penetrating positioning of U ribs, longitudinal beams and anchoring partition plates is sequentially completed on the middle web; and finally, positioning of the outer side web is completed. S3, bending position welding forming is conducted, specifically, a side web and a top plate are welded at a bending position; after flaw detection is qualified, middle webs and a top plate are fixed through downward welding; u-shaped ribs and longitudinal beams are welded and fixed in a bending manner; welding a bottom plate, and fixedly connecting the bottom plate with the middle web plate, the anchoring partition plate and the side web plate in a welding manner; finally, the stiffening ribs and the support base plate are welded and anchored; s4, flame cutting process allowance; and S5, sanding and coating are conducted, and manufacturing is completed. High-quality welding manufacturing is achieved, and the method is suitable for popularization.

An apparatus and method for forming a structural support wall includes a plurality of courses of structural blocks arranged in a laterally staggered configuration. A plurality of voids are formed through body portions of each of the blocks. The laterally staggered configuration of the blocks aligns the voids in columns extending vertically through the plurality of courses. The resulting assembled abutment wall may support superstructures while also leaving access to the columns to pour a binding material, for example concrete, to bind the structural blocks after the support beams are positioned.

The utility model discloses a template-free central anti-collision guardrail structure prefabricated by pouring concrete in the middle. The template-free central anti-collision guardrail structure comprises a beam body, a prefabricated body, a steel reinforcement framework and a middle core body, a first reinforcing steel bar is pre-buried in the beam body; the prefabricated body is made of concrete, the prefabricated body abuts against a beam body, the prefabricated body comprises a base shell and a guardrail body, and a hollowed-out space with a downward opening is formed in the middle of the base shell; the prefabricated body is arranged, the hollowed-out space is formed in the middle of the base shell, after the prefabricated body is hoisted, the steel reinforcement framework can be connected with the first steel reinforcement in a coupling mode, factory prefabrication and on-site rapid hoisting can be achieved, the bridge deck pavement construction procedure is not affected, concrete is secondarily poured into the hollowed-out space through the pouring hole, and the middle core body is formed; and a template is not needed in the construction process, so that the construction progress is greatly accelerated, the efficiency is greatly improved, the pouring quality can be guaranteed, noise and dust residue pollution generated in the construction process can be reduced, and the method is environmentally friendly and can be widely popularized and used.

The invention belongs to the technical field of bridge construction, and particularly relates to a cast-in-place box girder formwork sliding device and a construction method thereof.The device comprises a sliding rail system, a formwork fixing platform and a traction system, the sliding rail system is formed by detachably splicing multiple sections of I-shaped steel, and the formwork fixing platform is of an integrated frame structure; a roller group matched with the sliding track system is arranged at the bottom of the template fixing platform, and an adjustable template rolling shaft is arranged at the top of the template fixing platform; the traction system is used for driving the template fixing platform to slide along the sliding rail system; the construction method comprises the steps of parameter matching, track laying and positioning, formwork mounting and fastening, sliding propulsion control, position correction locking and cyclic displacement operation, deviation is corrected through closed-loop regulation and control in sliding, and positioning adopts a three-level alignment and multiple locking positioning mechanism to guarantee precision; the problems existing in traditional cast-in-place box girder formwork construction are solved, and the construction goals of mechanization, high precision, high adaptability, safety and stability are achieved.

An intelligent concrete vibrating rod comprises an upper shell and a lower shell which are connected with each other, the upper end of the upper shell is in threaded connection with a rod head of the vibrating rod, the upper shell is of a hollow barrel structure, a mounting base is arranged at the lower end of the outer side of the upper shell, a soil stress sensor is embedded in the mounting base, and a connecting sleeve is arranged at the upper end of the outer side of the upper shell; the upper shell is provided with a threading hole between the connecting sleeve and the mounting base, a sealing sleeve is arranged between the connecting sleeve and the mounting base, the lower shell is provided with a containing cavity with an opening in the top, the top of the containing cavity is connected with an upper cover, a bearing support is arranged in the containing cavity and used for fixing an attitude sensor, and damping springs are arranged on the top, the bottom and the side face of the bearing support. The upper cover is used for abutting against the inner wall of the containing cavity or the upper cover, and the containing cavity is filled with damping media. The installation mode is convenient and fast, an existing conventional vibrating rod can be directly compatible, lossless rapid installation is achieved, a multi-stage damping mechanism is integrated in a limited space, and the measurement stability and compactness judgment capacity in a strong vibration environment are improved.

The present application relates to the technical fields of bridge engineering, and discloses a rigid frame bridge main girder closure gap top force applying device and closure construction method, which comprises a supporting assembly, a top locking assembly, and a main girder closure construction method based on corresponding facilities. The present application has the following advantages and effects: the supporting assembly is arranged between the top plate and the bottom plate, the supporting beam of the supporting assembly is supported on the concrete of the top plate and the bottom plate, the supporting beam evenly spreads the huge locking force to the top plate and the bottom plate of the main girder through the contact surface with the concrete of the top plate and the bottom plate, and compared with the direct support on the top plate and the bottom plate and the web of the main girder, or the support on the corbels and the embedded parts, or the force transmission mode through the cast concrete tooth blocks, the present application has the advantages of light structure, clear stress, strong bearing capacity, simple operation, no influence on the closure gap concrete pouring, no tensile stress cracks on the main girder, and low cost.

This invention discloses a crack-resistant rheologically modified functional material for steel-concrete composite cable towers, its preparation method, and its application. The crack-resistant rheologically modified functional material of this invention comprises 1-10 μm ultrafine light-burned magnesia expandable material, 15-30 μm medium-fine light-burned magnesia expandable material, 30-100 μm medium-coarse calcareous expandable material, 0.1-2 μm fly ash microspheres, 0.02-0.05 μm nano-silica, and an anti-agglomeration regulating material. The anti-agglomeration regulating material is composed of a zirconium aluminate coupling agent and hexadecyltrimethylammonium bromide. This crack-resistant rheologically modified functional material is applied to the concrete of ultra-high strength steel-concrete composite cable tower structures. Concrete prepared using the crack-resistant rheologically modified functional material of this invention exhibits low viscosity, good anti-segregation properties, and volume stability, achieving a synergistic unity of rheological modification and crack-resistant expansion in the concrete of ultra-high strength steel-concrete composite cable tower structures.

The invention provides a multi-friction damping anti-falling shock-absorbing spherical support, and relates to the technical field of bridge buildings. The multi-friction damping anti-falling shock-absorbing spherical support comprises an upper support plate, a plane sliding plate, a spherical crown lining plate, a spherical sliding plate, a pressure-bearing assembly, a high-friction sliding part, a wedge-shaped damping device, a lower support plate, a sleeve, an anchor rod and an anchor bolt, and the plane stainless steel sliding plate is arranged on the surface of an inner cavity of the upper support plate; the plane sliding plate is arranged above the spherical crown lining plate and makes contact with the plane stainless steel sliding plate, the spherical crown lining plate is placed on the spherical sliding plate, and the spherical sliding plate is installed at the upper end of the pressure bearing assembly. In the invention, the high-friction sliding piece is matched with the high-friction contact plate to realize primary friction energy consumption, the trapezoidal structure of the pressure-bearing assembly and the wedge-shaped damping device are used for extruding to realize secondary damping superposition energy consumption, and the limiting stop block is used for realizing rigid limiting, so that the problems of rigid collision and beam falling of a beam body are effectively solved; and the anti-seismic safety performance of the bridge is obviously improved.

The invention discloses a building road and bridge pouring construction process and device. The building road and bridge pouring construction device comprises a plurality of road and bridge pouring formwork bodies which are transversely spliced together. Each splicing structure is arranged between every two adjacent road and bridge pouring formwork bodies and comprises a splicing block fixed to the surface of one side of the corresponding road and bridge pouring formwork body, a splicing groove formed in the surface of the other side of the corresponding road and bridge pouring formwork body and corresponding to the splicing block, and an outer side type locking structure arranged between the splicing block and the splicing groove; each sealing structure is arranged between every two adjacent road and bridge pouring template main bodies; according to the building road and bridge pouring construction technology and device, through the innovative splicing structure and sealing design, it is avoided that penetrating type screw holes are formed in the splicing positions of the formworks, the problems that concrete leaks from the screw holes and slurry leaks in the pouring process are fundamentally solved, the defects of honeycombs, pitted surfaces and the like on the surface of the concrete are effectively prevented, and the construction quality is improved. The appearance quality of the road and bridge structure is remarkably improved, the road and bridge structure is smoother and more attractive, and the sealing performance of the formwork is enhanced.

The invention discloses an anti-crack rheology modified functional material for a steel plate-concrete combined cable bent tower as well as a preparation method and application of the anti-crack rheology modified functional material. The anti-crack rheological modified functional material comprises a 1-10 [mu] m superfine light-burned magnesia expansion material, a 15-30 [mu] m medium-fine light-burned magnesia expansion material, a 30-100 [mu] m medium-coarse calcium expansion material, 0.1-2 [mu] m fly ash microspheres, 0.02-0.05 [mu] m nano-silica and an anti-agglomeration regulation and control material, wherein the anti-agglomeration regulation and control material is formed by compounding a zirconium aluminate coupling agent and cetyltrimethylammonium bromide; the anti-crack rheological modified functional material is applied to ultrahigh-strength steel plate-concrete combined cable bent tower structure concrete. The concrete prepared from the anti-crack rheology modified functional material prepared by the preparation method has low viscosity, good segregation resistance and volume stability, and the synergism and unification of concrete rheology modification and anti-crack expansion of an ultrahigh-strength steel plate-concrete combined cable bent tower structure are realized.

The application provides a kind of pier column steel part vertical non-matching forming industrialized construction method and construction device, comprising the following steps: S1, according to the shape and size of the steel mesh required by pier column design;S2, complete the welding of steel mesh;S3, steel mesh is placed in bracket;S4, use hook and cable to hoist the whole bracket and steel mesh into the first operation platform;S5, the two sides of the lifting appliance are installed with flexible cable;S6, the steel mesh of each layer is hung on the corresponding hook on the flexible cable;S7, the steel mesh in the bracket is hoisted in turn and the separation of the steel mesh is completed to form the mesh intermediate body;S8, continue to lift the hook to fix the lifting appliance and the upper cross beam on both sides;S9, install the alignment hanger on the lower side of the hook, and fix the main reinforcement in the mesh intermediate body through the positioning sleeve on the alignment hanger. The application is designed ingeniously, can greatly improve the production efficiency of steel parts, at the same time ensure the construction quality, thereby improve the efficiency of project construction.

The present application relates to the technical field of concrete pier maintenance, and particularly relates to a concrete pier circulating water intelligent spraying maintenance system. The system comprises a three-pronged support frame, the three-pronged support frame is provided with a connecting frame, the connecting frame is provided with a plurality of sliding grooves which are uniformly distributed in a circumferential direction, the sliding grooves are slidably connected with sliding frames, the sliding frames are rotatably connected with nozzles, the nozzles are fixedly connected with gears, and the connecting frame is fixedly connected with a plurality of racks which have the same number as the gears. The distance between the nozzles and the concrete pier is adjusted, and the nozzles are intermittently rotated by the gears. Without changing the height positions of the nozzles, the water streams sprayed by all the nozzles are obliquely sprayed to different heights of the concrete pier, the probability of shaking caused by the up-and-down movement of all the nozzles is reduced, the stability of all the nozzles in the water spraying process is ensured, the uniformity of the humidity distribution of the concrete pier in all directions is improved, and the effect of the spraying maintenance of the concrete pier is improved.