1558 results about "Expansion joint" patented technology

The invention discloses a bridge deck system multi-sub-project integrated construction process optimization method. The method comprises the following steps: step 1, optimizing a process based on a BIM (Building Information Modeling); step 2, carrying out combined measurement by adopting GNSS-RTK and laser scanning; 3, bridge deck pavement construction and expansion joint installation are conducted on the basis of the combined measurement result; 4, the paver is linked with the reserved groove for positioning, the flatness error can be effectively controlled, and the bridge deck pavement quality is guaranteed; 5, guardrail modular construction is carried out; sixthly, seamless connection, layered backfilling and dynamic compaction are conducted on the butt strap behind the abutment; 7, whole-process environmental protection and finished product protection; 8, performing three-dimensional scanning comparison; step 9, block chain data archiving; the method has the beneficial effects that construction simulation, sequence adjustment and dynamic monitoring are carried out based on the model optimization process logic, the problems of process crossing and construction period conflict can be recognized and eliminated by simulating the construction process in advance, accurate positioning of each subentry project is ensured, and the overall coordination of construction is improved.

The invention provides a construction method of a CRTS III type slab ballastless track, and relates to the technical field of high-speed rail construction, and the construction method comprises the following steps: mounting base plate steel bars, side forms, end templates and limiting groove templates, placing foam plates at expansion joints, and reserving track slab pressing and anchoring holes; base plate concrete is poured, and base plate concrete formwork removal, surface finishing, maintenance and expansion joint construction are carried out after pouring; constructing a geotextile isolation layer and an elastic cushion layer; limiting groove steel bars and self-compacting concrete layer steel bar meshes are installed, and track plates are placed; before and after the track plate and the base plate are fastened by the pressing device, the track plate is finely adjusted by the fine adjustment device; and a self-compacting concrete formwork is installed, self-compacting concrete is poured, and post-pouring treatment and curing are conducted. The track plate and the base plate are fastened through the pressing device, so that the track plate, the base plate and the self-compacting concrete layer are tightly attached in the self-compacting concrete pouring period, and the situation that reworking or track laying is difficult due to the fact that the floating amount of the track plate is too large is avoided.

The present application relates to a kind of plate type ballastless track bed expansion joint glue injection and leveling integrated system, including control system, glue pipeline system, mobile platform, glue injection execution system, wherein glue pipeline system is applied to the pressure of glue body storage tank, force glue liquid to be transported along pipeline to the end of glue injection execution system, glue injection execution system is by six-axis mechanical arm control unit according to expansion joint space coordinate planning six-axis mechanical arm path information and forms six-axis mechanical arm action instruction, realizes six-axis mechanical arm end injection head to expansion joint and carries out glue injection operation.The present application is by setting glue injection execution system and glue pipeline system on mobile platform, can guarantee according to the length direction of expansion joint and carry out glue injection and according to stable glue injection quantity realize the glue injection of expansion joint, reduce labor intensity, improve the glue injection quality of expansion joint.

The utility model discloses a double-column formwork device at an expansion joint, and belongs to the technical field of building construction, the double-column formwork device at the expansion joint comprises a plurality of column formworks, a concrete pouring cavity is defined by the plurality of column formworks, limiting assemblies are arranged on the outer walls of the column formworks in a surrounding mode, and the limiting assemblies are used for hooping and limiting the column formworks; the extruded sheet is inserted in the middle of the concrete pouring cavity and is used for dividing the concrete pouring cavity into two column pouring cavities; the number of the reinforcing formworks is two, the two reinforcing formworks are arranged on the two opposite sides of the extruded sheet, the second locking pieces are arranged on the two opposite column formworks in a penetrating mode, and the second locking pieces are used for abutting against the reinforcing formworks and extruding the reinforcing formworks to be tightly attached to the extruded sheet. The concrete pouring cavity is divided into the two column pouring cavities through the extruded plate, meanwhile, the extruded plate is reinforced and fixed by matching the reinforcing formwork with the second locking piece, deformation of the extruded plate is greatly reduced, construction is convenient, the formwork dismounting workload is small, and the formwork mounting speed is high.

The invention discloses an underground powerhouse composite aluminum plate modular construction system and method, belongs to the technical field of underground building decoration, and solves the problems that in traditional underground powerhouse decoration, aluminum plates crack due to rock wall deformation, and the construction precision is difficult to guarantee. According to the technical scheme, the modular composite aluminum plate unit is composed of a light keel frame, a filling layer and a decorative aluminum plate layer, and an independent supporting structure is formed through rigid connection of an integral keel net and a generator layer concrete constructional column; the flexible telescopic device is arranged in a gap between the keel net and the rock wall in an embedded mode. And the digital dynamic control module monitors flatness and deformation data in real time through a laser range finder and a vibration sensor, and automatically adjusts the displacement of the inclined long hole of the connecting corner brace and the pre-tightening force of the expansion bolt by using an intelligent feedback actuator. The system is mainly used for high-precision modular decoration construction of an underground powerhouse generator layer, and can effectively adapt to rock wall deformation and ensure that the construction quality is stable and reliable.

The utility model relates to the technical field of expansion joints, in particular to a deformed steel-elastic body combined seamless expansion joint structure and a bridge, the expansion joint structure increases the coupling action area and the coupling force of an elastic body and deformed steel through the combined structural design of a deformed plate, the deformed steel, the elastic body and a covering layer, so that the expansion joint structure is more flexible and reliable. The phenomenon that weak connecting surfaces are easy to debond too early is improved, the service life of the structure is prolonged, and the durability of the structure is improved; the deformation direction of the elastic body is controllable, the road surface is prevented from bulging, and the driving safety problems such as bumping are completely eradicated; the covering layer in the expansion joint area can cooperate with the elastic material for tension and compression deformation, meanwhile, it is guaranteed that the rigidity transition from the asphalt concrete layer in the non-expansion area to the covering layer is smooth, and the vicious circle that the bumping phenomenon is caused by the unsmooth road surface, and the local damage of the road surface is more serious due to the impact load under the bumping phenomenon is prevented.

A sun umbrella locking device includes: a sliding base, a locking clamping base and a fastening assembly, wherein a sliding chamber is formed in the locking clamping base, and two locking pieces are arranged on side surfaces of the locking clamping base; an expansion joint is formed between the two locking pieces, and the expansion joint extends into the sliding chamber of the locking clamping base; the two locking pieces are respectively provided with a first locking hole, the sliding base is provided with an accommodating chamber, and the locking clamping base is arranged in the accommodating chamber; the sliding base is provided with a second locking hole aligned with the first locking hole; after passing through the second locking hole and the first locking hole, the fastening assembly is connected to the sliding base and the locking clamping base.

The invention provides ultrahigh-temperature fatigue test equipment for a large-size expansion joint. The ultrahigh-temperature fatigue test equipment comprises a loading system, a heating system, a cooling system and a pressurizing system, the loading system is composed of an execution mechanism, a guide mechanism, a load platform and a high-temperature pull rod assembly, and is used for applying a stable dynamic axial load; the heating system comprises a heating base plate, a low-temperature heating chamber provided with a transverse opening and closing mechanism and a high-temperature heating chamber provided with a vertical lifting mechanism, and rapid crossing of a material sensitization temperature area is achieved. The cooling system comprises a circulating water-cooling plate integrated on the heating chassis, a double-end water-cooling flange and a forced water-cooling jacket sleeved at the bottom of the high-temperature pull rod, and is used for blocking a heat conduction path; the pressurization system provides a protective atmosphere with the pressure fluctuation smaller than or equal to + / -10% through the gas circuit device. The equipment is suitable for testing the fatigue performance of the large-size expansion joint in an ultrahigh-temperature environment of 1000 DEG C, and meets the reliability evaluation requirements of materials such as nickel-based alloy and stainless steel.

The invention relates to the technical field of intelligent sensing of bridges, in particular to an energy collection device arranged in a bridge expansion joint, a design method and a bridge expansion joint monitoring mechanism, and the device comprises a conversion unit which is arranged in a bridge expansion joint structure, captures the strain of the structure after the structure is stressed, and generates an alternating flexural electric signal; the substrate layer is positioned between the conversion unit and the bridge expansion joint and is used for adjusting the strain distribution of the conversion unit; the rectification unit is integrated with an impedance matching circuit, is connected with the conversion unit, converts the alternating deflection electric signal into direct current, and transmits the direct current to the energy storage unit; compared with the prior art, the monitoring mechanism for the bridge expansion joint has the advantages that a self-energy-supply structure based on the flexoelectric effect is arranged in the device, an external power source is not needed, the wiring and maintenance cost is remarkably reduced, meanwhile, millimeter-level displacement distinguishing and real-time structure health assessment are achieved through the monitoring unit, and the monitoring accuracy is improved. And the structural safety of the bridge expansion joint is ensured.

The utility model relates to the technical field of expansion joint distance measurement, in particular to a municipal bridge expansion joint width real-time distance measurement device, which comprises two grab handles, a measuring mechanism is fixed at the rear end of each grab handle, a supporting mechanism is fixed at the rear end of each measuring mechanism, and an inner supporting rod mechanism is mounted between the two supporting mechanisms. An outer supporting rod mechanism is installed between the two measuring mechanisms. The measuring mechanism comprises a mounting seat and a connecting plate, the connecting plate is fixed at the rear end of the mounting seat, positioning seats are fixed on two sides of the front end of the connecting plate, a laser range finder is mounted on the inner side of the mounting seat, a detection bolt is in threaded connection with the middle of the outer side of each positioning seat, and a lead rod is fixed at the front end of each detection bolt. And the device can change along with the width change of the expansion joint, so that the actual width of the expansion joint can be truly reflected by the measurement data, and a reliable basis is provided for municipal bridge maintenance.

The multi-arc-shaped decorative curtain wall system comprises a supporting keel system and a multi-arc-shaped decorative plate, supporting keels are connected with a main body structure through connecting plate sets, and the supporting keels are filled with heat preservation layers; the multi-arc-shaped decorative plate is formed by horizontally splicing double-arc-shaped plates, U-shaped groove plates are arranged on the inner sides of the double-arc-shaped plates and connected with the inserting plates in an inserted mode, and the double-arc-shaped plates are vertically connected with rhombic cavity inserting cores formed by the stiffening plates, so that multi-direction freedom degree adjustment is achieved. The supporting keel system adopts a hanging connection type inner side plate and a splicing outer side plate, an elastic expansion joint structure is combined, and the problems that a traditional curtain wall is poor in curved surface adaptability and joints are prone to water leakage are solved. And meanwhile, positioning and prefabrication are optimized through a BIM model in construction, and the installation precision is improved. The method has the complex curved surface modeling capacity, high waterproof performance and high construction efficiency, and is suitable for modern special-shaped building curtain wall engineering.

The utility model discloses a light overhead roadbed structure which comprises an upper main body structure, the upper main body structure is in a segment type, an expansion joint is arranged between the adjacent upper main body structures in the line direction, the lower end of the upper main body structure is provided with a joist structure connected with the upper main body structure, and the joist structure is supported by a pile structure. And thick broken stone hardcore layers in contact with the upper main body structure are further paved between the beam structures. The middle of the overhead roadbed structure is hollow, the overhead roadbed structure has the advantages of being small in filler amount, light in weight, small in soil body additional stress and capable of remarkably reducing post-construction settlement caused by the additional stress. The overhead roadbed structure is small in structural size in the cross section direction, has the advantage of being small in occupied area, and can save land. The overhead roadbed structure adopts a foundation form of the joists and the cast-in-situ bored piles, has the characteristics of high stability and strong lateral deformation resistance, and is safe and reliable in structure.

The utility model relates to the technical field of pipeline fittings, in particular to a pipeline comprehensive connector convenient for pipeline maintenance, which comprises a mounting seat, an adjusting mechanism, a height control rod, a hold-down ring and a sealing ring, the adjusting mechanism is clamped on the inner side of the top of the mounting seat, and flanges are arranged at the bottom of the mounting seat and the top of the adjusting mechanism. The height control rod is arranged at the bottom of the mounting base and in a flange at the top of the adjusting mechanism in a clamped mode, the adjusting mechanism is sleeved with the pressing ring, and the sealing ring is arranged in the mounting base in a clamped mode. Meanwhile, the expansion joint capable of effectively achieving the buffering and protecting effects is additionally arranged inside, the risks of pipeline damage and connecting position leakage are reduced, the pressing ring exerts pressure on the sealing ring, the contact effect of the sealing ring, the installation base and the insertion pipe is more ideal, and the sealing effect is better achieved.

The invention relates to an early strength concrete material for an expansion joint anchoring area and a preparation method thereof, and relates to the technical field of building materials, the early strength concrete material for the expansion joint anchoring area comprises the following components in parts by mass: gel master batch, coarse aggregate, fine aggregate, silica fume, mineral powder and a polycarboxylic acid water reducer; the gelling master batch is prepared from the following components in parts by mass: tricalcium silicate, anhydrous calcium sulphoaluminate, polyvinyl alcohol, polypropylene fiber and water; the preparation method comprises the steps of gelling master batch preparation, shearing and flaking, and mixing and forming. According to the early-strength concrete material for the expansion joint anchoring area and the preparation method of the early-strength concrete material, the concrete in the anchoring area is modified by using an organic matter as a crystal nucleus, so that a compact and ordered organic-inorganic cross-linked structure with a biomimetic structure is formed, and the early-strength performance and tensile toughness of the concrete are remarkably improved.

The present invention relates to the technical field of waterproofing expansion joints in construction projects, specifically a waterproofing structure for expansion joints in construction projects, comprising two groups of plywood symmetrically arranged on both sides of a mounting body, two groups of symmetrically arranged round rods fixedly mounted on opposite surfaces of the two groups of plywood, and the round rods slidably inserted into the interior of the mounting body, the ends of the two groups of round rods located on the same side are fixedly connected to strip plates, and the strip plates are elastically connected to the inner wall of the mounting body through connecting springs sleeved on the surfaces of the round rods, two groups of traction ropes are symmetrically mounted on one side of the two groups of strip plates near the middle of the mounting body, and the traction ropes are staggered, and the ends of each group of traction ropes are fixedly connected to a reel, a trigger rod is inserted into the interior of the reel, and two groups of matching teeth are sleeved on the surface of the trigger rod. The present invention enables quick installation when waterproofing expansion joints through the coordinated use of various components, saving time and speeding up the process.

The application discloses a telescopic joint template and relates to the technical field of building construction, which solves the cracking problem in the process of early strength formation of concrete, and the technical scheme is as follows: the template comprises a first template and a second template, the first template and the second template are rotationally connected through a hinge assembly, a rubber pad is arranged between the first template and the second template, a plurality of first through holes are formed in the side walls of the first template and the second template close to the rubber pad, the first template and the second template are connected through a plurality of first bolts, the first bolts penetrate through the first through holes, and nuts are threadedly installed on the first bolts. The rubber pad arranged between the templates, the rubber sleeve on the pull rod and the long hole with a gap on the hinge are used to buffer the deformation of the template, the friction of the template is released, the friction is not directly transmitted to the concrete, and thus the cracking of the concrete is avoided.

The utility model relates to the technical field of anchor bolts, and particularly discloses a plastic anchor bolt special for maintenance of an outer wall thermal insulation layer, the plastic anchor bolt comprises a metal screw and a plastic expansion sleeve, and a plastic disc is arranged at the top of the plastic expansion sleeve; a cavity for accommodating the metal screw is formed in the plastic expansion sleeve; the upper portion of the plastic expansion sleeve is a sleeve, the lower portion of the plastic expansion sleeve is an anchoring end, a glue injection hole communicated with the cavity is formed in the sleeve, and a glue injection sealing film is arranged between the glue injection hole and the anchoring end. Due to the expansion gap formed in the middle of the anchoring end and the protrusions and the recesses in the outer wall, after the anchor bolt is installed, the anchor bolt can be better meshed with a base material, the anchoring strength is improved, and the anti-drawing performance of the anchor bolt is improved. The glue injection sealing film is arranged between the glue injection hole and the anchoring end, so that glue liquid can be prevented from leaking to other places during glue injection, and the glue injection pressure and the glue liquid are ensured to reach required places only through the glue injection hole; and after glue injection, the reinforcing effect of the anchor bolts on the thermal insulation layer is further enhanced.

The invention relates to the technical field of bridge construction, in particular to a bridge sidewalk expansion joint and a construction method.The bridge sidewalk expansion joint comprises an L-shaped foundation plate and a nut arranged on the L-shaped foundation plate, a dustproof plate is arranged on the upper surface of the L-shaped foundation plate, and an expansion joint groove is formed in the upper surface of the dustproof plate; a U-shaped expansion joint groove is formed in the U-shaped expansion joint, a plurality of kidney-shaped holes are formed in the U-shaped expansion joint groove, a sleeve maintenance box is arranged on the upper surface of the U-shaped expansion joint groove, a fixing plate is arranged in the sleeve maintenance box, a cavity between the U-shaped expansion joint groove and the sleeve maintenance box is filled with oxygen asphalt, and bolts sequentially penetrate through the fixing plate, the kidney-shaped holes and a dustproof plate from the interior of the sleeve maintenance box. The nut is in threaded connection with the nut; the industrial problem that a traditional expansion joint must be wholly chiseled away and reconstructed due to damage of internal components is fundamentally solved, and the later maintenance cost and difficulty are greatly reduced.

The utility model discloses a special concrete structure for terrace crack resistance, which comprises a concrete base layer, a concrete strengthening layer is arranged on the upper surface of the concrete base layer, polypropylene fibers are arranged in the concrete strengthening layer, the polypropylene fibers are uniformly distributed, and the polypropylene fibers are arranged in the concrete strengthening layer. A cement-based interface agent coating is arranged on the upper surface of the concrete strengthening layer, a concrete surface layer is arranged on the upper surface of the cement-based interface agent coating, steel fibers are arranged in the concrete surface layer and are uniformly distributed, and a carborundum wear-resistant coating is arranged on the upper surface of the concrete surface layer. By arranging the bottom bars, the surface bars, the polypropylene fibers, the steel fibers and the like, the tensile property and the crack resistance of the concrete structure are improved, and cracks are effectively reduced; by arranging the water pipes, the expansion joints and the expansion reinforcing belts, the anti-cracking effect is further enhanced, the service life of the terrace is prolonged, and the structural stability and practicability are improved.

The utility model provides a drainage structure of an expansion joint zone of a basement top plate, which is characterized in that a strip-shaped convex part is horizontally arranged along the front-back direction, is provided with a drainage channel along the front-back direction, is positioned between a front frame beam and a rear frame beam and below the basement top plate, and is respectively connected with the strip-shaped convex part and the drainage channel; the bottom of the groove is vertically provided with a long-strip-shaped expansion joint, the long-strip-shaped expansion joint extends in the front-back direction, further extends downwards into the top of the long-strip-shaped convex part and is communicated with the drainage channel, the protective cover plate is horizontally arranged and arranged at the bottom of the groove in the front-back direction to be used for covering the expansion joint and sealing factice to fill the joint, and the drainage pipe is located below the long-strip-shaped convex part. One end is inserted into the bottom of the strip-shaped convex part and is communicated with the drainage channel, and the other end is communicated with a basement sump. The basement roof can be prevented from cracking through the expansion joint structure, meanwhile, seepage water of the expansion joint structure can be drained to a basement sump through the drainage structure, leakage is prevented, and structural safety is guaranteed.

The invention relates to a high-speed rail bridge deck waterproof construction process, and belongs to the technical field of road and bridge construction. Comprising the following steps in sequence: grinding a base surface, spraying a waterproof coating, paving a waterproof coiled material, paving waterproof concrete, finishing the surface, cutting an expansion joint, and spraying water, laminating and curing. An automatic grinding machine is used for grinding a base plane, and an automatic spraying machine is used for spraying waterproof paint; paving the waterproof coiled material by using a waterproof coiled material paving and sticking machine; paving waterproof concrete by using a mini concrete vibrating and leveling machine; surface finishing and expansion joint cutting are conducted through a mini concrete surface finishing and joint cutting all-in-one machine; a mini maintenance truck is used for water spraying, film covering and maintenance; the waterproof coiled material paving machine, the mini-type concrete vibrating and leveling machine, the mini-type concrete surface-finishing and joint-cutting all-in-one machine and the mini-type maintenance truck all walk on the retaining wall during working. According to the technical scheme, waterproof construction of the narrow area on the high-speed rail bridge floor is designed, walking of special equipment is conducted through the retaining wall, and full-mechanical construction is achieved.

The utility model discloses railway bridge expansion joint cleaning device, including trolley and motor, the middle part of trolley is installed with the mounting seat that can go up and down, and the motor is installed in the top of the supporting plate, and the loading box, supporting plate are located above the trolley ground plate, and the bottom plate is located below the trolley ground plate, and spring a is sleeved on every stand, and the upper end of spring a supports the bottom of supporting plate, and the upside of bottom plate is installed with the horizontal pivot through the bearing seat, and one end of pivot projects to the side of trolley and is installed with the cleaning disc subassembly, and the other end of pivot is connected transmission through the pulley subassembly between the output shaft of motor, and the cleaning disc subassembly includes spline shaft and two discs, and two discs are installed with spline shaft and can adjust the interval, and two discs are connected with several even distribution steel wire ropes between the edge. Utilize the rotation of cleaning disc subassembly to clean the sundries in expansion joint, and the width of cleaning disc subassembly can adjust and adapt to the expansion joint of different width, and the compatibility is good.

The application relates to the technical field of bridge expansion joints, in particular to a bridge expansion joint connecting device and a construction method thereof, which comprises special-shaped steel bars connected with left and right beam bodies, and the special-shaped steel bars on the left and right sides are connected through upper assemblies and lower assemblies; sliding rails are arranged on the horizontal planes of the special-shaped steel bars on the left and right sides, and nuts are embedded in the sliding rails; recesses are arranged at the lower ends of the special-shaped steel bars on the left and right sides, and shells are arranged in the recesses; the upper assembly comprises a first upper pressing plate, a second upper pressing plate, a third upper pressing plate and a fourth upper pressing plate, the first upper pressing plate, the second upper pressing plate, the third upper pressing plate and the fourth upper pressing plate are sequentially connected through a screw rod from left to right, and the outer side ends of the first upper pressing plate and the fourth upper pressing plate are connected with the nuts in the sliding rails on the special-shaped steel bars on the left and right sides through screws. The application can change different angles according to the deformation of the bridge and the driving change of the vehicle, so as to adapt to the situation, effectively avoid the harm of expansion joint height difference and bridge head bumping, and increase the service life of the device.

This utility model provides an expansion joint cleaning device, comprising: a suction frame connected to a garbage collection bin for sucking garbage into the garbage collection bin; a suction assembly connected to a high-pressure centrifuge, wherein there is at least one suction assembly, which is fixed downwardly at least on one side of the suction frame for sucking up smaller pieces of garbage from the road and bridge expansion joint; a spray washing assembly hinged to the upper part of the suction assembly for rinsing up smaller pieces of garbage from the road and bridge expansion joint; and a sealing assembly rotatably installed at the lower part of the suction assembly for sealing the suction assembly. This utility model cleans the internal gaps of the expansion joint through high-pressure washing by the spray washing assembly, regardless of the depth of the expansion joint; and sucks up mud, garbage, and water used for cleaning from the expansion joint through the suction force of the suction assembly, achieving not only thorough cleaning of the internal gaps of the expansion joint but also collecting mud, garbage, and cleaning water all at once, ensuring a clean and aesthetically pleasing work site.

1. The name of the design product: telescopic device (modular easy-to-maintain D240 type). 2. The use of the design product: used for the expansion joint between the two beam ends, the beam end and the abutment or the hinged position of the bridge. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view 1.

The utility model relates to the technical field of radio frequency coaxial connectors, in particular to an anti-reversion threaded radio frequency coaxial connector, which comprises a positive contact, an anti-reversion device and a negative contact, the anti-reversion device is fixedly connected to one end of the positive contact, and the negative contact is spirally connected to one end, close to the anti-reversion device, of the positive contact. An expansion joint is installed on the inner side of the negative contact, one end of the positive contact and one end of the negative contact are fixedly connected with a connecting line, and a protective sleeve is installed on the outer side of the connecting line. The expansion joint comprises an end connecting ring, a damping groove is formed in one side of the end connecting ring, one end of a positive contact piece is installed on the inner side of the damping groove, a corrugated pipe is fixedly connected to the other side of the end connecting ring, and an installation through hole is formed in the center of the end connecting ring. The size change of the positive contact piece and the negative contact piece caused by thermal expansion and cold contraction is effectively compensated, and the service life of the connector is prolonged.

The present invention relates to an expansion joint for a cable tray for construction, comprising: a variable rail (20) whose spacing between each other changes due to thermal expansion and contraction caused by temperature changes; a pair of pivot pins (30) each installed on the outer side of the variable rail (20); a rotation center end (41) supported by the pivot pin (30), and a pivot end (42) that extends toward each other by the same length and overlaps in a V-shape to pivotally connect, and two pairs of V-links (40) positioned parallel to each other with a constant vertical spacing; and a connecting rod (43) that pivotally connects both ends to the pivot end (42) so as to cross vertically between the pivot ends (42) to form a symmetrical parallelogram link together with the V-links (40).

This invention discloses a method for overlapping construction of waterproofing systems in existing subway lines. It relates to the field of underground engineering waterproofing construction technology and includes: Step 1, current status investigation and deformation assessment; Step 2, overlapping structure system design; Step 3, key material selection and process matching; Step 4, refined overlapping construction process; and Step 5, full inspection after each process. This invention's method for overlapping construction of waterproofing systems in existing subway lines, through Step 1, involves structural deformation monitoring and analysis and diagnosis of the existing waterproofing layer; Step 2, involves deformation adaptation structure design and differential deformation compensation design; Step 3, involves material selection and process innovation; Step 4, involves base treatment, interface treatment, expansion joint and node construction, and reinforcement layer construction; and Step 5, involves process inspection. This method, tailored to the characteristics of existing subway lines, enables the effective combination of different waterproofing materials, adapts to continuous deformation, and ensures long-term reliability.

The objective is to minimize the height difference between the first and second floor sections and the independent boards, even when using thick independent boards to connect the first and second floor sections, and to limit the range of movement of the independent boards relative to the first or second floor section. [Solution] The floor expansion joint comprises a first floor section provided in one building, a second floor section provided in the other building, separated from the first floor section and arranged along the same floor surface as the first floor section, an independent plate positioned between the first and second floor sections and arranged along the floor surface, a support section attached to the first or second floor section and supporting the independent plate from below so that the independent plate can move along the floor surface, and a limiting section provided on the lower surface of the independent plate and limiting the range of movement of the independent plate relative to the support section.

The utility model relates to bridge expansion joint device technical field, and concretely speaking, the utility model relates to a high -speed railway beam water stop expansion joint device, including the elastomer (1) in expansion joint, be equipped with connecting rod (2) on the elastomer (1), the utility model water stop expansion joint device installation is convenient, is not limited by climate and construction condition, and the elastomer can be prefabricated according to bridge expansion joint width and expansion amount in advance, is not limited by bridge expansion amount, and the scope of application is wider, after installation, the device and the extrusion force between the beam body are generated, the connecting rod is arranged in the device interior and can enhance the extrusion force, and the interface is not easy to crack, the connecting rod and the elastomer structure of arch structure structure connection are firm, simplify the installation and removal operation of the device, and simultaneously reduce production cost.