39 results about "Seismic displacement" patented technology

The invention relates to an earthquake experiencing device, comprising an experiencing room, a first oil cylinder, an electro-hydraulic servo valve, a hydraulic pressure power source and an oil source auxiliary equipment which is used for guaranteeing constant output of the hydraulic pressure; the experiencing room is arranged on a desk frame; the desk frame can be arranged on a first motion guide in a horizontal slipping way; a rod of the first oil cylinder is in rigid connection with the desk frame; the first oil cylinder is the double-rod cylinder; the first oil cylinder is connected with the electro-hydraulic servo valve which is connected with the hydraulic pressure power source; the hydraulic pressure power source is connected with the oil source auxiliary equipment; the electro-hydraulic servo valve is connected with a seismic modeling controller which is used for calculating a valve port opening signal according to the seismic displacement data and outputting the valve port opening signal to the electro-hydraulic servo valve. The invention provides the earthquake experiencing device which can reproduce the real earthquake well and strengthen the experience effect, and has the advantage of rational structure.

An expansion joint for building panels, such as concrete floor slabs, comprises a U-shaped drape of a flexible, fire-resistant, impermeable material such as stainless steel foil. The opposite legs of the U-shaped drape are fastened between respective adjacent slabs and a mat of expandable fire-resistant material inserted within the U-shaped drape between the slabs. The impermeability and flexibility of the drape, coupled with the insulating property of the mat provide an inexpensive, effective fire seal between building panels that can also accommodate seismic displacement.

The invention belongs to the technical field of a bridge attachment, in particular to a bridge expansion joint with multidirectional displacement function, wherein a fixed comb jointing unit and a movable expansion comb jointing unit are unit modules, horizontal mutual-insert ratcheting connection pairs are formed at the clearance end of two adjacent beam bodies, a fixed comb body is arranged in a T-shaped way, a movable comb body is arranged in a reversed-T-shaped way, not only can the horizontal displacement requirement for a longitudinal bridge direction be satisfied, but also through a related flexible connection, the rotation of the movable expansion comb jointing unit relative to a rotating bearer of a mounting seat, the transverse bridge direction sliding in a sliding groove, and the rotation relative to a connecting shaft are satisfied, therefore the outstanding features of the requirements for the longitudinal direction, transverse direction, twisting, vertical turning and seismic displacement of the bridge, the concrete pouring is not required, the requirement for the rabbet depth is reduced, the installation is rapid and convenient, the installation engineering jobs are fully optimized, and the construction efficiency and the safety are improved.

The invention provides friction pendulum supporting bases and a bridge damping and shock insulation system. Each friction pendulum supporting base comprises an upper base plate assembly, a lower baseplate assembly and a spherical crown lining plate. The spherical crown lining plate is slidingly arranged between the upper base plate assembly and the lower base plate assembly, the lower base plateassembly comprises a baseplate, a lower supporting base plate and a locking assembly, and the lower supporting base plate is slidingly arranged between the baseplate and the spherical crown lining plate; the locking assembly is arranged between the lower supporting base plate and the baseplate, and the locking assembly locks the sliding positions of the baseplate and the lower supporting base plate when the earthquake displacement is larger than the temperature displacement; the sliding friction coefficient of the baseplate and the lower supporting base plate is smaller than that of the spherical crown lining plate and the upper base plate assembly and smaller than that of the spherical crown lining plate and the lower base plate assembly. The bridge damping and shock insulation system comprises a fixed supporting base, a transverse supporting base and the two friction pendulum supporting bases, one friction pendulum supporting base is a vertical supporting base, and the other frictionpendulum supporting base is a multidirectional supporting base. The friction pendulum supporting bases and the bridge damping and shock insulation system have the advantages of being good in dampingand shock insulation effect, high in safe reliability, good in smoothness and the like.

The invention discloses a method for determining co-seismic displacement by using a single GNSS receiver. The method comprises: a precision satellite orbit and satellite clock correction information are received and stored; cycle slip detection is carried out on high-frequency carrier phase observation data received by a GNSS monitoring station; a general distance error equation of an undifferenced carrier phase is constructed and various errors are corrected; and then on the conditions that an accurate coordinate of an observation station before an earthquake is used as a known condition, the fuzziness of the carrier phase during the earthquake is supposed not to change, and the flow layer delay change is ignored, instantaneous surface displacement of the observation station within the earthquake is calculated by using a dual-frequency ionosphere-free combination observation value and a precise ephemeris, so that co-seismic displacement is obtained. According to the method, the characteristics that the precise observation station coordinate before the earthquake is known and the earthquake lasting time is not long are utilized fully; a fuzziness solution problem does not need to be considered during the specific execution process; the long-time initialization process in precise single-point positioning is avoided; and the overall calculation module becomes simple; and the method is suitable for a real-time earthquake monitoring field.

The invention provides a lead-core damping pot rubber bearing. The rubber bearing comprises a base pot transversely arranged, a rubber pad arranged in the base pot, a piston placed on the rubber pad and extending out of the base pot, and an upper bearing plate placed on the piston, wherein the piston is shaped like a Chinese character 'ao' with an opening facing upward, the upper bearing plate is inserted into the upward-facing opening of the piston and extends out of the piston, the upper bearing plate and the piston are fixed through a shear-resistant pin vertically arranged, a round seismic displacement trough is formed between the upper bearing plate and an internal lateral surface of the piston in a spaced mode, a torus rubber piece is clamped between an internal lateral wall of the base pot and the piston, a reserved cavity is formed between the upper bearing plate and the piston, the reserved cavity is internally provided with a lead-core damping rod which is vertically arranged, the top end of the lead-core damping rod is embedded in the upper bearing plate, the bottom end is embedded in the piston, and a circumferential deformation space is formed between the central part of the lead-core damping rod and the lateral walls of the reserved cavity. According to the rubber bearing, a damping component is arranged inside the bearing, the damping and energy-dissipation effects of the bearing are good, and the structure of the bearing is compact. The invention further provides a method of damping the rubber bearing of the lead-core damping pot.

The invention relates to earthquake recording equipment, in particular to an earthquake displacement recorder of a shock-insulation building, which comprises a pen holder, a cartridge, a buffer spring and a recording plate, wherein the upper end of the pen holder is fixed on an upper structural body; a cartridge hole is arranged on the lower end face of the pen holder, the cartridge is arranged in the cartridge hole, and can scratch on the recording plate when the earthquake occurs; the buffer spring is arranged between the bottom in the cartridge hole and the cartridge; and the recording plate is fixed on a lower structural body and is fixed on a low steel plate by a bolt as well as used for generating recording data because of being scratched by the cartridge. The invention has simple and skillful structure, strong reliability, low cost, high working stability and lower use cost, can simultaneously record the direction and the distance of horizontal displacement of a shock-insulation layer when the earthquake occurs, and truly reflects the integral moving situation of the shock-insulation building.

The invention discloses a replaceable prefabricated shock-absorbing pier comprising telescopic unbonded prestressed steel strands, wherein one end of each telescopic unbonded prestressed steel strandis anchored to the top of a pier body and the other end of each telescopic unbonded prestressed steel strand is anchored to the end of a sliding block in a pile cap so as to be connected to a slidingdevice and assembling column blocks pre-buried in the pile cap. Under the action of small earthquakes and moderate earthquakes, in the rocking process of the prefabricated shock-absorbing pier, the unbonded prestressed steel strands can transform horizontal seismic displacement of a pier top into horizontal sliding of the sliding block in the pile cap and dissipate energy through friction so as tocontrol the deformation of the pier top of the prefabricated pier to be in a reasonable range. Adjusting bolts can adjust the vertical pressure between the sliding block and a friction surface so asto adjust the sliding friction force to adapt to shock-absorbing control requirements of prefabricated piers of different sizes. When a major earthquake occurs, position-limiting blocks at the ends ofthe sliding device in the pile cap can instantly lock the horizontal displacement of the sliding block so as to lock the horizontal displacement of the pier top to ensure that excessive horizontal displacement and collapse of the prefabricated pier can be avoided in the event of the major earthquake.

The invention discloses a fabricated anti-seismic energy dissipation wall and a construction method thereof.The fabricated anti-seismic energy dissipation wall comprises a box body, a viscous damping fluid, a viscous-friction plate, anda damping plate.The box bodyis filled with the viscous damping fluid, and the viscous-friction plate and the damping plate are botharranged in the box body; under initial conditions, an energy dissipation reinforcement structure corresponds to a third plate of the damping plate, and the length,inthe direction of the length of a beam, of the third plate is greater than the length,inthe direction of the length of the beam, of the energy dissipation reinforcement structure. By adopting the fabricated anti-seismic energy dissipation wall and the construction method thereof, different energy dissipation effects under different seismic displacement can be improved.

The invention belongs to the technical field of a bridge attachment, in particular to a bridge expansion joint with multidirectional displacement function, wherein a fixed comb jointing unit and a movable expansion comb jointing unit are unit modules, horizontal mutual-insert ratcheting connection pairs are formed at the clearance end of two adjacent beam bodies, a fixed comb body is arranged in a T-shaped way, a movable comb body is arranged in a reversed-T-shaped way, not only can the horizontal displacement requirement for a longitudinal bridge direction be satisfied, but also through a related flexible connection, the rotation of the movable expansion comb jointing unit relative to a rotating bearer of a mounting seat, the transverse bridge direction sliding in a sliding groove, and the rotation relative to a connecting shaft are satisfied, therefore the outstanding features of the requirements for the longitudinal direction, transverse direction, twisting, vertical turning and seismic displacement of the bridge, the concrete pouring is not required, the requirement for the rabbet depth is reduced, the installation is rapid and convenient, the installation engineering jobs are fully optimized, and the construction efficiency and the safety are improved.

The invention provides a seamless treatment method for cement decoration hanging plates of a building external wall. The seamless treatment method includes the following steps of sealing gluing treatment of inter-plate gaps, mounting of separation blades and lining formworks, pouring of concrete post-pouring strip belts, and dismounting of the separation blades. According to the seamless treatment method for the cement decoration hanging plates of the building external wall, the inter-plate gaps, inside post-pouring seams, between every two adjacent hanging plates are filled with sealing glue, and thus system sealing is formed so as to meet the waterproof requirements of the hanging plates of the external wall; after the concrete post-pouring strip belts are arranged at the hanging plate joints, the preset spacing is formed between the concrete post-pouring strip belts and the hanging plates, the expansion-retraction effect, the seismic displacement effect, the manufacturing and construction error, the wind load displacement effect, the expansion-retraction and creep effects in concrete preparation and the like caused by the change of temperature and humidity can be met; and the outer walls of the concrete post-pouring strip belts can be arranged to be of a concave-convex structure corresponding to decorative layers of the hanging plates, thus the appearance of the joints is close to the appearance of the hanging plates, and the attractiveness of the external wall is improved.

The invention provides a double-rotation structure between a converter transformer and a converter valve applied to a converter station. The double-rotation structure comprises converter transformers(1) and converter valves (12); each phase converter transformer (1) is separately connected with each independent converter valve (12) in an electrically conductive manner; rotational joint fittings (10) and second suspension insulators (15) are disposed between at least one phase converter transformer (1) and the corresponding converter valve (12); each rotational joint fitting (10) comprises anupper rotational joint fitting (101) and a lower rotational joint fitting (102); each upper rotational joint fitting (101) is connected with a suspension frame (14) through each second suspension insulator (15); and each upper rotational joint fitting (101) is movably connected with each lower rotating joint fitting (102) in a relative rotation manner. Therefore, under seismic conditions, the seismic oscillations of a converter valve tower in different directions will be converted into a rotational motion of the rotational joint fittings to mitigate or even offset the seismic displacement of the converter valve tower, and the anti-seismic performance of electrical equipment such as the converter valve and the like is further improved.

The invention provides a steel damping energy-consuming type spherical steel support applicable to bridge and building structures. The steel damping energy-consuming type spherical steel support comprises an anchor bar, an upper seat plate, a stainless steel plate, a plane wear-resistant plate, a spherical crown lining plate, a spherical wear-resistant plate, a lower seat plate, a lower seat plate flange, an upper seat plate flange and a steel damping element; the upper seat plate flange is fixedly connected with the upper seat plate and protrudes downward to be in clearance fit with the lower seat plate; the lower seat plate flange is arranged on the periphery or the two sides of the lower seat plate; the steel damping element is connected between the lower seat plate flange and the upper seat plate flange; the upper end of the upper seat plate flange is wide; the lower end of the upper seat plate flange is narrow; the upper seat plate flange has an inverted trapezoidal section; and the inner edge line of the inverted trapezoidal section can be a straight line or an arc line. According to the steel damping energy-consuming type spherical steel support, except that normal use situations of bridges or buildings can be met, seismic energy can be dissipated when the seismic displacement of the support is large, the support can be effectively protected against being destroyed and falling off, and the structural safeties of the bridges or the buildings are protected. The steel damping energy-consuming type spherical steel support has the advantages of simple structure, simple and convenient mounting and easy maintenance and changing.

The invention provides a shock absorbing device, comprising a top plate, a bottom plate and intermediate damping members arranged between the top plate and the bottom plate, wherein the intermediate damping members are capable of producing lateral horizontal movement and horizontal rotation along the top plate, and the intermediate damping members are connected with the bottom plate and are capable of producing lateral horizontal movement along the bottom plate. The intermediate damping members are uniformly arranged laterally along the top plate and the bottom plate, and each intermediate damping member comprises two arc-shaped steel structures that are symmetrically arranged and connected with each other into a whole. The shock absorbing device provided by the invention can adapt to thelateral seismic displacement of a bridge, provide additional damping dissipation input energy for the bridge and provide lateral yielding force for the bridge to prevent beam falling when meeting theearthquake or hurricane.

The invention discloses a novel high-damping rigidity-variable extruding type earthquake isolation device and relates to the technical field of structural earthquake isolation. The device comprises anupper cover plate, an upper clapboard, a groove, a graphene-polyvinyl chloride composite material layer, an upper concave extruding block, a composite high-damping material layer, a lower convex extruding block, a rigidity-variable cylinder and a lower bottom plate. Compared with a traditional rubber support earthquake isolator, the device disclosed by the invention has the advantages that when the earthquake displacement is smaller, the rigidity and the damping energy consumption property are lower, and along with the increase of the displacement, the upper concave extruding block and the lower convex extruding block extrude a chlorinated butyl rubber-phenolic resin composite high-damping material, so that the damping energy consumption property is increased and the extruding type earthquake isolation energy consumption capability is enhanced; and when the earthquake displacement is larger, the rigidity and the damping energy consumption property are maximum, the upper cover plate drives the rigidity-variable cylinder to work together, and the STG in the rigidity-variable cylinder changes the rigidity of the earthquake isolation device, wherein the composite high-damping materialincreases the damping energy consumption property.

The invention discloses a method for high-resolution determination of seismic event P-wave reverse azimuth and slowness. The working steps of the method are that: supposing that the array is composedof N stations, taking the nearest station from the center of the array as the reference station and setting the station as the origin; the vertical component seismic displacement waveform records of the N stations are read, and instrument response removing and de-mean processing is performed on the records and the same sampling rate is obtained through resampling; the waveform records of all the stations in the step 2 are aligned according to the transmitting array time and the time window is selected; and the selected seismic records are windowed and subjected to Fourier transform so as to obtain the record spectrum, i.e. the observation vector. The method has the beneficial effects that the high-resolution seismic event P-wave reverse azimuth and slowness parameters can be provided by the method in comparison with the conventional station array FK algorithm; and the P-wave reverse azimuth and slowness parameters of the seismic event can be inversed quickly by using the constraint ofthe sparse characteristic of the sources in space distribution.

The invention relates to an earthquake dynamic reliability analysis method for a slope support structure. The method comprises the following steps of generating a series of random earthquake dynamic acceleration time history based on a random earthquake dynamic model; establishing a finite element dynamic analysis model, and calculating to obtain a series of support structure seismic displacementtime history; establishing and solving a generalized probability density evolution equation of the slope supporting structure to obtain a numerical solution of a displacement probability density function of the supporting structure at each moment; and obtaining an earthquake dynamic reliability result according to the numerical solution of the support structure displacement probability density function at each moment. Compared with the prior art, a series of seismic oscillation acceleration time history is generated on the basis of the random seismic oscillation model to represent randomness of seismic oscillation, solving is carried out on the basis of finite element dynamic analysis, and seismic horizontal displacement of the slope supporting structure is adopted as an evaluation index of the anti-seismic property of the supporting structure; intensity and frequency non-stationary characteristics of an earthquake, an amplification effect of seismic oscillation and dynamic nonlinearity of rock-soil body parameters are considered.

The invention discloses a high-pier long-span narrow-bridge high-performance anti-seismic continuous rigid frame structure system which comprises multiple bridge piers, bridge abutments and a main girder. Each bridge pier adopts a transverse variable-cross-section sloping structure from the pier top to the pier bottom, and the transverse width of the pier top of each bridge pier is larger than the transverse width of the girder bottom of the main girder; expansion joints are formed between the two ends of the main girder and the bridge abutments, and a longitudinal constraint structure is arranged between one end of the main girder and the corresponding bridge abutment. According to the bridge structure system, due to the fact that each bridge pier adopts the condition that the transverse width of the pier top of the bridge pier is larger than the transverse width of the girder bottom of the main girder, each bridge pier adopts variable-cross-section design to form a transverse robust structure, and the longitudinal constraint structure is arranged between the main girder and the bridge abutment, it is guaranteed that the longitudinal rigidity and the transverse rigidity of the bridge system both can meet the seismic displacement control design requirement, and meanwhile the internal force of bridge pier longitudinal seismic design calculation is reduced, the safety of the bridge is guaranteed, the transverse seismic design strength and rigidity requirements are improved, and the high-pier long-span narrow-bridge high-performance anti-seismic continuous rigid frame structure system is especially suitable for bridge design requirements of mountainous super high bridge piers, large spans and narrow bridges.

The invention relates to a combined multi-stage three-direction seismic bridge limiting device based on BRB technology. The device includes a beam body and a bridge pier, and includes two sets of buckling restraint support structures arranged in a V-shape, a limit sliding connection component, and a spherical hinge. And the ring limit cable. The two ends of the buckling restraint support structure are respectively connected with spherical hinges and rigid smooth spheres. In the case of small displacement of the beam body, the rigid smooth spheres slide relatively freely in the channel of the limit sliding connection component; when the beam body has a large earthquake displacement , the buckling-constrained support structure consumes seismic energy through elastic-plastic deformation. The annular limit cable plays a limiting role after the buckling restrained support structure fails in tension. According to the anti-seismic concept of multi-level fortification, the invention combines the technology of traditional buckling restraint support structure and cable stopper, which can effectively limit the displacement of the beam body under longitudinal, lateral and vertical earthquake vibration, and has a simple and reliable structure.

The invention relates to the technical field of earthquake monitoring, specifically to an earthquake displacement recording device. The device comprises a device body; the device body comprises an upper measuring rod, a lower measuring rod and a recording plate; the upper measuring rod is upwards connected with an upper mounting foundation and downwards connected with the lower measuring rod; thelower measuring rod is downwards connected with a probe; the tip of the probe is downwards in contact with the recording plate; and the recording plate is connected with the lower mounting foundation;the lower measuring rod is provided with a first inner cavity with a downward opening; a spring is arranged in the first inner cavity; and the upper end of the probe extends into the first inner cavity and contacts with the spring. The device is simple in structure and easy to manufacture, popularize and use; due to the fact that the device body is of a pure mechanical structure, the hidden danger of instability caused by a traditional electronic and mechanical combined structure with a sensor as a detection element is eliminated, the working stability is good, the service life is long, and the real-time performance is good.

The invention provides a steel damping energy-consuming type spherical steel support applicable to bridge and building structures. The steel damping energy-consuming type spherical steel support comprises an anchor bar, an upper seat plate, a stainless steel plate, a plane wear-resistant plate, a spherical crown lining plate, a spherical wear-resistant plate, a lower seat plate, a lower seat plate flange, an upper seat plate flange and a steel damping element; the upper seat plate flange is fixedly connected with the upper seat plate and protrudes downward to be in clearance fit with the lower seat plate; the lower seat plate flange is arranged on the periphery or the two sides of the lower seat plate; the steel damping element is connected between the lower seat plate flange and the upper seat plate flange; the upper end of the upper seat plate flange is wide; the lower end of the upper seat plate flange is narrow; the upper seat plate flange has an inverted trapezoidal section; and the inner edge line of the inverted trapezoidal section can be a straight line or an arc line. According to the steel damping energy-consuming type spherical steel support, except that normal use situations of bridges or buildings can be met, seismic energy can be dissipated when the seismic displacement of the support is large, the support can be effectively protected against being destroyed and falling off, and the structural safeties of the bridges or the buildings are protected. The steel damping energy-consuming type spherical steel support has the advantages of simple structure, simple and convenient mounting and easy maintenance and changing.

The invention discloses a replaceable assembled shock-absorbing bridge pier, which comprises stretchable unbonded prestressed steel strands, one end of which is anchored to the top of the bridge pier body, and the other end is anchored to the end of the sliding block in the cap to connect the pre-buried Slides and assembled columns in the caps. Under the action of small earthquakes and moderate earthquakes, the unbonded prestressed steel strands can convert the horizontal seismic displacement of the top of the pier into the horizontal sliding of the sliding block in the cap and dissipate energy through friction during the swaying process of the prefabricated shock-absorbing pier. To control the deformation of the pier top of the assembled pier within a reasonable range; the adjusting bolt can adjust the vertical pressure between the friction block and the friction surface to adjust the sliding friction, which can adapt to the shock absorption control requirements of the assembled pier of different sizes; when a large earthquake occurs , the limit block at the end of the sliding device in the cap can instantly lock the horizontal displacement of the sliding block, and then lock the horizontal displacement of the pier top, so as to ensure that the prefabricated pier will not collapse due to excessive horizontal displacement under a large earthquake .

The invention provides a lead-core damping pot rubber bearing. The rubber bearing comprises a base pot transversely arranged, a rubber pad arranged in the base pot, a piston placed on the rubber pad and extending out of the base pot, and an upper bearing plate placed on the piston, wherein the piston is shaped like a Chinese character 'ao' with an opening facing upward, the upper bearing plate is inserted into the upward-facing opening of the piston and extends out of the piston, the upper bearing plate and the piston are fixed through a shear-resistant pin vertically arranged, a round seismic displacement trough is formed between the upper bearing plate and an internal lateral surface of the piston in a spaced mode, a torus rubber piece is clamped between an internal lateral wall of the base pot and the piston, a reserved cavity is formed between the upper bearing plate and the piston, the reserved cavity is internally provided with a lead-core damping rod which is vertically arranged, the top end of the lead-core damping rod is embedded in the upper bearing plate, the bottom end is embedded in the piston, and a circumferential deformation space is formed between the central part of the lead-core damping rod and the lateral walls of the reserved cavity. According to the rubber bearing, a damping component is arranged inside the bearing, the damping and energy-dissipation effects of the bearing are good, and the structure of the bearing is compact. The invention further provides a method of damping the rubber bearing of the lead-core damping pot.

The invention discloses a displacement design spectrum method suitable for Chinese aseismic design specifications. The invention relates to a displacement design spectrum method suitable for China aseismic design specifications, aims to overcome the defect that a displacement design spectrum is not given in China 'Building Aseismic Design Specifications'. A displacement design spectrum with a clear mathematical expression is given by increasing two parameters of a control point period TD and a peak ground displacement PGD; a large amount of actual seismic oscillation is taken as a data basis, and parameter values of a displacement design spectrum are given based on a seismic oscillation selection method of spectrum matching; the displacement design spectrum and the acceleration design spectrum can be mutually converted; and when the period is smaller than 5Tg (standard design spectrum characteristic period), the acceleration design spectrum is consistent with a standard acceleration design spectrum, and the method can be used for determining the seismic displacement requirement of a building structure in a displacement-based aseismic design method.

The invention relates to the field of electrical engineering, in particular to a device for introducing circuit sealing into the sealing area of ​​a nuclear power plant's multi-layer containment shell. The device may be used in penetrations through internal and external walls that are susceptible to displacement relative to each other by earthquakes or thermal expansion of the walls and penetrations. The object of the present invention is to improve the reliability of sealed cable entries using difficult-to-bend high voltage wires. In order to achieve the proposed purpose, there is provided a sealed cable entry device passing through the outer wall and inner wall of the containment vessel of a nuclear power plant, which includes an embedded sleeve (3) arranged in the inner wall (1), said sleeve The entry portion (44) of the cable (2) is fixed rigidly inside. A device for compensating relative movement between the cable (2) and the outer wall (11) is installed on the outer wall (11) along the axis of the bushing (3). The compensating device has a pipe (19) with a bellows (24) on the outer end (20) of the pipe and on the other end (21) of the pipe on the inner surface (18) of the outer wall (11). A second similar bellows (25) is mounted symmetrically. The active ends (30) and (31) of the bellows (24) and (25) are set in a conical shape, and their inner surfaces (28) and (29) are supports for the outlet portion (46) of the cable (2), said The outlet portion (46) of the cable (2) is freely disposed within the duct (19) with a gap (47) relative to the inner surface (49) of the duct (19). The gap 47 between the sheath (48) of the outer surface of the cable (2) and the inner surface (49) of the pipe (19) is selected according to design calculations. The gap (47) should not be less than the maximum orthogonal thermal-seismic displacement amplitude in one plane of the inner wall (1) relative to the outer wall (11) and the change in coaxial position of the cable (2) in the duct (19).

The invention provides a double-joint connection structure between converter transformers and converter valves. The double-joint connection structure comprises converter transformers and converter valves. Conductive connection is formed between each phase of converter transformer and an independent converter valve. A first rotating joint armour clamp, a first suspension insulator, a second rotating joint armour clamp and a second suspension insulator are arranged between at least one phase of converter transformer and the corresponding converter valve; the two opposite ends of the first suspension insulator are connected with a suspension rack and the first rotating joint armour clamp; and the two opposite ends of the second suspension insulator are connected with the suspension rack and the second rotating joint armour clamp. Conductive connection is formed between the at least one phase of converter transformer and the corresponding first rotating joint armour clamp, second rotatingjoint armour clamp, and converter valve successively. According to the invention, the relatively rotation type movable connection structure is formed between the converter transformers and the converter valves by the first rotating joint armour clamps and the second rotating joint armour clamps, so that the seismic displacement of the converter valve tower is reduced or even cancelled and thus theseismic performance is enhanced.

The invention discloses an anti-earthquake-displacement bridge expansion joint device. The anti-earthquake-displacement bridge expansion joint device comprises a first movable comb plate and a second comb plate, wherein the first movable comb plate and the second comb plate are arranged on a first beam body and a second beam body which are located on the two sides of a bridge expansion joint respectively, comb teeth are arranged on the opposite ends of the first movable comb plate and the second movable comb plate respectively, the comb teeth are arranged in a crossing mode at intervals, the first movable comb plate stretches across the bridge expansion joint so that the tail ends of the comb teeth of the first movable comb can be located above the second beam body, and the first movable comb plate and the second movable comb plate are arranged on the first beam body and on the second beam body respectively in a mode that the first movable comb plate and the second movable comb plate can rotate horizontally relative to the beam bodies. Compared with the prior art, the anti-earthquake-displacement bridge expansion joint device has the advantages that rigid damage on the comb plates and on the whole bridge expansion joint device when earthquake displacement occurs can be effectively avoided, and the shock resistance of the expansion joint device is improved.