15 results about "Aqueduct" patented technology

This invention relates to the field of hydraulic engineering, and more particularly to a method for safety assessment and optimization design of large-flow aqueduct structures. The method includes: collecting displacement, strain, and temperature monitoring sequences based on a triple probe, completing grouping, coordinate and time registration, and establishing a monitoring baseline; constructing a spatial model including support nonlinearity and fluid-structure boundary conditions, applying loading conditions, and obtaining response predictions; aligning monitoring and prediction in time and location, performing hierarchical Bayesian filtering inversion, and obtaining parameter posteriors and structural health; under the integration of in-service monitoring and accelerated degradation characteristics, using multi-task learning to generate material evolution and lifespan intervals, and automatically generating and simulating optimization schemes under reliability and maintainability constraints. This application forms a closed loop from assessment to design, effectively enhancing data comparability, traceability of uncertain information, and adaptability of the scheme to engineering projects.

The utility model provides a kind of aqueduct hoisting structure, belong to aqueduct technical field, it solves the technology problem that the direct connection of aqueduct is carried out by sling, to cause the strength of sling to be reduced possibly due to friction, abrasion in use process, increase the risk of fracture.A kind of aqueduct hoisting structure, including base, two first sliding grooves are set in base top, two support rods are fixedly connected with symmetry in first sliding groove interior, two first clamping plates are symmetrically slidably covered on the surface of two support rods, the moving mechanism for moving first clamping plate is equipped on the surface of two first clamping plates away from support rod side, two first storage grooves are set in the surface of first sliding groove close to two first clamping plates side, two first tension springs one end are fixedly connected in first clamping plate side, two first tension springs other end are fixedly connected in first storage groove interior side.In the utility model, through the setting of base and clamping plate, the phenomenon that sling appears fracture can be reduced.

The utility model belongs to underground pipeline technical field, concretely relates to a shallow burying underpass pipeline trenchless structure. Including pipe shed, pipe shed support and support base, pipe shed is constituted by steel flower pipe, is arranged in rectangular section, steel flower pipe distributes in the top and both sides of rectangular section, pipe shed support adopts I -beam, is arranged on support base, and constitutes the support system with pipe shed together, underpass pipeline is located in the inside of pipe shed, and after construction is completed, passes through the bottom of the structure that is worn, and the clearance between pipe shed and underpass pipeline is filled with medium coarse sand. The steel flower pipe of pipe shed is consolidated with surrounding soil through cement slurry or double slurry grouting, and forms the reinforcement area. The support base is arranged at the bottom of the underground excavation construction area, and the foundation reinforcement treatment is carried out when encountering poor foundation. The structure does not affect the normal operation of the crossed structure during construction, and has little influence on the above structures such as the crossed existing pipeline, aqueduct and irrigation canal.

The application discloses a novel water conservancy aqueduct slot forming machine with large span and large tonnage, which comprises two-span half-length main frames, the main frame comprises a bearing main beam located in the middle part, and front guide beams and rear guide beams are arranged at the two ends of the bearing main beam respectively; supporting legs for supporting the main frame on piers; a hoisting device capable of reciprocating along the main frame; a hanging outer rib system arranged on the bearing main beam, which is connected with an outer mold system; an inner mold system capable of entering and exiting the outer mold system; and a conveying vehicle capable of moving on the top surface of a pouring groove body; the application has the beneficial effects that: the main frame beam adopts a single main beam form, which greatly reduces a series of costs such as manufacturing, transportation, installation and disassembly, and the rotation function of the front auxiliary supporting leg and the transverse movement function of the main supporting leg and the rear auxiliary supporting leg are more conducive to adapting to curve construction.

This invention relates to the field of aqueduct construction technology, and discloses a method for on-site construction of a U-shaped aqueduct body based on a self-propelled trenching machine, as well as the self-propelled trenching machine itself. It aims to solve the technical problems of poor structural adaptability, insufficient construction stability, difficulty in precision control under complex working conditions, and inefficient construction organization when using conventional bridge mobile formwork for the construction of large-span U-shaped thin-shell aqueducts in the prior art. The invention includes the following steps: S1. Equipment assembly and anti-overturning reinforcement; S2. Pre-stressing and positioning of the formwork structure; S3. Installation of reinforcing steel and prestressed structure; S4. Positioning of the inner formwork anti-buoyancy structure; S5. Concrete pouring and curing; S6. Prestressing tensioning and grouting; S7. Equipment demolding and longitudinal movement through holes; S8. Formwork closing and cyclic construction. The self-propelled trenching machine of this invention, by setting a horizontally opening and closing lower hanging beam and a foldable hydraulic inner formwork structure, enables the formwork to accurately adapt to the complex hyperboloid contour and ultra-large width of the U-shaped aqueduct, solving the structural adaptability problem of conventional formwork.

The invention relates to the technical field of aqueduct construction, and discloses an aqueduct U-shaped groove body cast-in-place construction method based on a self-propelled groove building machine and the self-propelled groove building machine. The technical problems that in the prior art, when a conventional bridge moving formwork is used for construction of a large-span U-shaped thin-shell aqueduct, the structural adaptability is poor, the construction stability is insufficient, precision control is difficult under the complex working condition, and the construction organization for connection with a landing section is low in efficiency are solved. The method comprises the following steps: S1, equipment assembly and anti-overturning reinforcement; s2, pre-pressing and positioning a template structure; s3, steel bars and a prestressed structure are installed; s4, an internal mold anti-floating structure is in place; s5, concrete pouring and curing; s6, prestress tensioning and grouting are conducted; s7, equipment demolding and longitudinal movement hole passing are carried out; and S8, mold closing and circulating construction are conducted. According to the self-propelled aqueduct building machine, the lower hanging beam capable of being transversely opened and closed and the foldable hydraulic inner mold structure are arranged, so that the mold plate can accurately adapt to the complex hyperboloid contour and the ultra-large width of a U-shaped aqueduct, and the structure adaptation problem of a common scale frame is solved.

The utility model relates to water conservancy aqueduct construction technical field discloses a kind of mobile formwork for water conservancy aqueduct construction, including bearing frame, the top of bearing frame is fixedly connected with lifting assembly, the top of lifting assembly is fixedly connected with lifting rod, the inner wall top of bearing frame is fixedly connected with support beam.The utility model starts to wind or release rope when setting winding assembly starts, rope is guided under the guidance of wire support, and tensile force or loose force is generated with lifting seat, when needing to lift outer form, winding assembly winds rope, and rope is pulled by lifting seat to make outer form go up;When needing to lower outer form, winding assembly releases rope, and outer form is lowered under the action of its gravity or other auxiliary force, and auxiliary vertical pole mainly resists vertical pressure, and auxiliary vertical pole transmits pressure to bearing frame, and these pressures are shared by bearing frame, to maintain the shape stability of supporting inner mould.

This invention discloses a mobile gantry and construction method for the post-cast strip of cast-in-place box girder in a hydraulic aqueduct. The mobile gantry includes: a main frame arranged laterally above the aqueduct; legs connected to the main frame to support it on both sides of the aqueduct top; lifting and traveling mechanisms on the legs; symmetrically arranged outer rib assemblies at both ends of the main frame, one end of which is rotatably connected to the main frame, and the other end detachably connected to an anchor bracket fixed to the pier top; an outer formwork connected to the outer rib assemblies, which are equipped with a tilting mechanism; a transport vehicle that can move longitudinally along a longitudinal track; and a lifting mechanism installed on the main frame. This invention can meet the construction requirements of post-cast strips under various complex conditions, shortens the overall construction cycle, effectively solves the problems of lack of lifting machinery and difficulty in formwork installation, and increases the adaptability of post-cast strip construction under complex conditions.

The present application relates to the field of hydraulic structure, particularly to a kind of three-dimensional damage fast positioning method of complex aqueduct structure;Acoustic emission or microseismic signal in aqueduct structure is collected, and STA / LTA long-short time window energy ratio method is used to pick up the first arrival time of signal;Curved surface structure model composed of channel surface and side wall is constructed;Parameterization is carried out to cross section, and according to the position relationship of damage point and sensor in parameter space, channel surface propagation path set is constructed;For each pair of damage point and sensor, the path with the minimum path length of channel surface is selected as the shortest propagation path, and the theoretical arrival time is calculated accordingly;Residual function between theoretical arrival time and measured arrival time is established, and Jacobian matrix of arrival time variation is constructed;Damage source coordinates and occurrence time are solved.The present application establishes the parameterization model of aqueduct cross section, uses the shortest path idea of curved surface to replace traditional ray tracing, and combines numerical difference and fast iteration method, to realize efficient and robust damage source positioning.

The present application relates to the technical field of material testing and engineering durability evaluation, and particularly relates to a method for predicting the service life of a aqueduct concrete. The method comprises the following steps: obtaining the mixing ratio, aggregate and environmental parameters, generating unified configuration parameters through test preparation, parameter solidification and terminology management; performing multi-field coupling loading and full-process recording to generate a time slice index table with spatial mapping relationship; performing synchronous measurement, extracting the correlation characteristics of micro-pore evolution and macro-permeability decay, and constructing a permeability and pore characteristic parameter set; finally, through model training and feature mapping and weight adjustment processing from the laboratory to the field, the laboratory model is migrated to the field scene and a durability evaluation report containing maintenance recommendations is generated. The present application solves the problems of disconnection between micro-pores and macro-performance, and large deviation between laboratory and field data, significantly improves the accuracy and engineering applicability of life prediction, and provides a reliable basis for aqueduct maintenance.

This application relates to a method for safety assessment of aqueducts based on BeiDou monitoring, comprising the following steps: acquiring three-dimensional displacement monitoring data of key structural nodes of the aqueduct through the BeiDou system; acquiring meteorological parameters, including temperature, humidity, wind speed, and hydrological data; acquiring blasting data of surrounding mountains and load data of large transport vehicles to form a disturbance vector; constructing an environmental disturbance model and calculating the net deformation based on the environmental disturbance model; constructing a deep learning prediction model based on the net deformation sequence and using a long short-term memory network to predict the future structural state; setting a risk assessment function and a risk assessment threshold, and determining the safety level of the aqueduct by comparing the risk assessment function with the preset threshold; this method for safety assessment of aqueducts based on BeiDou monitoring can integrate multi-source monitoring data, effectively eliminate environmental disturbances, and has long-term prediction capabilities.

This invention discloses a multi-layer sealing device for the expansion joint of a U-shaped concrete aqueduct, belonging to the field of water conveyance construction technology. It includes embedded steel plates installed on the joint surfaces of two aqueduct sections. The main body of the embedded steel plates has a labyrinth sealing structure, and embedded bolts are fixed to the main body of the steel plates. A composite rubber block is installed inside the joint of the two aqueduct sections, with mounting holes. The embedded bolts pass through the mounting holes and are connected to spherical nuts. The composite rubber block is pressed and fixed to the embedded steel plates by the spherical nuts. Water-absorbing and expanding rubber strips are respectively installed between the composite rubber block and the aqueduct, and between the composite rubber block and the labyrinth sealing structure of the embedded steel plates. This invention adopts a multi-layer sealing structure, providing reliable sealing, strong adaptability to deformation, and easy replacement and maintenance.

This invention belongs to the field of water conservancy engineering technology, specifically relating to an aqueduct structure and a reinforcement and maintenance construction method. The aqueduct structure includes a steel aqueduct formed by a support frame and steel pipes. The support frame includes two sets of support rods connected by several cross braces to form a bottom support. A column is welded above the support rods, and a top rod is welded to the top of the column, forming a side enclosure. The bottom support and the side enclosure together constitute the support frame. A receiving space is formed between the two sets of side enclosures, in which a steel pipe is installed, with both ends of the steel pipe extending out of the receiving space to form extensions. Support legs are welded to the bottom end of the bottom support. The reinforcement and maintenance construction method is based on the steel aqueduct and mainly includes welding, transportation and hoisting, and sealing connections. This invention is easy to manufacture, eliminates the need for a full-span support structure, minimizes traffic impact on existing lines, and provides excellent seepage prevention, meeting both deformation and seepage prevention requirements.

The invention relates to the technical field of hydraulic engineering structure safety monitoring, and discloses an aqueduct structure response analysis method based on prototype test and monitoring data. The method comprises the following steps: acquiring a displacement-strain-temperature triple from a space-channel-working condition index and monitoring data packet, and standardizing and cleaning the triple to form a baseline data set; in combination with prototype test analysis and boundary constraint identification, extracting a water level profile and a temperature field indicating quantity, and completing prior injection and parameter binding; constructing a water pressure and temperature component model, configuring residual gating and generating a contribution rate spectrogram, and obtaining a structure response component model; and carrying out position consistency rechecking and three-level criterion label binding in an operation period, and outputting a risk map, a working condition label and a disposal strategy list. According to the method, the cooperation of prior and monitoring is enhanced, and the component identification and diagnosis traceability is improved.