105 results about "Aqueduct" patented technology

The invention provides a large aqueduct intelligent temperature control system and method based on a digital twinning technology, and relates to the technical field of aqueduct temperature monitoring. A three-dimensional digital model of an aqueduct is constructed, and geometric parameters of the three-dimensional digital model are corrected through three-dimensional point cloud data of the aqueduct, so that the temperature of the aqueduct can be accurately controlled. Thermodynamic simulation calculation is carried out based on the three-dimensional digital model to obtain a simulation result, the aqueduct concrete temperature field simulation result is compared with the collected aqueduct temperature to obtain temperature deviation, parameters of thermodynamic simulation calculation are corrected according to the temperature deviation, and therefore the simulation result is updated, and the accuracy of the simulation result is improved. According to simulation results obtained after geometric parameters of the three-dimensional digital model and parameters obtained after thermodynamic simulation calculation are corrected, the water flow of the corresponding water pipe is controlled for cooling, local targeted cooling is achieved, and the problem that targeted cooling cannot be achieved for too high local hydration heat in the prior art is solved; the method is suitable for intelligent temperature control in the hydration heat process of the large aqueduct.

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 invention discloses a U-shaped aqueduct prestress multi-beam cooperative tensioning control method and system. The method comprises the steps that S1, a quantitative derivation model is constructed, based on an aqueduct structural mechanical equilibrium equation, a prestress coupling effect item is introduced for calculation, a prestress coupling matrix is output, and an initial tensioning sequence is derived; the device is simple in structure, and an initial tensioning sequence is deduced by establishing a mechanical equilibrium equation and introducing a coupling effect item; meanwhile, stress / displacement deviation data collected by a monitoring system in real time are fed back to an edge calculation terminal to calculate a control strategy in real time, adjustment is executed by a tensioning device, and therefore a field data closed-loop optimization mechanism is constructed, the tensioning force and sequence can be dynamically corrected, the limitation of a static model is broken through, and the construction efficiency is improved. And a displacement constraint term is introduced as a punishment or control condition in the optimization process, so that deformation overrun of key parts of the structure is effectively prevented, and the precision, safety and intelligent level of prestress construction are remarkably improved.

The invention relates to the field of hydraulic structures, in particular to a three-dimensional damage rapid positioning method for a complex aqueduct structure. Acoustic emission or microseismic signals in the aqueduct structure are collected, and the first arrival time of the signals is picked up through an STA / LTA long and short time window energy ratio method; constructing a curved surface structure model composed of a groove surface and a side wall; parameterizing the cross section, and constructing a groove surface propagation path set according to the position relationship between the damage point and the sensor in a parameter space; for each pair of damage points and sensors, selecting a path with the minimum groove surface path length as a shortest propagation path, and calculating theoretical arrival time according to the shortest propagation path; establishing a residual function between the theoretical arrival time and the actually measured arrival time, and constructing a jacobian matrix of arrival time change; and solving the coordinates and occurrence time of the damage source. According to the method, the parameterized model of the aqueduct section is established, traditional ray tracing is replaced with the curved surface shortest path thought, and the numerical difference and rapid iteration methods are combined, so that efficient and robust damage source positioning is achieved.

The invention discloses an automatic monitoring method for a water delivery aqueduct expansion joint, an automatic monitoring device for the water delivery aqueduct expansion joint, automatic monitoring equipment and a computer readable storage medium. According to the method, continuous collection of expansion joint deformation is achieved through a distributed sensor, and interference caused by thermal expansion and cold contraction is eliminated in combination with a temperature compensation algorithm; and graded early warning is executed according to the deformation rate and the gap width deviation, so that the real-time performance and reliability of health monitoring of the aqueduct structure are effectively improved.

The invention relates to the technical field of water conservancy projects, in particular to a design method of a continuous rigid frame aqueduct. Comprising the following steps that the building position of the continuous rigid frame aqueduct is determined, and the aqueduct span arrangement of the continuous rigid frame aqueduct is drawn up according to the building position; hole span arrangement, side span and main span are determined according to a preset side-mid span ratio range of the continuous rigid frame aqueduct; the root beam height and the closure section beam height are determined according to the main span and the preset height-span ratio range of the continuous rigid frame aqueduct; the thickness range of a plate, the length of a pier top cast-in-place section, the length of a closure section and a groove body bottom curvilinear equation are determined, and a suspended casting section is segmented; the center distance of the double-limb thin-wall pier and the center distance of double limbs are determined; arranging prestressed steel beams for the continuous rigid frame aqueduct in the longitudinal direction and the transverse direction respectively; and constructing a finite element model and carrying out finite element analysis. According to the design theory and method of the continuous rigid frame aqueduct, rapid design of the continuous rigid frame aqueduct can be achieved, and a basis can be provided for standard compilation.

The utility model relates to an integral rapidly-assembled aqueduct bent frame column construction operation platform which comprises a vertical rod support. Three layers of operation bedplates are arranged in the height direction of the vertical rod bracket at equal intervals; the guardrails are installed on the periphery of the vertical rod support and located between the adjacent working platens. The one-truss operation module is composed of the vertical rod support, the three layers of operation platens and the guardrails, the adjacent operation modules are connected through the hook-shaped plug pins, the operation modules can be modularly produced in batches, and when the operation modules are used, only the corresponding number of operation modules need to be selected according to the heights of the framed bent columns, and the operation modules can be conveniently assembled. The aqueduct bent frame column construction operation platform can be assembled by vertically stacking the multiple truss operation modules and inserting the hook-shaped plug pins, during disassembly, only the hook-shaped plug pins need to be pulled out and the operation modules need to be disassembled, compared with a traditional on-site building and scaffold disassembly mode, the operation modules of the construction operation platform can be repeatedly used, and the construction efficiency is improved. Assembly and disassembly are easy and fast, time and labor are saved, and the construction progress is effectively accelerated.

To provide a water leakage prevention structure and a water leakage prevention method of a water pipe bridge capable of suppressing malfunction due to breakage of an expansion cover.SOLUTION: In a water leakage prevention structure of a Suikan-kyo Bridge in which a water leakage prevention device 10 for preventing water leakage due to detachment of a pipe body 1 is attached to a pipe joint JT in which end portions of the pipe body 1 forming a pipeline of a bathroom 90 are connected to each other, the water leakage prevention device 10 includes a flexible pipe 14 as a metal expansion cover surrounding the pipe joint JT, and an external fitting member 11,12 joined to both end portions of the flexible pipe 14 in a pipe axis direction and externally fitted to the pipe body 1 in a watertight manner. water pipe bridge, the water leakage preventing device 10 is arranged in an area X sandwiched by a pair of supports 70 in the same abutment 91.SELECTED DRAWING: Figure 2

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.

The present application relates to the technical field of hydraulic engineering, in particular to a method for controlling displacement of a double-curvature large-span historical relic aqueduct arch ring with reconstructed middle pier and reinforced, comprising a main arch ring: a side wall of the main arch ring is fixed with reinforcing steel bars by bolts, and the reinforcing steel bars are fixed with stainless steel plates at the bottom, and the stainless steel plates are arranged on the top of the fixed elevation position; the stainless steel plates are fixed to the side wall of the main arch ring by the reinforcing steel bars, and the distance between the stainless steel plates and the fixed elevation position is less than 10 cm; the reinforcing steel bars are fixed with thermometers on the side wall. In the process of local reconstruction and reinforcement construction, the displacement of the arch ring can be detected multiple times to realize real-time displacement monitoring, which is convenient for precise control of the displacement distance, avoids detection errors during the process of only removing and reconstructing the middle pier, and causes the arch ring to settle and displace, thereby causing the reinforcement to fail, and the process of reinforcing the arch ring is finely detected to control the displacement, which is convenient for controlling the displacement safety of the arch ring. The present application improves the construction efficiency and controls the displacement accurately.

The utility model provides an assembly type arch aqueduct supporting frame which comprises an arch rib, buttresses are installed at the bottom of the arch rib, a plurality of framed bent columns are arranged at the top of the arch rib, the tops of the framed bent columns are connected with an aqueduct body through an installation mechanism, and the installation mechanism comprises a connecting base and a slope installation column. A limiting groove is formed in the side edge of the inclined surface mounting column, the connecting seat is mounted at the top of the framed bent column, a mounting seat is mounted at the top of the connecting seat, a clamping assembly matched with the limiting groove is arranged in the mounting seat, and a pedal assembly matched with the clamping assembly is arranged on the outer surface of the mounting seat. Compared with the prior art, the aqueduct has the advantages that the aqueduct structure is formed by splicing the plurality of aqueduct bodies in a modularized mode, so that when a certain section of aqueduct body of the aqueduct is damaged, the aqueduct body at the damaged position can be replaced, and the maintenance cost of the aqueduct body is reduced.

The invention belongs to the field of anti-explosion safety of hydraulic structures, and provides a method for evaluating the overall stability of an aqueduct structure under the action of an internal underwater contact explosion load, and the method comprises the steps: building a fine full-coupling analysis model of a large aqueduct under the internal underwater contact explosion; an initial load is applied, the aqueduct structure generates an initial response, and after the structural response is stable, the explosive is ignited; initial damage of the aqueduct structure under the action of the explosive shock waves is calculated, and a failure unit is deleted through a failure unit erosion technology; reconstructing a post-explosion residual structure model of the aqueduct; carrying out nonlinear static analysis on the overall stability of the aqueduct after internal contact explosion; comparing and verifying the structure response result with the simulation result of the existing analysis method; evaluating the damage grade and the overall stability of the aqueduct structure under the action of the blast load by taking the residual bearing capacity of the structure as a judgment basis; and according to a damage grade judgment result, carrying out safety assessment on the overall stability of the aqueduct after explosion. According to the invention, rapid assessment of the damage degree of the aqueduct structure under different internal contact explosion conditions is realized.

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 utility model discloses a dust raising prevention spraying device for aqueduct dismantling, and relates to the technical field of dust raising prevention. The device comprises a bottom plate, wherein a height adjusting mechanism and an angle adjusting mechanism are arranged on the bottom plate; the height adjusting mechanism comprises two sliding rods arranged above the bottom plate, a rack is fixedly connected to the outer wall of the sliding rod located on the rear side, an adjusting box is slidably connected to the outer walls of the two sliding rods, a first rotating shaft is rotatably connected to the inner wall of the adjusting box, and a worm wheel is fixedly connected to the outer wall of the first rotating shaft. The height adjusting mechanism is arranged, so that the problems that when an existing dust-raising-preventing spraying device for aqueduct dismantling is used, the height of the spraying head is inconvenient to adjust, when a high aqueduct is dismantled through the spraying head with the fixed height, the spraying range is difficult to cover the top of the aqueduct, and dust raising is generated when an upper structure is dismantled are solved; and when a lower aqueduct is dismounted, the spraying range is too large, and water resources are wasted.

The utility model relates to the technical field of hydraulic engineering, and discloses an aqueduct body inner membrane compression bar system which comprises I-shaped steel, the bottom end of the I-shaped steel is connected with a supporting rod, the I-shaped steel is provided with a finish rolling nut, and the bottom end of the supporting rod is fixedly provided with a connecting rod. The I-shaped steel, the connecting rods and the spiral supporting rod structures are arranged, the pressing rod system is assembled outside a site, the pressing rod system is hoisted to a construction face at a time after all the assembling is completed, the I-shaped steel and concrete are fixed through the deformed steel bars and the finish rolling nuts, and the connecting rods are fixed to the concrete through the transverse connecting pieces. The three spiral supporting rod structures play a role in supporting a steel formwork on the inner side of a U-shaped aqueduct body, the distance between the pressing rod systems in the longitudinal direction is 1.5 m, the pressing rod systems and a steel formwork on the outer side of the aqueduct body are connected into a whole, the formworks can be integrally spliced off site, the formworks can be integrally hoisted to a working face after being spliced, and the formworks can also be integrally dismantled at a time when being dismantled.

The application relates to the field of aqueduct construction, and particularly discloses a seamless bent column construction process and structure, which comprises the following steps: S1, pouring a cast-in-place pile; S2, building a bearing table; S3, building a column steel reinforcement cage; S4, installing a column formwork and a tie beam formwork; S5, pouring a column and a tie beam; S6, repeating the steps S4 and S5; S7, pouring a cap beam; and S8, disassembling the formwork. The application has the effects of improving the pouring efficiency and quality of the bent column.

The utility model relates to the technical field of aqueduct construction, in particular to a waterstop mounting formwork structure for the end of an aqueduct section. Comprising a water stop groove template of a square tubular structure, and a first through hole and a second through hole are correspondingly formed in the two opposite side walls of the water stop groove template; and the embedded rod sequentially penetrates through the first penetrating hole and the second penetrating hole, a locking assembly is arranged on the embedded rod, and the locking assembly is used for installing the water stop groove formwork and the embedded rod on the aqueduct formwork. The water stop belt mounting template structure can be used for forming a water stop groove and a pre-embedded mounting piece at the end of an aqueduct section at one time, the water stop groove template and the pre-embedded rod are fixed to the aqueduct template through the locking assembly, positioning and fixing of the water stop groove template and the pre-embedded rod can be conveniently achieved, the pre-embedded rod is anchored along with aqueduct concrete pouring, and the water stop groove template and the pre-embedded rod are fixed to the aqueduct template through the locking assembly. The connecting structure has the advantages of high connecting strength and good sealing performance.

The invention discloses a BIM (Building Information Modeling)-based parametric modeling and mapping method for a simply-supported U-shaped aqueduct structure in the technical field of three-dimensional modeling of water conservancy projects, which mainly comprises the following steps of: on the basis of a traditional BIM modeling technology, parameterizing basic physical units such as points, lines, surfaces and bodies of the aqueduct structure; the method comprises the following steps: establishing a parameterized construction model, a pre-stressed steel beam model and a reinforcing steel bar model, checking structural arrangement, steel beam arrangement and reinforcing steel bar arrangement from a three-dimensional angle, checking a relative position relationship among the three parts, then establishing a section cutting plane to form a section map, arranging the drawing according to a specified sequence by utilizing functions of front view, side view, sectioning and the like, and constructing a pre-stressed steel beam model and a reinforcing steel bar model. And a technical rule with an automatic mapping function is formed. When aqueduct structures of the same type and different sizes are modeled subsequently, modeling and drawing of the aqueduct can be completed only by modifying corresponding parameters, design work is greatly facilitated, the method can be matched with a construction side to simplify the design difficulty of construction measures, and therefore forward design of the aqueduct is achieved.

The utility model aims to provide an anti-splashing device for an underflow port of a swirler and the swirler, and belongs to the technical field of drilling mud separation equipment. The device comprises an aqueduct, a cyclone insertion hole is formed in the top of a shell on the front side of the aqueduct with the direction of a discharge port of a screen box as the front, a cyclone underflow opening penetrates through the insertion hole and extends into the aqueduct, and the outer wall of the cyclone is in sealed connection with the insertion hole through a sealing piece. The bottom flow opening of the cyclone extends into the aqueduct, the cyclone is connected with the aqueduct in a sealed mode, the bottom flow opening of the cyclone is completely sealed in the aqueduct, the technical problem that the bottom flow opening of an existing cyclone splashes around is solved, the structure is simple, and cost is low.

The application discloses a prefabricated aqueduct intensive construction production device, which comprises two longitudinal moving tracks arranged along the front-back direction, a plurality of pouring pedestals evenly arranged between the two longitudinal moving tracks, support foundations arranged at the front and back ends of each pouring pedestal, and two transverse moving tracks arranged at the left side and the back side of the pouring pedestal; an outer mold assembly is arranged on the most front pouring pedestal; a lifting support is arranged on the support foundation, an inner mold assembly is arranged in the outer mold assembly, the two ends of the inner mold assembly are supported on the lifting supports at the front and back ends of the pouring pedestal, and end molds are arranged at the front and back ends of the outer mold assembly.

The application provides a continuous rigid frame aqueduct midspan pre-camber calculation method, system, equipment and medium, and relates to the technical field of hydraulic engineering, and the method comprises the steps of: dividing the continuous rigid frame aqueduct into a plurality of cantilever beam segments, and constructing a finite element mechanics model of the continuous rigid frame aqueduct based on the cantilever beam segments; theoretically predicting the stress and deflection of each construction stage of the continuous rigid frame aqueduct according to the model, to obtain corresponding stress theoretical values and deflection theoretical values; and establishing a comprehensive objective function according to the stress theoretical values, the deflection theoretical values, and stress actual values and deflection actual values; iteratively inverting the comprehensive objective function to obtain key parameters; and then determining the pre-camber values of each calculation node in the finite element mechanics model. The application establishes a finite element mechanics model, introduces the measured stress and deflection data in the construction process, constructs a comprehensive objective function for iterative inversion, dynamically corrects the key parameters of the model, and thus effectively improves the pre-camber calculation accuracy.

The application discloses an aqueduct cast-in-place support structure, which comprises a bent cap cast on the top of a pier column and a beam support arranged between the bent caps of two adjacent pier columns. The bent cap is provided with a pair of hanging pieces on the left and right sides respectively. Each pair of hanging pieces is arranged on the front and back sides of the bent cap and is fixedly connected through a fixing mechanism. The left and right sides of the hanging piece are respectively provided with a support seat and a mounting seat for mounting a lowering mechanism. The two ends of the beam support are detachably connected to the lower ends of the corresponding hanging pieces. The top of the beam support is provided with a formwork system, and the aqueduct is cast on the formwork system. The two ends of the aqueduct are supported on the bent caps of the two adjacent pier columns and are supported on the support seats of the corresponding hanging pieces. The support seat is supported on the bent cap. The application further discloses a method for dismounting the beam support of the aqueduct cast-in-place support structure. The aqueduct cast-in-place support structure and the method for dismounting the beam support thereof can reduce the loosening of the hanging pieces during the dismounting of the beam support and improve the overall stability.

The invention discloses a construction method of a suspended bailey beam aqueduct body formwork. The construction method comprises the following steps that firstly, construction preparation is conducted; secondly, a bearing beam is installed; thirdly, a lifting sand box is installed and filled; fourthly, a bailey beam support is erected; fifthly, the bailey beam support is pre-pressed; sixthly, aqueduct formworks are installed; seventhly, concrete is poured in a layered mode; eighthly, the inner formwork is dismantled and maintained; ninthly, the movable groove-crossing reversely-hung working platform is in place; tenthly, the pressure of the lifting sand box on one side of the aqueduct is relieved, the outer formwork is removed, and the bailey beam support is removed; eleventhly, the lifting sand box on the other side of the aqueduct is subjected to pressure relief, an outer formwork is removed, and a bailey beam support is removed; 12, the bottom formwork and the bailey beam support at the bottom are reserved and maintained; and 13, pressure relief of the lifting sand box at the bottom of the aqueduct, dismantling of the bottom formwork and dismantling of the bailey beam support are conducted, the foundation reinforcement problem can be avoided, efficiency can be improved, cost can be reduced, and the construction period can be shortened.

The invention relates to the technical field of water conservancy project aqueduct design, in particular to a simplified determination method and terminal for an upper structure of a single-compartment simply supported beam aqueduct in an irrigation area, and the method comprises the following steps: dividing a structure parameter area of the upper structure of the aqueduct into a main variable and a secondary variable; determining the value of the secondary variable according to an empirical value or a reference case; determining an optimal main variable by adopting a layered quantitative comparison method; determining template design parameters of the aqueduct superstructure by combining the values of the optimal main variable and the secondary variable; through variable layering, step-by-step optimization and normalization processing, the technical defects that in the prior art, trial calculation depends on experience, the calculation amount is large, and the influence of transverse stress is neglected are overcome, the multi-target optimization process is simplified and quantified, the structural safety and economic rationality of the design result are improved, and the design method is suitable for large-scale popularization and application. And the template parameters meeting the batch construction requirements can be efficiently output.

The invention relates to the technical field of water conservancy projects, and discloses an emergency drainage structure and a design, layout and use method thereof. The emergency drainage structure comprises an aqueduct, a drainage channel and a control module; the aqueduct is provided with a water drainage opening used for emergency water drainage. The drainage channel is arranged on a drainage opening of the aqueduct and used for controlling opening and closing of the drainage opening, and the drainage channel comprises blocking layers connected through explosive bolts. The control module is arranged on the aqueduct and used for controlling detonation of the explosive bolts. The design method and the layout method are used for the emergency drainage structure. The using method is based on the emergency drainage structure. Therefore, top-speed response and accurate control are achieved, that is, the action time of the explosive bolt is at the millisecond level, the whole water drainage process is completed within several seconds, and an earthquake early warning window is perfectly matched. Layered design of the water drainage channel is achieved through a plurality of blocking layers, water drainage according to needs can be achieved instead of complete emptying, water resources are guaranteed to the maximum degree, and impact is reduced.

The invention relates to civil and hydraulic engineering construction, and discloses a large-span arch aqueduct main arch ring closed-loop regulation and control cast-in-place device and method. The device comprises a steel truss arch frame, a ring-dividing and section-dividing pouring control device, a monitoring regulation and control system, a buckle cable stabilizing system and an execution assembly. The arch ring is divided into an upper ring and a lower ring, each ring is divided into seven sections, namely symmetrical section groups I, II and III and an arch crown closure section IV, and isolation positioning assemblies are arranged for grout stopping and positioning. And the monitoring regulation and control system collects deflection, strain / stress and temperature and performs threshold judgment, rigidity reinforcement, cable force adjustment and / or temperature control maintenance are / is performed when the threshold is exceeded, and the operation is continued after the standard is reached through remeasurement. According to the method, the rings are put down and then put up, the rings I-III-II-IV are symmetrically poured, load-rigidity matching and linear-stress control are achieved, and the method is suitable for cast-in-place of the main arch ring of the arch aqueduct with the span larger than or equal to 100 m.

The invention discloses a continuous rigid frame aqueduct prestress tension control method. The method comprises the steps that S1, a digital twinborn model is established; s2, collecting strain, temperature and environment humidity data of the concrete in real time; s3, based on a digital twinborn model, determining an initial tensioning sequence of four-way prestress and a control target value of each stage of tensioning; s4, tensioning operation is executed through tensioning equipment, and in the tensioning process, the tensioning force, the steel beam elongation and the actual concrete stress value obtained through reconstruction of the collecting system are obtained in real time; s5, performing real-time comparison and evaluation on the tension, the elongation of the steel bundle and the actual stress value of the concrete obtained in real time and corresponding predicted values in the digital twinborn model; and S6, based on comparison and evaluation results in S5, performing optimization calculation through a digital twinborn model, dynamically generating a tensioning adjustment instruction, and feeding back the tensioning adjustment instruction to the tensioning equipment. And the accuracy, the reliability and the overall construction efficiency of the aqueduct tensioning process are improved.

The utility model provides a water guide pipe fixing clip and a water guide pipe connecting structure, and belongs to the technical field of pipeline connection. The water guide pipe fixing clip comprises a mounting main body and two limiting structures; the two ends of the mounting main body are bent downwards to define a containing cavity with two through ends and one open side; the containing cavity is used for enabling the water guide pipe to stretch into the containing cavity from the open side of the containing cavity, the water guide pipe extends in the first direction, and a shock isolation gap is reserved between the inner cavity wall of the containing cavity and the upper side wall of the water guide pipe; the two limiting structures are correspondingly arranged at the two ends of the mounting main body; the limiting structure is of a structure protruding from the end of the installation body to the interior of the containing cavity. The two bent sides of the mounting main body are elastic, and the lower parts of the mounting main body obliquely extend towards the inner side of the accommodating cavity so as to clamp the outer side wall of the water guide pipe; the limiting structure is limited at the bottom of the water guide pipe; the water guide pipe connecting structure comprises a fixing clip. According to the water guide pipe fixing clip and the water guide pipe connecting structure, the installation efficiency can be improved, and condensate water is prevented from leaking.