12 results about "Constructability" patented technology

This utility model belongs to the technical field of reinforced concrete composite shear wall building structures in civil engineering, specifically relating to a bidirectional hollow slab composite shear wall with opening-narrowing stirrups. By setting opening-narrowing stirrups corresponding to the horizontal holes of the bidirectional hollow slab at the edge members at both ends of the shear wall, and by setting longitudinal reinforcement distributed within the wall and longitudinal reinforcement of the edge members at the corresponding positions of the vertical holes of the bidirectional hollow slab and the opening-narrowing stirrups, the structure not only meets design requirements and facilitates construction, but also, due to the special structure of the opening-narrowing stirrups, the constraint area of ​​the opening-narrowing stirrups on the core concrete can be adjusted by the angle formed by the longitudinal and horizontal sections. This allows the constraint effect of the opening-narrowing stirrups on the core concrete to gradually decrease towards the opening end, forming a vertical energy dissipation zone under large horizontal lateral displacement. This effectively controls the structural failure mode and energy dissipation method, achieving a unity of constructability, good economy, and seismic performance in the new composite shear wall structure.

The invention belongs to the technical field of 3D printing concrete materials, and particularly relates to 3D printing waste glass recycled lightweight aggregate concrete and a preparation method thereof. The concrete is prepared from the following raw materials: cement, silica fume, fine aggregate, waste glass recycled lightweight aggregate, a viscosity modifier, nano silicon dioxide, nano cellulose fibers, a water reducing agent, fly ash, a defoaming agent and water. The lightweight 3D printing concrete with different densities is prepared by replacing sand with the lightweight aggregate prepared by recycling the waste glass, the tackifier, the thixotropic agent, the nano-crystalline cellulose fiber, the water reducer and the fly ash are used for competitive synergistic effect to improve the water-retaining property and the rheological property, a nano-micron multi-scale synergistic system is constructed, multi-stage particle accumulation is effectively realized, and the 3D printing concrete with different densities is prepared. The problems that the constructability is difficult to improve while the density of conventional 3D printing lightweight aggregate concrete is reduced and the lightweight aggregate of low-density 3D printing concrete floats upwards are solved, the printable window time is prolonged, and the interface performance of an aggregate matrix is enhanced.

This invention relates to a method and system for improving the constructability of inclined 3D printed concrete based on finite element simulation. The method includes: modeling the inclined 3D printed structure, performing strip division, segment division, and mesh division to obtain the target model, constructing a set of elements and nodes for each segment, and setting the model parameters of the target model; activating the element set, nozzle constraints, and extrusion pressure of the corresponding segment segment by segment, assigning age variables to the activated nodes, and applying gravity to the activated parts; performing finite element calculations on the segment-by-segment activation process until the structure is significantly damaged, obtaining the maximum printable height and corresponding deformation before damage; adjusting the process parameters, remodeling if the initial inclined 3D printed geometry changes, otherwise resetting the process parameters until the maximum printable height is maximized and the corresponding deformation is minimized. Compared with the prior art, this invention improves the current situation where existing models have insufficient fidelity in reproducing the inclined 3D printed concrete process and low prediction accuracy.

A coping and a panel including same can be stably fixed without the need for a post process by a simple fastening method in which the coping is fitted and fastened from top to bottom when the coping is installed, and the risk of water leakage can be greatly reduced by forming a drain space into which water flows. According to the present invention, the coping is configured in a dry type, so that environmental pollution can be reduced and constructability can be improved without a post-process. The present invention employs a dry construction method which enables adaptive construction by mechanical assembling such as bolt tightening without using an adhesive which requires waiting for curing, and thus requires lower difficulty of construction than wet construction, requires short construction period, and enables construction regardless of season, thereby achieving a high construction efficiency.

The application relates to the technical field of computer-aided design. A power engineering design scheme optimization method is disclosed, which comprises the following steps: receiving a power engineering design scheme, establishing an engineering structure three-dimensional model according to component geometric parameters, spatial positions and connection relationships; constructing a construction deviation model corresponding to an engineering construction process, introducing the construction deviation model into the engineering structure three-dimensional model to simulate the construction process, and obtaining state change information of each structure node in the construction process; identifying the propagation of the construction deviation in the engineering structure and the construction risk caused by the construction deviation according to the state change information; generating a candidate design adjustment scheme based on the construction deviation propagation and the construction risk, and obtaining an optimized design scheme through simulation screening and outputting corresponding modification prompts. The application can identify the construction deviation propagation and risk evolution in the design stage, and automatically generate an optimized design scheme, so as to improve the constructability and safety of the power engineering design scheme.

To provide a column-slab joint structure that enables simplification of the structure and improvement of constructability. [Solution] The column slab joint structure according to the present invention comprises a reinforced concrete slab and upper floor columns and lower floor columns separated by the reinforced concrete slab, wherein the reinforced concrete slab is joined to the upper floor columns and lower floor columns by a joint member made of precast reinforced concrete, at least one of the upper floor columns and lower floor columns has a recess on its end face, and the joint member has a protrusion that fits into the recess.

The present application relates to the technical field of 3D printing, and discloses a 3D printing large-scale building practical slicing and path planning method, which comprises the following steps: globally planning a path for avoiding obstacles in the horizontal and vertical directions of a building model, and dividing a printing area; slicing the printing area; determining a local printing path for a specific wall position, and making a printing path for a force-bearing wall, which is to first walk along the outer contour of the wall and then walk along the inclined web member of the internal truss of the wall; for a non-force-bearing wall, first walk along the outer contour and then walk along the Z shape; the end point of the lower layer is the start point of the upper layer; and analyzing whether the interval time between layers exceeds the initial setting time of the concrete. The present application makes the working radius of the 3D printer free of obstacles and covers the force-bearing wall, and the number of printer movements is minimized; the wall is continuously printed, the concrete printing is ensured not to be interrupted, and the empty walking rate is reduced; the printing head can avoid sharp turns, the amount of printing material is small; and the constructability before the initial setting of the concrete, the printing appearance quality, the eccentric compression strength after the final setting, the stiffness and the stability are satisfied.

The present invention relates to prefabricated shear reinforcement that is built in the interior of a slab around a column, more specifically to prefabricated shear reinforcement that is capable of having a plurality of bottom and top main bars whose one end extending into a column and a spiral stirrup bent continuously to form a plurality of rectangular shapes surrounding the bottom and top main bars, thereby having excellent fabrication, constructability, and space utilization, providing economical advantages, minimizing labors needed on a construction site, and reducing a period of construction.

The application discloses a novel multi-time scale scheduling method of a power system, and relates to the technical field of power system scheduling control, and comprises the following steps: S1, constructing a space-time state atlas; S2, using the state atlas to perform regional constructability mapping analysis; S3, using a network construction capability matrix to construct a resource allocation time sequence structure under a multi-time scale; S4, using the network construction capability matrix and a resource regulation atlas to perform regulation link constraint integration; S5, using a regulation capability structure to perform scheduling hierarchical regulation structure fusion; and S6, using response mapping to generate a scheduling output of constraint fusion. Through the setting of a regional response behavior evaluation mechanism based on a residual mapping and a response reconstruction model, response trajectory deviation information of regional resources under a multi-time scale can be dynamically extracted, and a residual dominant partition dynamic adjustment basis is established, so that resource scheduling of different regions under a future time scale is optimized and adjusted according to response trend evolution.

The application relates to a magnetic field controlled 3D printing concrete constructability improving device and method, wherein the 3D printing device comprises a printing unit, a magnetic field unit and a control unit; the printing unit comprises a printing platform and a printing device body arranged above the printing platform; the magnetic field unit is used for applying a magnetic force to concrete on the printing platform; and the control unit comprises a printing control element connected with the printing unit and used for controlling the printing device body to extrude the concrete, and a magnetic field control element connected with the magnetic field unit; during printing, the control unit controls the magnetic force size according to the printing height and the concrete hardening state, so that the concrete does not deform. Compared with the prior art, the application can solve the problem that 3D printing concrete is prone to overturning and collapse, the method can obtain higher concrete constructable layers and a stable printing construction process, the 3D printing concrete constructability is improved, the printing operation is convenient, the concrete performance is excellent, and an automatic additive manufacturing process is realized.

The invention discloses a maintainability safety check analysis method and system for oil and gas field project assets, and the method comprises the steps: compiling a maintainability project asset classification table according to a project construction flow chart and a project asset list, and generating a check card of each type of maintainability project assets according to the maintainability project asset classification table, and performing maintainability safety inspection on each device in the project construction three-dimensional model based on the inspection card, analyzing and outputting an inspection report, and making a rectification list based on the inspection report and tracking. Daily operation, maintenance inspection and analysis are carried out on project assets in the project construction stage from the angles of owner operation and maintenance, project constructability, operability and maintainability are unified, oil and gas field projects are more efficient and have more economic benefits in the whole life cycle, and a large amount of construction investment and operation and maintenance cost can be saved for owners.

The present application relates to the oil and gas drilling engineering technical field, specifically relates to a kind of directional drilling track optimization method based on GRU-MPC fusion model, constructs the time series prediction model of drill bit track state in the process of while drilling, introduce the rolling prediction of track state in the well to be drilled well length by gate cycle unit network, and the prediction result is as state prediction model in model predictive control.On this basis, in combination with engineering constructability constraint, construct the multi-objective evaluation function of fusing track deviation, trajectory smoothness, drilling efficiency and control stability, and realize the adaptive decision of track optimization under different working conditions by dynamic weight adjustment mechanism.System carries out prediction evaluation to candidate control sequence in each control cycle, only executes the optimal control decision of current cycle, and repeats the above-mentioned prediction and optimization process after obtaining new while drilling data, to realize the rolling multi-objective optimization of directional drilling track control.