7381 results about "Structure support" patented technology

The invention discloses an intelligent monitoring system for deformation and stress of a deep foundation pit supporting structure, relates to the technical field of deep foundation pit supporting monitoring, and is used for solving the problem of poor early warning of the deformation risk of the supporting structure. According to the method, high-density acquisition of inclination angle, deformation and stress data of a key area of a deep foundation pit supporting structure is realized by constructing a sensitivity-driven measuring point layout mechanism; the method comprises the following steps: constructing an inversion model based on stress and strain rates, obtaining a structural equivalent modulus, extracting a change rate of the structural equivalent modulus, judging a rigidity evolution trend, further constructing a modulus change rate space field, setting a region threshold by combining a disturbance sensitivity factor, realizing abnormal region identification and spatial positioning, and extracting structural response behavior information on the basis. And driving a system to trigger a grading response strategy according to an analysis result of the structure response behavior information, thereby realizing intelligent early warning of local deformation and stress instability of the deep foundation pit supporting structure.

A support includes a base and a support structure secured to the base. The support structure is adapted to support a plurality of horizontally extending elongated items. A retainer may be positioned over the elongated items to thereby prevent removal of the elongated items from the support structure. The retainer may be movable to an open position to permit removal of the elongated items.

The invention relates to the technical field of bridge construction, in particular to a swivel bridge ectopic support cast-in-place construction method which comprises the following steps: S1, constructing a three-dimensional model of a bridge and a support by using a BIM technology, performing virtual simulation, obtaining a simulation result by simulating a construction process, and outputting a construction scheme; s2, monitoring the support structure and the overall state of the bridge in real time on the swivel bridge construction site through monitoring equipment, and collecting real-time data of the construction site; when the system is used, equipment idling is reduced, personnel are reasonably distributed, material transportation is optimized, the construction efficiency is improved, intelligent optimization of data driving is achieved through BIM + AI, the construction automation level is improved, accurate analysis of supports and construction data is facilitated, the problem finding efficiency is improved, construction personnel can conveniently and rapidly intervene, construction delay is reduced, and the construction efficiency is improved. Potential risks can be predicted before faults occur, potential safety hazards are reduced, the construction sequence is adjusted through intelligent analysis, and delay caused by abnormal data is reduced.

The invention belongs to the technical field of supporting structure performance evaluation, and particularly discloses and provides an NT-CEP pile wall anchor foundation pit supporting structure anti-overturning evaluation method which comprises the steps that in the whole construction period, the construction process is divided into a plurality of continuous load steps based on excavation and supporting procedures; under each load step, pile body strain, arc-shaped wall stress, anchor rod axial force and deep soil displacement are synchronously collected, and a multi-source response data set is constructed; constructing an NT-CEP pile-arc wall-anchor rod coupling model based on the design drawing; carrying out inversion analysis through the model, and solving the load sharing proportion and the overall anti-overturning safety coefficient of each component under each load step; and continuously identifying the abnormal component based on the load sharing proportion, and dynamically analyzing and outputting an anti-overturning capability evaluation index based on the change trend of the safety coefficient. According to the method, dynamic refined evaluation of the construction process is realized, and the authenticity and perspectiveness of an evaluation result are remarkably improved.

The invention provides a deep-buried soft rock tunnel supporting structure design method based on energy regulation and control, and belongs to the technical field of tunnel engineering. Comprising the following steps: obtaining components of crustal stress in a large principal stress direction, a middle principal stress direction and a small principal stress direction; manufacturing a rock cylinder test piece and a cube test piece; carrying out a conventional uniaxial compression test on the cylindrical test piece to obtain basic strength parameters of the surrounding rock; carrying out a true triaxial loading and unloading test on the cubic test piece to obtain the ultimate dissipated energy of the surrounding rock; drawing up a tunnel anchor rod supporting structure design scheme; establishing a deep-buried soft rock tunnel calculation model considering the synergistic effect of the surrounding rock and the anchor rod, and calculating the dissipated energy density of the surrounding rock and the absorbed energy of the supporting structure; the instability energy judgment basis of the surrounding rock and the instability energy judgment basis of the anchor rod are calculated; and judging the stability of the surrounding rock and the stability of the anchor rod. The method is suitable for the tunnel in a deep high-energy geological environment, and can reflect the energy driving essence of the instability failure of the high-ground-stress deeply-buried soft rock tunnel.

Various embodiments of a modular support bracket system including a universal anchor element configured couple with a pair of support structures are described. The anchor element includes a connecting member that extends between first and second coupling members. Each of the first and second coupling members include an opening configured to provide first and second anchor points that an installer can couple a safety line to during the installation, maintenance, or repair. The support structure includes a first truss attachment segment having a base and a support member extending in a substantially perpendicular direction from one end of the base. The first truss attachment segment configured to be secured to the anchor element and a first surface of a first frame member of the roof. A ridge cap can be installed over the bracket system such that the first and second coupling members extend outward from the ridge cap.

The invention relates to an automatic measurement method and system for deformation of a large-area foundation pit supporting structure. The method comprises the following steps: performing synchronous data acquisition processing on multiple types of monitoring point groups arranged according to the large-area foundation pit supporting and protecting structure to obtain an initial measurement data set for representing the deformation state of the supporting and protecting structure; based on a time sequence division mode taking a construction working condition change node as an index, performing staged grouping processing on the initial measurement data set to obtain a dynamic measurement curve set for the deformation evolution process of the supporting and protecting structure in different construction stages; and according to the dynamic measurement curve set, performing pattern recognition processing on the deformation behavior of the supporting and protecting structure in the whole construction period to obtain a multi-dimensional deformation feature set for describing the overall deformation feature and the local deformation feature of the supporting and protecting structure. By the adoption of the method, accurate recognition and reliable analysis of the deformation rule and the abnormal deformation phenomenon of the large-area foundation pit supporting structure can be improved.

The invention discloses a stress detection method and system applied to a high-pier bridge supporting structure, and relates to the technical field of bridge supporting structure stress detection. According to the stress detection method applied to the high-pier bridge supporting structure, for each bridge supporting column in the high-pier bridge supporting structure, supporting state data is obtained, an initial stress index is analyzed and corrected, a stress comprehensive correction index of the high-pier bridge supporting structure is obtained, judgment and analysis are conducted on the stress comprehensive correction index and a preset stress evaluation interval, and therefore the stress detection accuracy of the high-pier bridge supporting structure is improved. According to the method, the real-time data of each supporting column are obtained and are dynamically corrected in combination with various environmental factors, and the initial stress index of the supporting column is corrected according to changes of local displacement, local strain and load after each time of monitoring, so that the real-time performance and accuracy of stress evaluation are ensured; the accurate correction mechanism can be used for analyzing different stress states of each support column and reflecting the dynamic change of the structure in time.

The invention relates to the technical field of foundation pit supporting, in particular to a point-shaped foundation pit supporting structure stability evaluation method and system, and the method comprises the steps: obtaining the engineering parameters, geological data and dynamic monitoring data of a target foundation pit; performing feature extraction on the dynamic monitoring data to obtain a stability evaluation index vector; calculating spatial effect characteristic parameters of the target foundation pit based on the engineering parameters; the influence of geological data on the spatial effect is considered, the spatial effect characteristic parameters are corrected, mapping is carried out in a preset spatial effect weight database, and an evaluation index weight vector of the target foundation pit is obtained; performing weighted calculation on the stability evaluation index vector and the evaluation index weight vector to obtain a stability evaluation index of the target foundation pit, and comparing the stability evaluation index with a preset stability threshold to obtain a stability evaluation result; according to the method, the change of the space effect of the foundation pit under different geological conditions can be reflected more accurately, so that the final stability evaluation index can reflect the actual stability of the foundation pit more accurately.

The invention provides an inner supporting device and a using method thereof, and relates to the technical field of inner supporting, the inner supporting device comprises three foot supports, four supporting rods and a locking rod; the three foot supports and one end of the lock rod are sequentially connected through the four supporting rods to form a closed structure in a surrounding mode. The rod end of each supporting rod is rotationally arranged on the corresponding foot support or the corresponding lock rod. When the two supporting rods connected with one section of the lock rod are collinear, the inner supporting device forms a triangular supporting structure with the three foot supports as supporting points, and the triangular supporting structure is used for being supported in a target structure. The locking rod is a telescopic rod, the other end of the locking rod is used for being supported on the target structure in a jacking mode so that the triangular supporting structure supported in the target structure can be kept stable, and dismounting operation on a reinforcing hoop of the column reinforcement cage is easy.

The invention discloses a digital manufacturing method and system for a bracket node in a steel structure column, and relates to the related field of digital manufacturing of building components, and the method comprises the steps: collecting three-dimensional point cloud data of a bracket node connection region in a target steel structure column; stress concentration analysis is conducted in the vertical direction and the horizontal direction, and a key welding point set and a bolt hole site set are marked; lightweight design parameters of the bracket supporting structure are introduced, load stability analysis is conducted, and first assembly parameters are configured; traversing M bracket nodes in the target steel structure column to obtain a first assembly parameter to an Mth assembly parameter, and configuring a digital manufacturing instruction sequence in combination with the three-dimensional point cloud data; and inputting the data into a numerical control machining center, and driving multi-axis linkage equipment to manufacture and manage the bracket node. The technical problems that existing bracket joint manufacturing is low in efficiency and insufficient in precision and stability are solved, and the technical effects that the manufacturing efficiency is improved, the manufacturing precision and stability are improved, and powerful support is provided for energy-saving building material production are achieved.

A carrying pallet is provided. The carrying pallet includes a frame, a support structure and multiple feet. The frame includes multiple first beam frames which are connected in sequence in an end to end manner. The support structure includes multiple second beam frames which are distributed side by side and at intervals. Each of the feet is installed between every two adjacent first beam frames. Each of the first beam frames and the second beam frames adopts any one of a first structure, a second structure, a third structure and a fourth structure.

The invention provides a reverse hanging bottom die structure for wharf cast-in-place pile cap construction and a mounting method of the reverse hanging bottom die structure, and belongs to the technical field of wharf construction. The reverse hanging bottom die structure comprises a steel pipe pile, a stand column support arranged on the steel pipe pile, a transverse steel carrying pole arranged on the stand column, a hanging rod system, a limiting system, a supporting main beam structure and a die frame used for pile cap pouring. The supporting performance of the steel pipe cast-in-place pile is fully utilized, the structural steel structure is used for building the reverse hanging bottom die supporting structure for the cast-in-place pile cap, the defects of a welding construction technology of a traditional bracket supporting system are overcome, the supporting structure facilitating cast-in-place construction of the pile cap is provided, and the construction efficiency of a wharf cast-in-place project is effectively improved.

The invention discloses a supporting structure stress monitoring method and device for deep foundation pit construction and a medium, and relates to the field of intelligent construction sites. The method comprises the steps that in the construction stage of a deep foundation pit, environment data of a supporting structure at different monitoring positions and supporting structure body data are collected; obtaining theoretical support structure body data of the support structure at different monitoring positions according to a pre-constructed correction regression model and the environment data; obtaining deviation values of the supporting structure at different monitoring positions according to the theoretical payment structure body data and the supporting structure body data; correcting the data of the supporting structure body according to the deviation value; and performing correlation analysis on the corrected supporting structure body data at different monitoring positions so as to perform stress monitoring on the supporting structure. By correcting the body data of the supporting structure, the actual state of the supporting structure can be accurately reflected, and deviation data which is not interfered by the environment can be accurately reflected.

The invention discloses a trench supporting structure for a geological poor area and a construction method. The trench supporting structure comprises an upper support, and the upper support is formed by arranging a plurality of parallel steel channels; the lower surface of the upper support is connected with adjustable diagonal bracings, and a vertical support is clamped between the adjustable diagonal bracings; the adjustable diagonal brace comprises two pieces of channel steel which are arranged in parallel, and the two pieces of channel steel are perpendicular to the multiple pieces of channel steel of the upper support; kidney-shaped holes penetrating through the upper surface and the lower surface are formed in the two ends of channel steel of the upper support, a plurality of penetrating threaded holes are formed in the upper surface of the adjustable diagonal brace at equal intervals, and the adjustable diagonal brace is connected with the kidney-shaped holes of the upper support in the mode that screws penetrate through the threaded holes. The vertical support is arranged between the two pieces of channel steel of the adjustable diagonal bracings; the device solves the problems that in the prior art, collapse is prone to occurring during construction in a poor geological area, and an existing concrete construction method is too long in construction period, low in efficiency and lack of an efficient supporting mode, and has the advantages that supporting can be rapidly conducted in a groove, and the construction efficiency and safety are guaranteed.

The invention provides a steel roof full-period deformation monitoring method and system based on multi-source sensor fusion, and belongs to the technical field of monitoring structural deformation or stress, and the method comprises the steps: laying a multi-source sensor network for synchronously collecting data; determining sliding block stress distribution data of the steel structure in the sliding process, and determining a local buckling risk area in combination with the dynamic vibration data; the steel roof is divided into a plurality of asymmetric sliding blocks, and a sliding path correction instruction is generated in combination with the geometric state data of the sliding track; compensating the geometric deviation of the slip track in real time, and predicting a critical deformation threshold value of a subsequent construction stage by combining an initial gap parameter of the pre-embedded support structure; and after sliding is completed, steel column falling track data are tracked in real time, the unloading rate is dynamically regulated and controlled in combination with the critical deformation threshold value, and the unloading path is calibrated through the compensated sliding track geometric state data till the deformation error is converged within the preset tolerance range. And the construction precision and safety are effectively improved.

The invention discloses a simply-supported bridge external prestress supporting structure and an implementation method thereof, and relates to the technical field of bridge reinforcing engineering, the simply-supported bridge external prestress supporting structure comprises a bridge, a bridge abutment or a bridge pier, and further comprises an oblique supporting system, and the oblique supporting system comprises oblique supporting rods, hinge plates, anchoring plates, reinforcing rods and longitudinal tie bars; the hinged plate is anchored on a bridge abutment or a bridge pier, one end of each oblique supporting rod is supported at the bottom of the bridge, the other end of each oblique supporting rod is hinged to the hinged plate, the anchoring plate is a full-length steel plate and is anchored through the reinforcing and reinforcing rods driven into the bridge abutment or the bridge pier, and one reinforcing and reinforcing rod is arranged at the installation position of each oblique supporting rod. The longitudinal tie bars are connected with the anchoring plates and the inclined supporting rods, and the inclined supporting rods are tensioned to support the bridge. The bearing capacity of the bridge is increased at low cost through in-vitro reinforcement, so that the traffic safety under the condition that the traffic load of the bridge is increased for a short time is met, and meanwhile, the adverse effects of reinforcement and reconstruction on traffic are reduced.

The invention discloses a soft rock geological cavern tunneling construction method, belongs to the technical field of underground engineering tunnel construction, and aims to solve the safety risk problem caused by high surrounding rock deformation rate, insufficient supporting structure stability and dynamic adjustment lag in the tunnel construction process under the soft rock geological condition. According to the method, an upper pilot tunnel area, a middle pilot tunnel area and a lower pilot tunnel area are divided in the axial direction of a tunnel and excavated step by step, multiple layers of steel arches are sequentially installed, prestressed anchor rods are constructed, a real-time stress monitoring and early warning system is combined, the supporting force of adjustable hydraulic supporting rods is dynamically adjusted, and the deformation rate and the stress level of surrounding rock are controlled. According to the technical scheme, the method is characterized by comprising partition and layering excavation, steel arch and anchor rod collaborative supporting, stress monitoring point arrangement and a dynamic compensation mechanism. The method is mainly used for safe and efficient tunneling of the soft rock geological tunnel, the surrounding rock stability and the construction safety are remarkably improved through refined construction control and real-time feedback adjustment, and the method is suitable for tunnel engineering construction under the complex geological condition.

The invention relates to the technical field of foundation pit engineering, and discloses a foundation pit enclosure structure soil pressure calculation method and system under bilateral coupling deformation, and the method comprises the steps: obtaining deformation correlation parameters of an enclosure structure of a target foundation pit; initial deformation fitting is conducted on the enclosure structure, active and passive initial soil pressure of the enclosure structure is obtained, and the initial soil pressure is associated with the embedding depth of the enclosure structure; the deformation correlation parameters and the initial soil pressure are input into the bilateral coupling deformation calculation model, and horizontal deformation of the two sides of the enclosure structure is obtained; inputting the horizontal deformation of the two sides into a non-limit soil pressure calculation model to obtain the soil pressure of the enclosure structure; and if the horizontal deformation on the two sides and the soil pressure do not meet the convergence requirement, inputting the soil pressure into the bilateral coupling deformation calculation model for iteration. According to the method, the stress conditions of the two sides of the enclosure structures can be considered, so that the mutual influence of stress between the enclosure structures on the two sides is coupled.

The present invention provides a method and device for predicting deformation of supporting structures of foundation pits around dense buildings, which can be applied to engineering construction and the field of artificial intelligence technology. The prediction method includes: obtaining excavation information of the foundation pit and soil information, supporting structure information and hydrological information corresponding to the foundation pit; inputting excavation information, soil information, vertical support information, horizontal support information, inertial information and hydrological information into a deformation prediction model, and outputting initial prediction results, wherein the initial prediction results include multiple horizontal deformation information, deformation peak values ​​and deformation types, and the horizontal deformation information characterizes the horizontal deformation results of multiple points in the supporting structure; based on multiple horizontal deformation information, deformation peak values ​​and deformation types, determining the target prediction results corresponding to the foundation pit. Through this method, the deformation of the supporting structure under complex load conditions can be predicted more accurately, so that the accuracy of the target prediction results is higher, and the safety, stability and economy of the foundation pit project are improved.

The invention belongs to the technical field of foundation pit supporting, and discloses a foundation pit supporting structure which comprises a supporting anchor rod pipe body and is characterized in that a plurality of evenly-distributed limiting through holes are formed in the left side and the right side of the outer surface of the supporting anchor rod pipe body, and a coaxial disassembly and assembly recycling type operation rod is arranged in the middle of the supporting anchor rod pipe body in a penetrating mode; a plurality of tensile positioning short rods are movably connected to the side face of the disassembly and assembly recycling type operating rod and correspond to the limiting through holes in a one-to-one mode, and the ends, close to the axis of the supporting anchor rod pipe body, of the tensile positioning short rods are movably connected with the disassembly and assembly recycling type operating rod. The ends, away from the axis of the supporting anchor rod pipe body, of the tensile positioning short rods are movably connected into the limiting through holes in a sleeved mode. Due to the arrangement of the disassembly and assembly recovery operation rod, the recovery operation rod body is rotated under the limitation of the limiting through hole, and the tensile positioning short rod can be driven to move in the radial direction of the supporting anchor rod pipe body through the cooperation of the linkage sliding groove and the limiting clamping groove, so that the effects of supporting and convenient recovery are achieved.

A method, includes securing a component of an anchor apparatus to a board of a form utilized to form a concrete support structure; coupling an anchor of the anchor apparatus relative to the component by engaging a threaded segment of the component with a cooperative threaded segment of the anchor; depositing concrete within the form to create the concrete support structure, the concrete support structure at least partially enclosing the anchor; removing at least a portion of the board of the form; and accessing the anchor through a cavity in the concrete structure formed by the component.

The invention relates to the technical field of foundation pit supporting structure monitoring, and discloses a comprehensive pipe gallery foundation pit supporting structure health monitoring system, which comprises a monitoring unit, an excavation unit, an analysis unit and a judgment unit, and is characterized in that the monitoring unit is used for dividing a monitoring target object into three monitoring areas, collecting heterogeneous monitoring data of each monitoring area in real time, and sending the heterogeneous monitoring data to the excavation unit; according to the method, a monitoring object is divided into three areas, heterogeneous data are collected in a targeted mode, creep characteristics are excavated, a regionalized time-varying threshold value is generated, the problems of fixed threshold value and noise covering are solved, and the method has the advantages that the monitoring object is divided into three areas; according to the method, early-stage tiny progressive deformation caused by soft soil creep can be found in time, damage is positioned and graded early warning is performed through progressive damage judgment in combination with the regional damage deviation degree and the cross-regional correlation value, collaborative early warning can be triggered, and the monitoring accuracy, the positioning precision and the early warning timeliness are improved.

The invention relates to the field of railway tunnel construction, in particular to an unsymmetrical soft rock large-deformation tunnel supporting structure system and a construction method thereof. Comprising the steps of 1, establishing a primary support deformation database; 2, selecting different positions to reserve deformation characteristic values; thirdly, a primary support section is independently designed; fourthly, primary support construction is independently designed; step 5, performing section construction at the initial stage of the original design; sixthly, compensation grouting is conducted; and seventhly, secondary lining construction is conducted, the first step to the seventh step are repeated for multiple times, and the large deformation section of the soft rock is biased. The problem of repeated arch changing treatment of the soft rock bias tunnel can be prevented and reduced, the situation that when the tunnel primary support deforms, the whole section is synchronously enlarged, and secondary lining concrete in part of a section is seriously overconsumed is avoided, the construction efficiency is improved, and the cost is saved.

A beam support structure that is formed of a first bracket for supporting a first beam or post; and a second bracket for supporting a second beam. Each of the first and second brackets are of U-shape including a base wall and a pair of side walls that extend orthogonal to the base wall, and a support flange that extends parallel to the pair of side walls and an arm having respective ends that connect between the respective flanges of the first and second brackets. The arm is secured between the first and second brackets, while allowing multiple different secured positions between the first and second brackets. A leveling member may be associated with each bracket and arm.

The invention discloses an ultra-deep foundation pit supporting system selecting and monitoring method based on the digital technology, and belongs to the technical field of building construction.By inputting the specification, the geological condition, the hydrological condition and the load condition of a foundation pit into a foundation pit supporting system, a supporting system result meeting the specification is calculated and output; a complete three-dimensional foundation pit supporting system model is rapidly created in combination with Dynamo and Revit, a supporting structure construction drawing is output, and a material list and a calculation report of a supporting structure are generated; then, construction is conducted; the foundation pit supporting system model is imported into the monitoring platform, monitoring data of the foundation pit supporting system are obtained and mapped into the foundation pit supporting system model, and the current foundation pit supporting deformation condition can be visually analyzed; a data resource library is established in the monitoring platform, the monitoring data is compared with the data resource library, and the future foundation pit deformation condition is predicted; and the monitoring platform is connected with an alarm device, and when the monitoring data reaches a threshold value or the predicted deformation condition reaches the threshold value, the alarm device starts to report early warning information.

The invention relates to a complex soft rock double-layer primary supporting super-large section tunnel and a construction method. The complex soft rock double-layer primary supporting super-large section tunnel comprises a long pipe shed cover arch supporting system, a deformation control strong supporting structure, an anti-disengaging early-warning lining pouring trolley, a temporary inverted arch deformation control structure and a buffering yielding supporting system. The method has the beneficial effects that the curved surface formwork can be rapidly installed on the upper portion of the guide pipe and the lower portion of the steel arch frame, the installation efficiency is high, stability is good, and the construction period is shortened; a long pipe shed and a small guide pipe penetrate through the deformation control strong supporting structure and are driven into a tunnel, grouting is conducted, the overall stability of the supporting structure is enhanced, and the complex soft rock geology is reinforced; concrete pouring is monitored in real time, and the compactness of vault concrete is guaranteed; section steel is clamped in the inverted arch, reinforcing connecting ribs are welded between the section steel in a penetrating mode, surrounding rock collapse is prevented, and tunnel construction safety is guaranteed. And a buffer yielding support device is arranged between the interface and the double-layer arch frame, so that the pressure at the interface of the layered rock and soil stratum is in smooth transition, and the overall balance is improved.

The invention discloses a construction method for going out of a hole of an ultra-shallow buried large-section soft rock tunnel, and relates to the technical field of tunnel construction.The construction method comprises the steps that a guide wall is constructed on a stratum where a hole to be formed is located, and a guide structure is buried in the guide wall; constructing a tunnel portal supporting structure on the stratum where the tunnel portal is located along the guide structure; concrete is poured into the first grouting pipes, so that a primary pipe shed supporting structure is formed; the tunnel face of the tunnel is excavated towards the hole opening to the position away from the hole opening by a first preset distance; a three-step method is adopted to excavate the tunnel to the position away from the portal by a second preset distance, and an upper step tunnel face, a middle step tunnel face and a lower step tunnel face are formed; a small pilot tunnel is excavated in the tunnel face of the upper step towards the portal until the tunnel is communicated with the outside; according to the method, the possibility of collapse of the ultra-shallow-buried large-section soft rock tunnel in the out-of-hole process can be reduced.