3993 results about "Structure support" patented technology

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 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.

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 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 provides a temporary supporting structure for mounting a girder of a small side box combined hybrid girder cable-stayed bridge and a using method, and belongs to the technical field of bridge construction. Comprising a lower bearing plate, upper bearing plates are arranged on the left side and the right side of the upper portion of the lower bearing plate, tightening hanging rods are arranged on the left side and the right side of the lower end of each upper bearing plate, a sliding seat is arranged at the upper end of each upper bearing plate, a jacking module is arranged in each sliding seat, a connecting plate is arranged above each jacking module, and a longitudinal supporting module is arranged at the lower end of each connecting plate. By means of the transverse hydraulic self-locking rod, when a beam body generates transverse displacement when encountering wind loads, partial displacement can be automatically released, and automatic resetting can be achieved after the displacement acting force value is reduced, and by means of the front-back double-section type contraction transverse support formed by the butt joint rod and the conical rod and in cooperation with the transverse buffering spring, the transverse buffering effect can be achieved. Vibration energy generated in the working process of construction machinery can be absorbed, the influence of construction vibration on the temporary supporting structure is reduced, and the safety of the temporary supporting structure is improved.

The invention relates to a replaceable sliding anti-seismic device of a steel spring vibration isolator, which is used on a building foundation with multiple requirements of vibration isolation and seismic resistance, and belongs to the civil engineering industry. A replaceable sliding anti-seismic device of a steel spring vibration isolator comprises an upper structure, an upper buttress, a lower structure, a lower buttress, a central circular steel tube concrete column, a trapezoidal slidable connecting plate, a replaceable energy dissipation structure, a connecting pin, the spring vibration isolator, a vibration isolation rubber pad, a leveling steel plate and a bolt. The spring vibration isolators are connected with an upper structure and a lower structure through bolts to reduce the influence of vibration and small seismic load on an upper building, the trapezoidal slidable connecting plate is used for connecting the central circular steel pipe concrete column and the lower structure, and under the normal working condition, the replaceable energy dissipation structure supports the building and achieves the energy dissipation effect under the seismic load effect. After an earthquake, the use function can be quickly recovered by replacing the energy dissipation structure, and the concept of multi-stage vibration isolation and earthquake resistance is achieved. According to the invention, the comprehensive performance of vibration isolation and seismic resistance of the building is greatly improved.

The invention discloses a circular foundation pit diaphragm wall deformation calculation method and system based on a vertical elastic foundation beam. The method comprises the steps that S100, a design scheme and design parameters of a circular foundation pit are collected; s200, establishing a vertical elastic foundation beam calculation model of the circular foundation pit supporting structure, and inputting the design scheme of the circular foundation pit into the model; s300, dispersing the beam into a plurality of calculation points, dividing the excavation step into a plurality of load increment steps, and calculating each load increment step of the beam; and S400, based on the load increment step of the beam, calculating an accumulated deformation amount, and outputting the accumulated deformation amount. A bending equation of a vertical elastic foundation beam is adopted to establish a calculation model of a circular foundation pit supporting structure, an inner supporting structure is introduced into the bending equation of the beam, the excavation process is decomposed into a plurality of excavation steps and increment steps, an iteration method is adopted for calculation, and the soil pressure distribution and deformation process of each stage in the excavation process is accurately simulated. Therefore, the accuracy of deformation calculation of the circular foundation pit diaphragm wall is improved.

The invention discloses a prefabricated conical shell steel supporting structure capable of being hoisted for squat silo construction. The prefabricated conical shell steel supporting structure comprises a conical shell wall plate assembly, a ring beam assembly, a radial beam, a lifting lug assembly, an adjustable supporting assembly, an anti-swing assembly, a connecting assembly, an auxiliary positioning assembly and a sling connecting assembly. Core components such as the conical shell wall plate and the supporting framework are all prefabricated in a factory, the quality is controllable, splicing and hoisting are only needed on site, high-altitude erecting operation is greatly reduced, the high formwork erecting risk and the hidden danger of falling objects from high altitudes are reduced, hoisting stability is high, safety is improved, hoisting stress is dispersed through the lifting lug stiffening plates, and the hoisting efficiency is improved. The anti-swing assembly and the cable wind rope cooperatively control swing, it is ensured that the overall hoisting process is stable, structural collision and stress overload are avoided, the splicing precision is high, the adaptability is high, adjustability during installation is achieved through the adjustable supporting assembly arranged on the squat silo top, and it is ensured that the hoisted steel supporting structure can accurately fall on the preset position of the squat silo top.

The invention provides a construction tunnel surrounding rock stability evaluation method based on digital twinning and a related device. The method comprises the following steps: constructing a tunnel digital twinning model of a tunnel construction section; geological data and real-time progress position data of a target mileage segment in the construction process are obtained; mapping the geological data to a digital twinborn model, and updating soil body unit parameters; according to the real-time progress position data, synchronously updating activation states of a soil body unit and a supporting structure unit in the model by adopting a state change method; and extracting a surrounding rock stability index based on the updated digital twinborn model, evaluating the stability of the current construction tunnel surrounding rock in combination with a safety threshold to obtain a construction tunnel surrounding rock stability evaluation result, and constructing a tunnel construction process dynamic mapping-oriented digital twinborn model by utilizing the description capability of a finite element method on structural mechanical behaviors. Geological conditions and construction progress information which are obtained in real time on site are used as input, and the construction period structure safety risk of the drilling and blasting method tunnel is evaluated and predicted.

The invention discloses a variable cross-section cast-in-place box girder arc-shaped wing plate supporting structure which comprises a disc buckle full supporting frame, an adjusting vertical rod is arranged at the upper end of the disc buckle full supporting frame, a jacking is arranged at the upper end of the adjusting vertical rod, main keels are arranged at the upper end of the jacking, multiple sets of auxiliary keels are arranged at the upper ends of two main keels, and formworks are arranged at the upper ends of the auxiliary keels. A positioning strip is arranged on one side of the upper end of the template; a height adjusting block is arranged on one side of the positioning strip The arc-shaped truss is arranged obliquely above the formwork, and one end of the arc-shaped truss is located at the upper end of the height adjusting block. The method has the advantages that the arc-shaped truss is machined according to the arc-shaped size of the box girder wing plate, the size and radian precision is high, the construction quality is easy to guarantee, the applicability is high, the variable cross-section height is partitioned, the height is adjusted through the height adjusting blocks, the machining model number of the arc-shaped truss is reduced, and the machining cost is reduced. Only several standard parts are adopted for machining, the problem that the sizes of wing plates of the variable cross-section sections are inconsistent can be solved, the positioning strips are adopted for installation and positioning, and the installation deviation of the arc-shaped truss is reduced.

The invention relates to a deep and large foundation pit supporting automatic monitoring early warning and dynamic adjusting system, and relates to the technical field of engineering monitoring, and the system comprises foundation pit supporting structure automatic monitoring devices which are disposed at the positions of all monitoring items of a foundation pit and are used for collecting real-time monitoring data; the monitoring data processing analysis and early warning platform is in communication connection with the monitoring device and is used for analyzing the real-time monitoring data and determining the risk level according to the displacement of the deformation value of the monitoring position exceeding the safety threshold value; the supporting structure automatic adjusting device is in communication connection with the early warning platform and comprises a control center and hydraulic equipment, the control center obtains risk data including the risk level, the risk position importance degree and the structure importance degree based on the deployment position of the monitoring device, and the hydraulic equipment controls and adjusts the length of the telescopic rod at the corresponding risk position in real time according to the risk data. The functions of real-time monitoring, early warning and dynamic adjustment of the supporting structure can be achieved, so that the safety and efficiency of foundation pit supporting construction are improved.

The invention provides an anchor-plate-injection collaborative supporting method for active water sealing. The anchor-plate-injection collaborative supporting method is applied to various laneways penetrating through water-containing stratums, especially to construction of vertical shafts constructed through a freezing method. During freezing method construction, a freezing wall is formed firstly, a section height is excavated, an anchor rod is drilled and constructed after the section height is excavated, and if water exists after excavation, forced drainage needs to be carried out to enable the displacement to be larger than the water inflow so as to ensure that no accumulated water exists on a working face; the steel plates are fixed through anchor rods, so that grouting gaps are formed between the steel plates and the well wall; a gap between the bottom edge of the steel plate and the well side is blocked by a certain height through foam; grout is injected through a grouting pipe on the lower portion of the steel plate, and a primary supporting structure is formed after solidification; secondary and more supporting can be carried out immediately or after primary supporting of multiple section heights is formed, and a permanent supporting structure is formed. A traditional passive waterproof mode is broken through, and active water plugging can be achieved; the method adapts to various construction methods and stratums; the temporary support is essentially different from a traditional anchor-shotcrete net temporary support, and the construction efficiency is higher.

The invention relates to the technical field of tunnel engineering disease treatment, in particular to a construction method of a drainage system for karst tunnel inverted arch upheaval disease treatment, which comprises the following construction steps: S1, arranging settlement monitoring points in a disease section tunnel, and arranging a reinforcing structure in a lining arch foot area; and S2, the existing disease inverted arch is broken and removed section by section according to the preset length, and temporary supporting is carried out in time. And S3, an overhaul window is dug in the lining through a water mill drill, and a supporting structure is synchronously installed. And S4, a foundation trench is excavated in the bottom of the inverted arch, a concrete strip-shaped foundation is poured to serve as a foundation of the steel corrugated pipe arch culvert, the steel corrugated pipe arch culvert is installed, the axis of the steel corrugated pipe arch culvert is consistent with the karst cave water flow direction, and the steel corrugated pipe arch culvert is in sealed butt joint with the confluence overhaul groove. And S5, a drainage pipe is pre-buried in the inverted arch reconstruction section, the confluence overhaul groove and the central drainage ditch are connected, and finally concrete is poured to seal the inverted arch structure. The method effectively solves the problem of upheaval of the inverted arch caused by water burst of the deeply-buried karst cave, reduces the damage of the lining structure, and improves the long-term stability of the tunnel.

The invention relates to the technical field of compensators, in particular to an anti-leakage metal compensator which comprises a shell, an adjusting structure, an anti-seepage structure, an angle adjusting structure, a buffering structure, a supporting structure and a pipeline. The length of the compensator is conveniently and flexibly adjusted through the adjusting structure, the compensator can be conveniently installed under the condition of different installation intervals, meanwhile, the problem that compensators of different sizes need to be repeatedly replaced due to size deviation is solved, flexibility is high, the angle adjusting structure is used in cooperation with the buffering structure, and the service life of the compensator is prolonged. Compared with the prior art, axial and angular deviation is compensated on the same compensator, meanwhile, the axial compensation capacity is improved, practicability is high, the supporting effect on the compensator during installation is conveniently achieved through the arrangement of the supporting structure, the compensator is effectively supported between two pipelines, the situation that manual auxiliary lifting is needed during installation is avoided, the installation efficiency is improved, and stability is high.

The invention relates to the technical field of truss building construction, and discloses a large-span truss construction method which comprises the following steps that fringe trusses are fixed to steel pipe concrete columns at the two ends respectively; masts are arranged on the fringe trusses in the vertical direction, the masts and the fringe trusses are connected through back pull rods to form a triangular supporting structure, and then tension suspension cables are installed between the masts on the two sides; after the fringe truss in the middle is installed, closed and accepted, all the telescopic mechanisms, the suspension cables, the back pull rods and the masts are sequentially and alternately dismantled, the overhanging ends of the secondary trusses are suspended through the telescopic mechanisms to be alternately installed, the limitation of an overall lifting method on the lifting height, the lifting path and a large-area assembly site is broken through, and the construction efficiency is improved. The potential safety hazard caused by post-repair mounting of the support area is avoided; meanwhile, the high-altitude work amount of component installation, welding and the like in a high-altitude bulk method is greatly reduced, the safety risks of falling, object hitting and the like are reduced, the construction process is simplified, the construction efficiency is improved, and the construction period is shortened.

The present invention relates to the technical field of water conservancy engineering, and specifically to a cofferdam for ship lock reconstruction and a construction method. A cofferdam for ship lock reconstruction comprises a concrete cofferdam body and a hollow concrete support structure. The concrete cofferdam body is closely attached to the walls on both sides of the ship lock and extends along the direction of water flow. The hollow concrete support structure is arranged between two adjacent concrete cofferdam bodies. The hollow concrete support structure is fixedly connected to the concrete cofferdam body by a connecting device. The hollow concrete support structure comprises a bottom layer, a hollow layer, and a top layer. Multiple rows of cavities arranged in parallel are formed inside the hollow layer. Blasting devices are equidistantly embedded in the concrete wall between two adjacent cavities. This application forms a stable water retaining barrier by placing the concrete cofferdam body close to the ship lock wall. The hollow layer design can reduce its own weight. In addition, the blasting device embedded in the support structure can achieve efficient and controllable demolition compared to traditional mechanical or manual demolition, which can greatly shorten the construction period.

The invention provides a large-span beam formwork three-dimensional parameterization deepening design method, and belongs to the technical field of building construction.The method includes the steps that geometric parameters of a large-span beam three-dimensional parameterization model are obtained, and a multi-scale homogenization mechanical analysis model is established to describe nonlinear characteristics of a concrete material; an arc length control method is combined with a Newton-Raphson iterative improved algorithm to carry out large-deformation nonlinear analysis to calculate deformation control parameters, safety performance is evaluated, support structure parameters are adjusted, and a double-layer game optimization model is established to determine optimal template support system parameters. On the basis of a bending-torsion coupling analysis result, a force transmission path diagram is established through a load transmission path generation function, and an optimal force transmission path is determined by adopting a gradient optimization algorithm, so that the problems that the design of a large-span beam formwork supporting system lacks an accurate mechanical calculation basis, and structural deformation and stress distribution cannot be accurately predicted are solved; and the design of the supporting system is not reasonable.

The invention discloses an underground powerhouse composite aluminum plate modular construction system and method, belongs to the technical field of underground building decoration, and solves the problems that in traditional underground powerhouse decoration, aluminum plates crack due to rock wall deformation, and the construction precision is difficult to guarantee. According to the technical scheme, the modular composite aluminum plate unit is composed of a light keel frame, a filling layer and a decorative aluminum plate layer, and an independent supporting structure is formed through rigid connection of an integral keel net and a generator layer concrete constructional column; the flexible telescopic device is arranged in a gap between the keel net and the rock wall in an embedded mode. And the digital dynamic control module monitors flatness and deformation data in real time through a laser range finder and a vibration sensor, and automatically adjusts the displacement of the inclined long hole of the connecting corner brace and the pre-tightening force of the expansion bolt by using an intelligent feedback actuator. The system is mainly used for high-precision modular decoration construction of an underground powerhouse generator layer, and can effectively adapt to rock wall deformation and ensure that the construction quality is stable and reliable.

The invention relates to the technical field of bridge pier load monitoring, in particular to a bridge pier load monitoring method and system in bridge construction, and the method comprises the following steps: based on a bridge pier foundation structure, building the correlation among multiple nodes through calculating the distance among the nodes, the physical characteristics and the mechanical characteristics; according to the method, the bridge pier space structure diagram is established, node load characteristics are updated through the diagram convolution operation, the monitoring precision of bridge pier bearing load changes is remarkably improved, combined modeling of time sequence data and space characteristic data is combined, the space-time law of the load changes can be recognized, the construction scheme is optimized, and the construction efficiency is improved. The layout and configuration of construction equipment are dynamically adjusted, the dynamic adjustment of the adaptive convolution kernel optimizes feature aggregation according to the features of the support structure, the response capability to load change is improved, the safety and high efficiency in the construction process are ensured, the method provides accurate real-time monitoring and dynamic optimization, and the construction efficiency is improved. And monitoring delay and errors in a traditional method are avoided.

The utility model relates to the technical field of cast-in-place pile construction, and discloses a deep foundation pit cast-in-place pile supporting structure which comprises a pull rod installed on the inner wall of a deep foundation pit, an anchor pile inserted into a foundation of the deep foundation pit and a supporting assembly used for supporting the cast-in-place pile, a butt-joint hole is formed in the anchor pile, one end of the pull rod is connected with the inner wall of the butt-joint hole, and the other end of the pull rod is connected with the inner wall of the butt-joint hole. The other end of the pull rod is connected with the inner wall of the supporting assembly. A rotatable long rod is arranged in the pull rod, a plurality of arc-shaped blocks are installed on the two sides of the long rod in the axial direction at intervals, and the angle difference between every two adjacent arc-shaped blocks is 180 degrees. According to the deep foundation pit cast-in-place pile supporting structure, by arranging the anchor piles, the pull rods and the supporting assemblies, the cast-in-place piles and the land around the deep foundation pit can be firmly combined, the situation that the cast-in-place piles are fractured due to the fact that the cast-in-place piles are subjected to too large soil pressure in the using process in the deep foundation pit is prevented, and the stability and reliability of the cast-in-place piles are improved; and the supporting structure does not occupy the pit bottom space of the deep foundation pit, and foundation pit constructors and machines can conduct construction at the pit bottom conveniently.

The utility model discloses an anti-shake double-channel steel joist structure, which comprises a horizontally arranged support beam, the support beam comprises two channel steels of which webs are vertically arranged and openings are opposite, and opposite semicircular grooves are correspondingly formed in flanges on the upper and lower sides of the two channel steels; opposite first connecting holes are formed in the positions, corresponding to the two sides of the semicircular groove, of webs of the two steel channels. A dragging and supporting lead screw is vertically arranged between the semicircular grooves of the two steel channels, a disc adjusting nut is installed on the dragging and supporting lead screw in a threaded fit mode, and the disc adjusting nut abuts against the upper side of the supporting beam. Lead screw fastening bolts are arranged in the first connecting holes in a penetrating mode, under the fastening effect of the lead screw fastening bolts, the flanges of the two pieces of channel steel can be close to each other, and the groove walls of the semicircular grooves of the two pieces of channel steel are tightly attached to the dragging and supporting lead screw. The supporting structure is simple in structure and convenient to construct, and has good supporting stability and safety.

Systems, devices, and methods for additive manufacturing of objects are provided. In some embodiments, a device for supporting an object during an additive manufacturing process includes a build platform having a surface, and a plurality of support structures extending above the surface of the build platform. Each support structure can be configured to couple to a portion of an additively manufactured object. The device can also include a plurality of actuators, each actuator being configured to adjust a position of a corresponding support structure relative to the build platform.

The utility model relates to a double-slope multi-section cable string truss structure system, belongs to the technical field of building structures, and solves the problem that in the prior art, a large-span truss structure occupies a large space in the longitudinal direction, so that the clearance height is too low. The device comprises a cable string truss structure and a supporting structure, the cable string truss structure comprises multiple rows of space truss structures arranged in parallel, side cables, middle cables and truss connecting pipes connected among the multiple rows of space truss structures. The lower portion of the space truss structure is fixedly connected with side cables and middle cables, and the middle cables and the side cables are arranged in a staggered mode. The side cables and the space truss structure are supported through a plurality of side cable supporting rods. The middle cable and the space truss structure are supported through a middle cable supporting rod. The double-slope multi-section cable string truss structure system has the effect that the indoor clearance height of a supporting system is increased on the premise that large-span supporting is achieved.

The invention discloses a temporary structure suitable for an assembly type station ending end, which comprises a temporary support structure arranged in a shape like a Chinese character'tian ', the temporary support structure is divided into a foundation support frame provided with an outer ring and a cross-shaped inner support frame body arranged between the foundation support frames, and the temporary structure further comprises an underpinning system arranged in the temporary support structure; through the construction method and structure of firstly building temporary steel beam columns and firstly supporting and then underpinning, the assembly starting point and end point positions of the full-prefabricated rectangular flat-top assembly type station are suitable for the working condition, the method can solve the problem of space and time conflict between the assembly trolley and the temporary steel stand columns, it is ensured that the assembly trolley is normally put into use, and the construction efficiency is improved. Meanwhile, the mounting and dismounting workload of the temporary section steel beam column is reduced, the construction efficiency is improved on the premise of ensuring the splicing quality, the high-place operation risk is reduced, meanwhile, normal construction of a post-pouring beam column system can be ensured, and the mounting and dismounting amount of large section steel components is reduced.

The invention relates to the technical field of building construction, in particular to a digital twinning-based building foundation construction method, which comprises the following steps of: constructing a digital twinning body based on a BIM (Building Information Modeling) technology; during the foundation pit overwintering period, the stress and the soil body temperature of the supporting structure are collected at the preset detection frequency and synchronized to the digital twinborn body; the freeze-thaw damage characterization value of the supporting structure is calculated according to the hysteretic loop area surrounded by the stress-temperature curve within the preset temperature period, and the construction risk level of the deep foundation pit is determined according to the freeze-thaw damage characterization value; when the three types of construction risk levels are judged, the displacement of the supporting structure at the key depth is collected, a deformation recovery characterization value is obtained, an adjustment strategy when the standard is not reached is determined according to the deformation recovery characterization value, the adjustment strategy is fed back to a physical construction site to be executed, and the data and the disposal result are recorded in a case library; and optimizing the digital twinning model. The intelligent level of building foundation construction is improved.

The invention relates to the technical field of steel structure construction, and particularly discloses a steel structure welding butt joint device for steel structure construction, which comprises a fixing structure, a first supporting structure and a second supporting structure, the fixing structure is detachably clamped on a bearing column or a cross beam of a steel structure, the first supporting structure is detachably arranged on the fixing structure, and the second supporting structure is detachably arranged on the bearing column or the cross beam of the steel structure. The first supporting structures can be located on the front side and the rear side or the left side and the right side of the fixing structure, the first supporting structures are used for bearing and limiting steel structures in butt joint, the second supporting structures are detachably arranged on the fixing structure, and the second supporting structures can be located on the front side and the rear side of the fixing structure. The two sides of one side of the H-shaped steel frame are clamped and locked through the clamping bases, and stable clamping is achieved; meanwhile, steel frames in various shapes such as a rectangular shape, a square shape and a round shape can be clamped, fixed and subjected to bearing butt joint limiting through the clamping and bearing design, and butt joint devices do not need to be independently arranged for the steel frames in different shapes and specifications.

The invention relates to the technical field of tunnel construction, in particular to a hydraulic tunnel deformation treatment method. The method is used for forming a first supporting structure for the hydraulic tunnel with the deformed side wall after primary support and before secondary lining by reinforcing the primary support, drilling drainage holes in the side wall of the hydraulic tunnel, reducing the pressure of underground water and reinforcing the support by the secondary lining to form a second supporting structure; the drainage holes are formed to drain underground water, reduce the pressure of the underground water, reduce the softening influence of surrounding rock and reduce the influence of the tunnel underground water on the side wall, through the first supporting structure and the second supporting structure, the bearing capacity of the bottom of the tunnel is further improved, the deformation resistance of the tunnel structure is enhanced, and safety and stability of the tunnel structure are facilitated; and long-term safe use of the tunnel structure is guaranteed.

Support structure for an excavation pit in open-cut construction, characterized by being comprehensive, a first horizontal support (1) and a second horizontal support (2) arranged opposite each other, wherein a grooved plate (3) is embedded in one side of the first horizontal support (1) near the second horizontal support (2); and a support rod (4) arranged between the first horizontal support (1) and the second horizontal support (2), the support rod (4) comprising a telescopic element (41) and a fixed segment element (42) connected to each other; one end of the fixed segment element (42) away from the telescopic element (41) is detachably connected to the second horizontal support (2); and one end of the telescopic element (41) away from the fixed segment element (42) rests against the grooved plate (3).

The invention belongs to the field of deep foundation pit intelligent supporting systems, and particularly relates to a deep foundation pit intelligent supporting system based on oblique beam grid and digital twinning and a collaborative construction method.The deep foundation pit intelligent supporting system based on oblique beam grid and digital twinning comprises an oblique beam grid supporting structure composed of two-way crossed steel oblique beams, and the outer layer of each steel oblique beam is a Q355B steel pipe with the thickness not smaller than 12 mm; the inclined beam is filled with ultra-high performance concrete with the compressive strength not smaller than 150 MPa, the inclination angle of the inclined beam ranges from 25 degrees to 60 degrees, and an MEMS micro-electro-mechanical system sensor is pre-buried at a node; and the digital twin platform integrates the geological BIM model and the LSTM neural network prediction model. The bending rigidity is improved through the oblique beam grid supporting structure and the concrete filled steel tube composite beam, the inclination angle ranges from 25 degrees to 60 degrees, force flow transmission is optimized, and micro-strain-level stress monitoring is achieved through the MEMS sensors embedded in the nodes. A digital twin platform and an LSTM model are fused with 12-dimensional parameters, the 72-hour deformation prediction error is smaller than or equal to 1.5 mm, and compared with a traditional experience algorithm, the precision is improved.