61results about How to "Control deformation" patented technology

The application discloses a full-wrapping concrete truss structure and a construction method thereof, and belongs to the technical field of building structures. The full-wrapping concrete truss structure comprises a steel pipe truss assembly arranged between a plurality of steel plates, a wrapping assembly arranged outside the steel pipe truss assembly, and a concrete layer arranged outside the wrapping assembly. The construction method comprises the following steps: S1, preparing a top chord, a bottom chord, a vertical rod and a horizontal rod, wrapping the rods with a reinforcing mesh and welding to obtain a steel pipe truss shell; S2, arranging a diagonal web member assembly inside the shell and arranging a connecting mesh outside the shell to form a steel pipe truss monomer; S3, bolt connecting a plurality of monomers and bolt connecting the steel plates and the monomers at edges to form a steel pipe truss structure; and S4, vibrating the steel pipe truss structure after concrete partition pouring to obtain the full-wrapping concrete truss structure. The application can realize full wrapping of the steel pipe, ensure that the concrete layer is tightly bonded with the steel pipe, and improve the stability and safety of the structure.

This invention discloses a method for coordinated unloading-support-filling roadway protection in a longwall mining face of a steeply inclined coal seam. The method includes: arranging pre-reinforcing anchor bolts and cables at certain intervals in the transport roadway to reinforce the transport roadway in advance; pre-excavating a gap in the upper side of the transport roadway by blasting, and adding reinforcing anchor bolts and cables to the cross-section of the pre-excavated gap; arranging pressure-relief boreholes at certain intervals in the center of the coal seam roof at the pre-excavated gap, and implementing pressure-relief blasting after the support is moved; using I-beams and retractable modular roadway protection supports as the first and second layers of rock-blocking support, respectively; filling and sealing the goaf area above and on the sides of the retractable modular roadway protection supports with local filling materials; and arranging single hydraulic props for delayed support at a certain distance from the coal wall of the lagging face inside the roadway along the goaf. This method provides good support, significantly increases the speed of roadway retention in a longwall mining face of a steeply inclined coal seam, and effectively ensures safe and normal production.

The utility model discloses an I-shaped steel reinforcing assembly which comprises transverse I-shaped steel fixedly installed on the left side and the right side of I-shaped steel, a round sleeve is installed on the front side of the I-shaped steel, a square sleeve is installed on the surface of the round sleeve, and a plurality of bolts are arranged on the surface of the I-shaped steel in a penetrating mode. The round sleeve and the square sleeve are fixedly connected with the I-shaped steel through bolts, a connecting frame is fixedly connected to the surface of the square sleeve, an upper top plate is arranged at the top of the connecting frame and fixedly connected with the I-shaped steel, and a lower bottom plate is arranged at the bottom of the connecting frame and fixedly connected with the I-shaped steel. The round sleeve, the square sleeve and the connecting frame are used in cooperation, the periphery of a hole formed in the I-shaped steel is reinforced, then the supporting plate, the supporting frame and the triangular supporting plate are used in cooperation, the triangular supporting plate can support the lower bottom plate, and finally the round sleeve is stably installed on the periphery of the hole formed in the I-shaped steel.

The application discloses a MAX phase reinforced three-dimensional network tin-based lead-free solder and a preparation method thereof, and belongs to the technical field of lead-free solder. The MAX phase reinforced three-dimensional network tin-based lead-free solder is characterized in that the MAX phase reinforcing phase is distributed in the form of a three-dimensional continuous network skeleton at the grain boundary of a tin-based lead-free solder matrix; and the MAX phase reinforcing phase forms a continuous network penetrating through the whole tin-based lead-free solder matrix. The application also discloses an application of the MAX phase reinforced three-dimensional network tin-based lead-free solder in a high-temperature, high-load and high-frequency vibration scene. Through process innovation and performance optimization, the application aims to finally prepare a "high-strength, high-plasticity and high-temperature stability" tin-based three-dimensional network composite solder, solves the problem that a traditional tin-based single-component lead-free solder is prone to deformation and cracking due to thermal stress and mechanical load, improves the reliability of electronic packaging, and expands the application range of the tin-based lead-free solder in high-demand fields.

The application discloses a low-temperature ion nitriding method and application. The low-temperature ion nitriding method comprises the following steps: under a selected temperature condition, ion etching treatment is performed on the surface of a workpiece by adopting an arc-enhanced glow discharge process, and then plasma nitriding treatment is performed on the workpiece by adopting an arc-enhanced plasma process to obtain a nitriding workpiece; wherein, a positive and negative alternating voltage is applied to the workpiece in the arc-enhanced plasma process. The low-temperature ion nitriding method provided by the application can realize nitriding at a lower temperature, effectively improves the deformation degree of the workpiece, and is widely applicable to surface strengthening of cutters, molds and metal parts.

The utility model discloses a stay cable tension compensation and vibration suppression device for a large-span cable-stayed bridge, which comprises a tension compensation mechanism arranged at the end part of a stay cable, the tension compensation mechanism is fixed on an anchoring seat, a first vibration suppression mechanism and a second vibration suppression mechanism are arranged on the stay cable at an interval along the length direction of the stay cable, and the first vibration suppression mechanism and the second vibration suppression mechanism are fixed on the anchoring seat. The first vibration suppression mechanism and the second vibration suppression mechanism are connected through the longitudinal adjusting mechanism, and the first vibration suppression mechanism is fixed to the anchoring base. According to the utility model, the adaptive capacity of a bridge to environmental changes can be effectively improved, the stress uniformity of the stay cable is ensured, the deformation of the bridge is effectively controlled, and the service life of the bridge is prolonged, so that the operation efficiency and the safety of the cable-stayed bridge are ensured. The device is suitable for the technical field of long-term safe operation and maintenance of the large-span cable-stayed bridge in bridge engineering.

The present application relates to the technical field of large thin-walled cylinder processing, and discloses a clamping tool for large thin-walled cylinder processing and a use method thereof, the clamping tool comprises support frames arranged at the axial two ends of the large thin-walled cylinder respectively; the two ends of the support frame are in abutment with the inner walls of the large thin-walled cylinder respectively, and the length of the support frame is adjustable. The present application can adapt to the clamping requirements of cylinders with different diameters and has high universality.

The invention discloses a vibration isolation and noise reduction structure for an acoustic detection array of a deepwater aircraft, the vibration isolation and noise reduction structure comprises a primary vibration isolation structure arranged between an array supporting seat and an inner cylinder, and the primary vibration isolation structure is a vibration isolation and noise reduction main body structure; the vibration isolation and noise reduction main body structure is mainly formed by alternately stacking resin plate layers and composite rubber layers, and a positioning isolation rubber mat is arranged at the bottom of the vibration isolation and noise reduction main body structure; and mass blocks which are uniformly distributed along the circumference are embedded into the composite rubber layer to form a local resonance design composite structure. According to the invention, the noise generated during the navigation of the vehicle can be isolated, so that the influence of the noise on the array is effectively reduced.

This invention relates to an automated machining method for circular composite material covers, belonging to the field of functional composite material machining. By identifying the fiber direction through photography and combining it with C-axis positioning at the turning center, the method achieves automated machining of composite materials according to the fiber direction. Integrating an image-based dimensional measuring instrument into the production line enables rapid online full-size inspection. By using a machine tool's internal probe to pre-determine product dimensions and automatically compensate, the method automates first-piece debugging during frequent production changes. Controlling cutting forces through process methods, and precisely controlling clamping forces with small-diameter hydraulic cylinders and gauges, effectively controls the deformation of thin-walled parts. By modifying the chip conveyor to remove large particles and fibers, using multi-stage sedimentation to remove suspended particles, and employing a belt degreaser to remove lubricating oil, the method solves the problem of ensuring the composite material coolant meets emission standards. The process is automated and cost-effective.

The application provides a geotextile mat with electroosmosis function, and belongs to the technical field of geotextile mats.The application comprises a fixing rod arranged on a geotextile mat body;an electrode arranged on the geotextile mat body and fixed on the fixing rod, used for providing the geotextile mat with electroosmosis function, and also used for acting as a keel of the geotextile mat to limit deformation of the geotextile mat; a data collector arranged on the geotextile mat body, used for measuring tailing pressure and water content and transmitting to a power supply collecting device; and a potential measuring needle arranged on the data collector, used for measuring current and voltage between tailings and transmitting to the power supply collecting device.The application has the electroosmosis function by arranging the electrode and the data collector on the traditional geotextile mat and cooperating with the power supply collecting device, and can adjust the drainage intensity according to actual conditions, so that the monitoring-drainage integration is realized.

The utility model discloses a welding deformation prevention device, which relates to the technical field of electric vehicle production and manufacturing and comprises a driving part, a first pushing part and a second pushing part, the first pushing part and the second pushing part are both connected with the driving part, the driving part is used for being arranged between two pedal pipes, and the first pushing part and the second pushing part are connected with the driving part. The first pushing piece and the second pushing piece are used for making contact with the two pedal pipes correspondingly, and the driving piece is constructed to drive the first pushing piece and the second pushing piece to be away from each other so as to push the two pedal pipes to be away from each other. According to the welding deformation prevention device, the production cost of the electric vehicle is lower, deformation can be effectively controlled, and the production efficiency is higher.

The invention relates to the technical field of artificial intelligence, discloses an intelligent design method and system for pre-support of a side wall of a deeply-buried multi-structural-plane underground powerhouse, and aims to solve the problems of support lag and poor precision of an existing method. The scheme mainly comprises the steps that the value ranges of structural plane parameters and pre-support direction parameters are set; adopting discrete element numerical simulation to construct data sets under different working conditions; constructing a multi-structural-surface surrounding rock deformation prediction model for predicting the maximum deformation of the side wall; taking the prediction model as a fitness function of a particle swarm optimization algorithm, and building an optimization framework; acquiring actual structural plane parameters of a to-be-supported area, and iteratively searching through a particle swarm optimization algorithm to enable the fitness function to output a minimum optimal pre-supporting direction parameter; and before the side wall of the underground powerhouse is excavated, the next layer of rock mass which is not excavated is subjected to oblique pre-supporting according to the optimal parameters. According to the method, the pre-supporting opportunity is advanced, the supporting precision is improved, and the method is suitable for underground workshops in geological complex areas.

The present application relates to the field of building construction, and discloses a design method for inclined pile support layout based on construction facade, aiming at the problem of low matching degree between the existing inclined pile support layout theoretical model and actual working conditions, lack of real-time feedback leading to safety hazards, the present application constructs an initial inclined pile support demand model through multi-dimensional facade information, determines the layout position and parameters of sample inclined pile support according to the characteristics of different facade partitions, collects the actual stress and deformation data of the pilot inclined pile support as feedback, calculates the deviation and corrects the initial model, solves the global force vector and support distribution points using the corrected model, and automatically generates the layout position, angle, specification and installation parameters of the remaining inclined pile supports. The present application realizes dynamic coupling of the theoretical model and the actual working conditions through physical calibration of the pilot inclined pile support, eliminates systematic errors such as uneven foundation, material differences, etc., significantly improves construction safety and optimizes the distribution of inclined pile supports, and is suitable for complex construction scenes such as deep foundation pit support.

The utility model relates to bridge construction equipment technical field, and disclose a kind of pier column bent cap reinforcement framework piece shaping jig frame, including outer frame system, inner support system and connecting piece, the outer frame system includes first shaping frame, second shaping frame and third shaping frame, connecting piece two sides are respectively symmetrical and connect a group of outer frame system and inner support system, so that outer frame system and inner support system can be combined into a whole, the assembly and disassembly of jig frame are facilitated, construction efficiency is improved, and damage or deformation can be replaced individually in certain part, without replacing the whole jig frame, reduce construction cost.

This application relates to the technical field of furniture and proposes an easily adjustable modular desk, including a main desk body and a secondary desk body. The main desk body includes a main table frame and a main tabletop. The main table frame includes a main support frame, with main table legs on both sides. The main tabletop is mounted on the top of the main support frame, with one end serving as a connecting end. The secondary desk body includes a secondary table frame and a secondary tabletop. The secondary table frame includes a secondary support frame, with a rotating end and a supporting end at each end. The rotating end of the secondary support frame is equipped with a rotating component, which is vertically rotatably connected to the connecting end of the main tabletop. The secondary tabletop is mounted on the top of the secondary support frame, and the supporting end of the secondary support frame is equipped with secondary table legs. This application improves the usability of the desk.

The application is a construction method for replacing existing daylighting roof under normal operating conditions, comprising: installing a beam string structure high-altitude operation platform between structure columns; welding tensioning lugs and hoisting lugs on the top of the main beam; cutting an oblique opening in the middle of the main beam; making the left segment of the main beam and the right segment of the main beam produce vertical deformation to naturally form a staggered opening; when installing a new daylighting roof structure, a crane installs a new right segment of the main beam, connects a cable-stayed cable and tightens it; removing temporary cable-stayed measures, tensioning lugs, hoisting lugs, jacks and L-shaped steel plates, and installing new daylighting roof glass on the top of the new daylighting roof structure. The construction method effectively controls the internal force conversion and deformation of the daylighting roof steel beam during the removal process by setting pre-tensioning measures at the end of the steel beam and setting damping measures to delay the development of the staggered opening of the steel beam in the middle of the steel beam, and the construction process is safe and controllable, and the installation process of the new daylighting roof is opposite to the removal process.

The invention discloses a shaft combined construction method, and relates to the technical field of shaft construction. Comprising the following steps that firstly, construction preparation is conducted, a raise boring machine is selected, and well mouth positioning and raise boring machine leveling are conducted; step 2, guide hole construction: adopting graded drilling to form a guide hole penetrating through the upper and lower horizontal planes of the vertical shaft; 3, expanding excavation construction is carried out, slope expanding, drilling and blasting operation is carried out, and vertical shaft full-section zoning and layering expanding excavation is carried out from top to bottom with the guide hole as the center; fourthly, primary supporting is carried out, and supporting is synchronously carried out on the expanding excavation face when one layer is expanded and excavated in the zoning and layering expanding excavation process; and 5, secondary supporting is conducted, specifically, after expanding excavation and primary supporting construction are conducted to the bottom of the vertical shaft, secondary supporting is conducted on the wall face of the vertical shaft from bottom to top through the slip form. The mode that the raise boring machine guide hole and manual expanding excavation are combined is adopted, the problems of ventilation, drainage and deslagging existing in the manual expanding excavation process are solved in advance through the guide hole, the technology of secondary lining from bottom to top of the slip form is combined, and the time of the supporting procedure is greatly shortened.

The invention discloses a construction method for a tunnel underneath passing through a weak silt layer, and belongs to the technical field of tunnel construction, and the construction method comprises the following steps: S1, setting an enclosure structure: constructing two temporary drainage ditches along two sides of a preset tunnel foundation pit, and constructing two groups of continuous vertical waterproof curtains between the two temporary drainage ditches; s2, layered excavation is carried out, wherein earth excavation is carried out to the position 0.2-0.4 m below the designed elevation of an inner support; installing a waist beam and erecting a cross arm at the designed elevation of the inner support; s3, secondary excavation and bottom plate sealing are conducted, specifically, excavation continues to be conducted to the designed bottom elevation of the foundation pit; s4, backfill soil construction is conducted, specifically, backfill soil is conducted in gaps between the two side walls and the enclosure structure; and S5, construction of an upper structure: after the inner support is removed, constructing an anti-collision wall at the top of the construction side wall, sealing and pouring the backfill soil on the two sides of the foundation pit, and finally removing the drainage ditch to restore ground traffic. The method has the effect of effectively controlling deformation and risks in the tunnel construction process according to the characteristics of the soft sludge stratum.

The utility model belongs to the field of forging equipment technology relates to a fan -shaped roll forging forming die, the fan -shaped roll forging forming die is fan -shaped, and the outer surface is circular arc, the outer surface of fan -shaped roll forging forming die is set up the die cavity that has, the die cavity passes through both ends of fan -shaped roll forging forming die, and the depth of die cavity along the radial is successively decreased from one end of fan -shaped roll forging forming die to the other end. The fan -shaped roll forging forming die of the utility model has the depth gradual change die cavity, by adopting the fan -shaped roll forging forming die of reverse rotation cooperation die cavity depth gradual change, realized copper -clad aluminum bar blank single -time tip forming, replaced traditional multistage gradient rolling process, greatly promoted the tip efficiency and reduced the energy consumption, and the copper -aluminum composite layer stress is evenly distributed in the rolling process, effectively solved the end cracking and copper layer bulging defects and other problems, improved the tip qualified rate.

The invention relates to a titanium alloy hollow beam-shaped part and a hot forming method and a forming die thereof, and belongs to the technical field of titanium alloy forming methods. The forming method comprises the following steps: respectively carrying out hot-press forming on a bottom plate blank and a rib plate blank to obtain a bottom plate and a rib plate; the supporting block is arranged in the bottom plate, then the rib plate is arranged on the supporting block, the two ends of the supporting block are subjected to edge sealing welding through the blocking piece, the blocking piece is connected with the bottom plate and the rib plate, and the air pipe is connected to the blocking piece; the bottom plate and the rib plate which are subjected to edge sealing and welding are placed in a mold, diffusion bonding is conducted under heating and pressurizing, and metallurgical bonding is achieved at the joint of the bottom plate and the rib plate; and subsequent machining is conducted, and the hollow beam-shaped part is manufactured. The problems of welding seam performance weak areas and complex welding deformation generated by a traditional tailor-welding method are effectively solved, meanwhile, the defects that due to overall mechanical cold machining, material waste is large, and thin-walled parts are prone to deformation are overcome, and high-quality and high-efficiency near-net forming of the titanium alloy hollow beam-shaped parts is achieved.

The utility model provides a kind of CNC mechanical processing fixture for new energy automobile battery tray crossbeam, and battery tray crossbeam includes left casting, intermediate section bar and right casting, this CNC mechanical processing fixture includes bridge plate mechanism, left positioning mechanism for the positioning of left casting, right positioning mechanism for the positioning of right casting, left clamping mechanism for clamping and fixing left casting, right clamping mechanism for clamping and fixing right casting;Left positioning mechanism, right positioning mechanism, left clamping mechanism and right clamping mechanism are all fixed on bridge plate mechanism.The utility model solves the technical problem of how to overcome the existing new energy automobile battery tray crossbeam casting machining allowance in prior art, cannot meet its dimensional accuracy requirement, difficult to position and control deformation.

The utility model discloses a special welding tool for an airplane external equipment shelter, which belongs to the technical field of airplane equipment repair and is characterized in that a ground platform is arranged at the bottom, a welding frame is fixed on the ground platform, an upper platform is fixed at the upper part of the welding frame to serve as a two-layer operation platform, and a ladder is arranged between the upper platform and the ground; the bottom of the ladder is supported on the ground through a footing assembly. The square cabin chassis supporting device is simple and practical in structure, compared with manual supporting in the prior art, flatness of the square cabin chassis can be guaranteed, deformation can be controlled, the size can be guaranteed, the square cabin chassis supporting device has high practicability, convenience, accuracy and safety, and meanwhile safety accidents caused by manual supporting can be reduced.

The invention discloses a foundation pit supporting passive area soil body reinforcing structure and a construction method thereof. The structure comprises fender posts arranged along the periphery of a foundation pit; the cement soil reinforcement area is located in the passive area soil body behind the fender posts, and the cement soil reinforcement area is formed by meshing a plurality of cement mixing piles; the high-pressure jet grouting pile reinforcing band is arranged between the fender post and the cement soil reinforcing area, and the high-pressure jet grouting pile reinforcing band fills a gap between the fender post and the cement soil reinforcing area, so that the fender post, the high-pressure jet grouting pile reinforcing band and the cement soil reinforcing area are in close contact, and a continuous force transmission system is formed. The gaps between the fender posts and the cement mixing piles are filled with the high-pressure jet grouting piles, force transmission is smooth, the passive area soil reinforcement effect is greatly improved, fender post deformation is effectively controlled, and the safety and stability of a foundation pit are guaranteed.

The application discloses a grinding device, a method for adjusting grinding pressure and a plate loading and unloading mechanism, relates to the technical field of semiconductors, and is used for eliminating the influence of hard particles on the back surface of a wafer on a photoetch process, thereby improving the quality of semiconductor devices. The grinding device comprises a rotating part and a grinding part arranged on one side of the rotating part; the rotating part is used for fixing the relative position of the wafer and the grinding part and for driving the wafer to rotate; the grinding part has a grinding area for grinding the back surface of the wafer; and the shortest vertical distance from the rotating shaft of the rotating part to the edge of the grinding area is smaller than the radius of the wafer. The grinding device is applied to a polishing device.

The application discloses a high-safety pressing device, which comprises a base, a supporting frame arranged on the base, a pressing rod movably arranged on the supporting frame, a pressing head arranged at the bottom end of the pressing rod, and a nozzle connected with the pressing head, and further comprises a mounting plate installed on the base and a pressing protection cylinder arranged on the mounting plate and provided with a containing hole in which the nozzle is placed. In the pressing process, the nozzle is placed in the containing hole of the pressing protection cylinder, the pressing rod drives the pressing head to press down, the connecting part of the nozzle is forced into the connecting cylinder of the nozzle through the pressing head, and the nozzle and the nozzle are connected. The whole pressing process is carried out in the containing hole, the containing hole can effectively limit the deformation of the nozzle, and the safety of the whole pressing process is improved.

The present application relates to the technical field of conductive slip ring processing control, and discloses a multi-station processing intelligent production control system for conductive slip rings, comprising a servo pressure connection device, a multi-temperature zone curing device, an electrical performance testing device, a conveying mechanism, a material carrier and a main control unit. The main control unit collects time sequence mechanical and displacement signals in the pressure connection stage and synthesizes a predicted deformation vector; collects time sequence dielectric coupling impedance signals in the curing stage to determine a gelation characteristic moment and a compensation time window, calculates target temperatures for each temperature zone according to the predicted deformation vector and outputs temperature distribution control instructions; collects time sequence dynamic contact resistance signals in the testing stage and extracts harmonic characteristics, and performs thermal compensation response model identification and parameter correction. Through the present application, a feedforward compensation and closed-loop control mechanism between the pressure connection, curing and testing processes is established, deformation caused by mechanical residual stress is compensated, and contact resistance fluctuation of the finished conductive slip ring is reduced.

The invention provides a crankshaft heat treatment out-of-tolerance control device and a crankshaft heat treatment out-of-tolerance control method, relates to the field of constraint tools, and aims to solve the technical problem of insufficient subsequent machining allowance or direct scrapping caused by difficult-to-control deformation of a crankshaft in the length direction in the vertical hanging heat treatment process at present. The first restraining tool is provided with a restraining hole for the crank arm to stretch in, and is matched with a wedge block for use, so that the trend that the crank arm expands outwards under the action of gravity is limited, the distance between the crank arms is locked in the heat treatment process, and the crank arms are prevented from being lengthened due to self weight; the second constraint tool is provided with a constraint block extending between the crank arms, the constraint block is arranged on the inner sides of the crank arms, and the stress of inward collapse or closing of the crank arms is resisted in the cooling shrinkage process, so that the length of the crankshaft is prevented from being shortened; the first restraining tool and the second restraining tool are inserted into the restraining grooves through the wedge blocks at the wedge-shaped ends to abut against the end face of the crank arm, and the wedge-shaped matching structure solves the problem of tolerance matching between the tools and the roughly machined crankshaft.

The utility model discloses a high -strength corrugated paperboard, including first face paper, the core paper subassembly of glue adhesion in first face paper top and the second face paper of glue adhesion in top, and core paper subassembly includes with first face paper adhesion fixed first core paper layer, with first core paper layer stacking second core paper layer, the lower surface of second core paper layer with first core paper layer adhesion fixed, the upper surface of second core paper layer with second face paper adhesion fixed, first core paper layer is through folding and is in turn staggered distribution first big trapezoidal groove and first small trapezoidal groove, and second core paper layer is through folding and is in turn staggered distribution second small trapezoidal groove and second big trapezoidal groove, this corrugated paperboard can effectively avoid deformation and breakage when improving its compressive strength, impact resistance, durability and stability, and is especially suitable for the packaging demand of needing high strength, stability.

The application discloses a production system of a negative pole post and relates to the technical field of negative pole posts, which comprises a first carrier for supporting a copper sheet, a second carrier for supporting an aluminum post, an acting piece for heating the copper sheet, a driving source for driving the second carrier to move the aluminum post towards the copper sheet, so that the aluminum post and the copper sheet are in contact and are pressed together to form a negative pole post blank, a stamping and straightening composite mechanism for straightening the processed negative pole post blank, a tensile test tool and / or a tear test tool for testing the straightened negative pole post blank. The application integrates the supporting, heating, pressing, straightening and testing processes through the integration of various components, and a complete negative pole post automatic production system is constructed, so that the negative pole post can be produced on a large scale and economically.

This invention relates to a construction method for replacing supports in large, complex, deep foundation pits without partition walls. One side of the support replacement location already has a completed main structure base slab, main structure columns / walls, and main structure floor slabs. Without partition walls, lattice columns and supporting connecting beams are pre-installed. Then, the foundation pit supports can be replaced by installing buttress walls and buttress columns. An automatic servo system is used to compensate for axial force, transferring the axial force of the supports to the buttress walls and buttress columns. Compared with existing technologies, this invention's method for replacing supports in large, complex, deep foundation pits without partition walls eliminates the need for segmented soil retention and excavation during actual construction. It prioritizes the completion of key construction processes for the main structure, significantly shortening the construction period and saving overall project costs.