25results about How to "Improve construction stability" patented technology

The invention relates to the technical field of tunnel engineering monitoring, and particularly discloses a karst water-rich stratum large-diameter shield tunnel intelligent monitoring method which comprises the steps of S1, real-time geological detection, S2, shield attitude and mechanics monitoring, S3, hydrology and seepage monitoring, S4, surrounding rock deformation and stress monitoring and S5, comprehensive early warning and feedback. According to the intelligent monitoring method for the large-diameter shield tunnel in the karst water-rich stratum, accurate early warning and intelligent response of construction safety are achieved through multi-source geological detection, real-time mechanical and attitude monitoring, hydrological seepage monitoring and surrounding rock deformation stress analysis in combination with an AI algorithm, edge calculation and an optical fiber sensor; the tunnel construction efficiency and the long-term operation stability are effectively improved, and the intelligent monitoring method effectively reduces the construction safety problems of water burst, ground surface settlement, shield deviation and the like in the karst water-rich stratum by integrating various real-time monitoring technologies and algorithms.

The invention provides an intersecting shield interval protection construction method, which belongs to the technical field of building construction, and comprises the following steps: firstly, excavating an open cut foundation pit at an intersection, arranging a cast-in-situ bored pile and a crown beam as an enclosure structure in the foundation pit, and arranging a steel support system at the same time. And after the enclosure structure is completed, the foundation pit is excavated to the designed depth, and reinforced concrete supporting piles and pile top beams are constructed. And on the basis, a reinforced concrete protection plate is poured to form a sheet pile structure type protection structure system. And finally, foundation pit filling is completed in a backfilling mode. Before the shield passes through the cross point, a test section is arranged to collect related construction data, and preparation is made for subsequent formal tunneling. And in the actual shield tunneling process, the tunneling speed and the soil bin pressure are controlled, and synchronous grouting is conducted. And after crossing the cross point, arranging closed rings in the front and back areas, and carrying out wall back grouting by adopting double-liquid slurry. And finally, a geological radar is used for detecting the cavity and repairing, and the problem of mutual influence in up-down close-distance crossed tunnel construction is solved.

The invention discloses a construction process for stabilizing foundation pit and slope support soil, and particularly relates to the technical field of slope support construction, which comprises the following specific steps: S1, precise checking of a prefabricated aluminum mold, S2, soil trimming and checking, S3, installation of an adjustable screw rod, S4, detection of the installed aluminum mold, S5, bottom and edge plugging of the aluminum mold, S6, grouting: preparing mortar slurry according to a mortar matching mass ratio, and S5, grouting. S7, removing the mold; and S8, maintaining. According to the method, the standard size and the splicing mode of the aluminum mold are combined, the specific size of the aluminum mold is designed, the number of the needed aluminum mold is determined, it is ensured that the number is sufficient and not excessive, so that cost is optimized, after prefabrication of the aluminum mold is completed, traces and uneven parts left by mechanical finishing are eliminated, operation needs to be conducted strictly according to marking lines during manual finishing, and the production efficiency is improved. And it is ensured that the surface of the trimmed soil body is flat and smooth and basically located on the same plane, accurate and stable construction can be achieved according to specified requirements, and the construction quality is poor.

A road and bridge construction approach slab structure comprises a water tank, a fixed bottom plate, a position control sleeve shell, a gear disc, a fixed supporting leg, a movable supporting sleeve and an approach slab, the two sides of the approach slab are connected with protective plates, the approach slab is connected with the upper end of a fixed vertical rod, the middle of the fixed vertical rod is connected with a reinforcing frame, the lower end of the fixed vertical rod is connected with the fixed bottom plate, the fixed bottom plate is connected with the water tank, and the two sides of the water tank are provided with visual ports. The upper portion of the water tank is provided with a filling pipe, the filling pipe is connected with an upper cover cap through threads, the lower portion of the water tank is provided with a discharging pipe, the discharging pipe is connected with a side cover cap through threads, the upper portion of the fixing bottom plate is provided with a fastening supporting sleeve, the fastening supporting sleeve is connected with a position control sleeve shell, and the lower portion of the position control sleeve shell is provided with a butt joint inserting sleeve which is provided with a butt joint inserting groove. And the butt joint plug bushes are matched with the butt joint slots and are connected with the butt joint slots.

The utility model provides a kind of concrete slab joint sweeper, including support, joint sweeping mechanism and walking wheel, support includes frame body and handrail, joint sweeping mechanism includes driving device and joint sweeping brush, joint sweeping brush is arranged in the center of frame body front end bottom, driving device is arranged on the upper portion of frame body, walking wheel is arranged in the center of frame body rear end bottom, the utility model guarantees the accuracy of joint sweeper, construction quality is better, efficiency is higher, economy is more optimal, convenient time-saving.

The invention relates to the technical field of desert planting, in particular to a desert greening project construction method which comprises the steps that desert soil is loosened, water-retaining agent injection and pH value adjusting operation are sequentially conducted on the desert soil, and vegetation planting is conducted after pit digging is conducted through a pit digging machine; the vegetation is fertilized, a water supply pipeline is established to irrigate the planted vegetation, and the vegetation is regularly maintained and monitored; respectively obtaining the survival number of the vegetation and the total planting number of the vegetation; determining the construction stability of the desert greening project based on the planting survival rate of the vegetation; if the construction stability does not meet the requirement, adjusting the fertilization period of the vegetation, or determining the growth resource supply effectiveness of the vegetation based on the pH value difference quantity of the desert soil at different depths; and if the growth resource supply effectiveness does not meet the requirement, adjusting the injection amount of the water-retaining agent. The construction stability of the desert greening project is improved.

The present application belongs to the technical field of barrier wall construction, and particularly relates to a vertical barrier wall grouting construction equipment for performing grouting operation on the inside of a pile body of a barrier wall, comprising a containing pipe, an outer wall of the containing pipe being in abutment with an inner wall of the pile body, a medium driving cavity being formed in the inside of the containing pipe; a grout outlet pipe, the grout outlet pipe being coaxially sleeved in the medium driving cavity of the containing pipe, the grout outlet pipe being driven by the medium to move axially along the pile body to be ejected or retracted; a grout conveying pipe, the grout conveying pipe being coaxially arranged in the inside of the grout outlet pipe, the grout conveying pipe being in sliding fit with the grout outlet pipe, the grout conveying pipe being rotationally connected with the containing pipe; the present application conveys slurry to the grout outlet pipe through the grout conveying pipe and outputs the slurry outward, the containing pipe drives the grout outlet pipe to reciprocate axially along the pile body by means of the medium driving effect, and a linkage disturbance member generates disturbance, the integrated structure realizes synchronous cooperation of grouting and vibration functions, and can discharge air bubbles in the slurry; and the medium driving ensures that the vibration frequency is uniform and controllable, and guarantees the compactness of the pile body.

The utility model relates to a segment hand hole plugging and template fixing device based on a suspender embedded sleeve. The segment hand hole plugging and formwork fixing device based on the suspender embedded sleeve comprises the embedded sleeve, a suspender and a formwork supporting mechanism. The embedded sleeve is nested at the bottom of a hand hole of a duct piece, internal threads are arranged in the embedded sleeve, the formwork supporting mechanism is mounted at an opening of the hand hole through the hanging rod, one end of the hanging rod is in threaded connection with the embedded sleeve, the other end of the hanging rod is located on the outer side of the formwork supporting mechanism and is in threaded connection with an end nut, and the hanging rod is further sleeved with a middle nut. The middle nut is located in the hand hole. Damage of a traditional drilling fixing mode to the segment structure is avoided, and the construction efficiency and stability are improved; the plugging mechanism is filled with micro-expansive concrete and is combined with a water stop ring, so that the plugging strength and the waterproof performance are effectively improved, the long-term stability of hand hole plugging is ensured, and the construction convenience, the applicability and the waterproof reliability are improved.

The invention provides a progressive angle adjusting device with a spindle inclination angle locking function and a directional drilling machine, the directional drilling machine comprises a drilling machine crawler body, a rear angle adjusting assembly and a front angle adjusting assembly are respectively mounted on two longitudinal sides of the drilling machine crawler body, and a rear inclined strut assembly and a front inclined strut assembly are hinged to the top surface of the drilling machine crawler body; a feeding device is arranged above the drilling machine crawler body, and the feeding device is movably connected with the rear angle adjusting assembly, the rear inclined strut assembly, the front angle adjusting assembly and the front inclined strut assembly; the rear angle adjusting assembly, the front angle adjusting assembly, the rear inclined strut assembly and the front inclined strut assembly jointly form the progressive angle adjusting device with the main shaft inclination angle locking function. Due to the design of the progressive angle adjusting device, it can be guaranteed that the high-power automatic directional drilling machine has small hole opening height and appearance height, and meanwhile posture adjustment of a low-position hole, a large angle and a large height range can be achieved.

The invention is applicable to the technical field of solid waste resource utilization and novel building material preparation, and provides solid waste based lightweight fine-grained ceramsite as well as a preparation method and application thereof, and the ceramsite is prepared from titanium gypsum, iron tailing powder, a solid waste based cementing material, a chelating agent, a nanocrystalline nucleus early strength agent and mixing water according to a specific proportion. The preparation method comprises the following steps: dry mixing of raw materials, preparation of an additive solution, wet mixing, rolling granulation, normal-temperature curing, 60-95 DEG C low-temperature steam curing and drying. According to the invention, the titanium gypsum, the iron tailing powder and other low-value solid wastes are used as main raw materials, and the lightweight fine-grained ceramsite with small particle size, stable structure, low water absorption and low dry density is successfully prepared through an optimized ratio and a unique low-temperature steam curing process. The product can be used as a fine aggregate to be applied to plastering mortar, completely or partially replaces natural gravel, and the mechanical property and construction stability of the mortar are improved while the mortar capacity is reduced.

The utility model provides a corner constructional column template reinforcing device, which belongs to the technical field of building construction, and comprises a bottom support frame, the top wall of the bottom support frame is fixedly connected with telescopic extension columns which are symmetrically distributed, and the top walls of the telescopic extension columns are fixedly connected with a top support frame. Symmetrically-distributed sliding blocks are slidably connected to the inner walls of the bottom supporting frame and the top supporting frame. According to the utility model, through the cooperation of a threaded cone, a strong spring, a pin rod, a pin hole and other parts in the arranged double-limiting assembly, the flexible adjustment and accurate positioning of the angle between the positioning plate A and the positioning plate B are realized, and the device can be tightly attached to and reinforce a template no matter a corner wall body with a right angle or other angles; the reinforcing effect of constructional column formworks at different corners is effectively guaranteed, the construction quality and stability are improved, and the problems that in the prior art, different corners are difficult to accurately adapt, consequently, the formworks are not tightly attached to the wall, and the reinforcing effect is poor are solved.

The invention discloses a retaining wall construction device and method, and particularly relates to the technical field of retaining wall construction. The retaining wall construction device comprises a fixing frame, a supporting frame, an embedded electric cylinder and a bidirectional embedded reinforcing mechanism; the two-way embedded reinforcing mechanism comprises a connecting beam, two supporting beams, an inserting plate, a plurality of vertical inserting groove plates, inserting strips, a plurality of transverse groove boxes and transverse strips. The device further comprises an embedding and fixing mechanism and a reinforcing and pre-embedding mechanism. According to the two-way embedded reinforcing mechanism, after concrete slurry in a plurality of transverse groove boxes and a plurality of vertical inserting groove plates is solidified, transverse and vertical construction reinforcement can be achieved in the retaining wall, the concrete slurry can be fully embedded into the retaining wall body, and therefore in the construction process of the retaining wall, the construction efficiency is greatly improved. Therefore, the problem that the construction stability of the retaining wall is greatly reduced in the construction process of the retaining wall due to the fact that the retaining wall is difficult to be fully embedded into the retaining wall body is solved.

This invention provides a prefabricated continuous free-form glulam ceiling system and its construction method. The system includes a main structural steel beam, steel column flanges, free-form glulam main panels, dovetail joints, and concealed F-shaped metal connectors. The glulam main panels undergo rough back processing, node processing, front rough processing, and front precision processing in the factory using industrial robots, achieving integrated high-precision manufacturing of the free-form shape and assembly nodes. Adjacent glulam components are connected by customized dovetail joints. The glulam main panels are prefabricated and connected to the main structural steel beams via concealed F-shaped metal connectors, and are not exposed after installation. The ceiling modules are assembled and glued in the factory, and then installed on-site by hoisting as a whole and bolting to the steel column flanges, thus achieving a prefabricated construction mode with a high prefabrication rate and low on-site dependence.

This application provides a method for seepage prevention and reinforcement of soil around a tunnel, belonging to the field of grouting materials and soil and rock reinforcement technology. The method for seepage prevention and reinforcement of soil around a tunnel includes the following steps: (1) conducting geological exploration of the soil around the tunnel to identify and divide different levels of weak seepage areas; (2) arranging anode electrodes, auxiliary electrodes and cathode electrodes in an alternating manner along the tunnel circumference through secondary grouting holes; (3) arranging independent calcium source pipes and carbon source pipes along the tunnel axis, wherein the calcium source pipes and carbon source pipes are provided with openings; (4) releasing calcium source solution and carbon source solution into the soil around the tunnel through the calcium source pipes and carbon source pipes, while applying control voltage and current to the anode electrode, auxiliary electrode and cathode electrode to drive ions in the calcium source solution and carbon source solution to migrate directionally under the action of electric field and react in the weak seepage area to generate cement, thereby achieving soil reinforcement and seepage prevention; (5) detecting the reinforcement effect.

The rock breaking pipe jacking machine and the construction method thereof, which comprise a supporting base, a supporting mechanism fixedly arranged at the top end of the supporting base, a jacking mechanism slidingly arranged at the top end of the supporting mechanism, an adjusting mechanism installed on the inner wall of the jacking mechanism, and an unfolding mechanism fixedly arranged at the outer side of the adjusting mechanism. Through the mutual cooperation between the servo motor and the transmission screw rod and the moving guide block, the moving guide block can move close to or away from each other through the rotation of the transmission screw rod. The device can unfold the counterforce mechanism from the pipe jacking machine main body through the unfolding mechanism, and provide counterforce support for the hydraulic output rod without additional installation of the back wall, effectively solving the technical problem that the pipe jacking operation cannot be smoothly carried out due to the narrow space of the working well and the inability to install the back wall.

The invention provides a large-section tunnel supporting structure of a deep sandy gravel covering layer and an excavation method, and relates to the technical field of building construction.The large-section tunnel supporting structure of the deep sandy gravel covering layer comprises a mountain advanced reinforcing module, a high-pressure spraying reinforcing body and a grouting reinforcing body, the high-spraying reinforcing bodies are vertically arranged outside the side lines of the two sides of the large-section cavern respectively, and the multiple grouting reinforcing bodies are vertically and evenly distributed in an excavation area of the large-section cavern; the indoor support module comprises a top arch opposite-penetrating anchor cable, a side wall opposite-penetrating anchor cable and an advance support body; the forepoling body is arranged on the top arch portion of the large-section cavern in the tunneling direction of the large-section cavern and used for reinforcing the top arch portion of the large-section cavern in advance before the large-section cavern is excavated. Compared with the prior art, the problems that collapse and roof collapse are likely to happen to the excavation face in the construction process can be solved.

This utility model discloses an adjustable support device for reinforcing the load-bearing components of an integrated platform, comprising support columns, a load-bearing beam, circumferential positioning clamps, detachable temporary connectors, and high-strength tie rods. Two support columns are provided, one on the left and one on the right. The two ends of the load-bearing beam are respectively connected to the upper part of the support columns. The circumferential positioning clamps include a left positioning clamp and a right positioning clamp, which are used to clamp the load-bearing components mounted on the load-bearing beam. The detachable temporary connectors are installed on the top of the load-bearing components, serving as temporary reinforcement supports. This device achieves three-dimensional coordinated positioning in the vertical, circumferential, and radial directions, improving construction efficiency. It is particularly suitable for scenarios with stringent safety requirements, such as nuclear power plants, and solves the defects of traditional processes, such as large positioning deviations, cumbersome reinforcement, and easy swaying of load-bearing components.

The application relates to a power cable convenient traction storage supporting device which comprises a base, a storage structure and a traction structure. The traction structure and the storage structure are sequentially installed on the base along the cable storage direction. Two traction structures are symmetrically arranged on the base and enclose a traction channel convenient for the cable to pass through, and the cable is moved to the storage structure direction by the two traction structures. The device relies on the base to realize overall bearing and on-site layout. The cable sequentially passes through a first limiting structure, the traction structure, a second limiting structure, the storage structure and a storage guide structure along the operation direction. Through the cooperation of the structures, the automatic limiting and guiding, self-adaptive traction and regular storage of the cable are completed.

The present invention discloses a multiple high-pressure adaptive micro-disturbance rotary jet drilling tool, which belongs to the technical field of rotary jet grouting. The multiple high-pressure adaptive micro-disturbance rotary jet drilling tool of the present invention includes a rotary jet diverter, a rotary jet drill rod, a vacuum suction device and a drill bit. It creatively adopts a multi-channel high-pressure rotary jet diverter, and cooperates with the rotary jet drill rod to realize high-pressure jetting at multiple levels, which increases the construction efficiency by many times and improves the pile quality; each level injection point is a high-pressure gas and high-pressure polymer dual-channel nozzle, which protects the high-pressure strength of the high-pressure polymer jet and cuts the soil more effectively. In addition, the vacuum suction device is creatively adopted, and no manual intervention is required during the entire rotary jetting process, which avoids quality problems caused by manual operation errors, and the construction operation is simpler and more convenient; at the same time, the wireless pressure sensor at the bottom can transmit the pressure in the underground hole to the mechanical equipment operating platform in real time, and can dynamically adjust the pressure in the hole; it no longer relies on imported MJS equipment, which greatly reduces the construction cost of micro-disturbance rotary jet grouting.

The utility model relates to the technical field of suspended ceilings, in particular to a novel double eyelid suspended ceiling assembly which comprises a first installation hanging plate, a second installation hanging plate is arranged at the bottom of the first installation hanging plate, and the first installation hanging plate and the second installation hanging plate are connected in a sliding mode through a plurality of connecting mechanisms. The connecting mechanism can freely adjust the distance between the first mounting hanger plate and the second mounting hanger plate, and the left end of the first mounting hanger plate is fixedly connected with a plurality of inserting mounting pipes. By moving one mounting hanger plate, driving the pressurizing nut and the sliding block to move in the sliding channel and rotating the pressurizing nut after the mounting hanger plate is in place, extrusion force on a connecting part is enhanced, the two hanger plates are reinforced, construction efficiency and stability are improved, complicated tools and cumbersome steps are not needed in the adjusting mode, the construction efficiency is greatly improved, and the construction cost is reduced. And meanwhile, the stability and reliability of the suspended ceiling assembly after installation are guaranteed, and use is very convenient.

The invention belongs to the technical field of data processing and intelligent control, and provides an underwater construction method for a highway bridge, which specifically comprises the following steps of: arranging a settlement data sensor group at the bottom of a caisson, acquiring settlement data in real time through the settlement data sensor group, calculating a settlement uniformity factor according to the acquired settlement data, and calculating the settlement uniformity factor according to the settlement uniformity factor; and finally, the current settlement state of the caisson is judged based on the settlement uniformity factor, and differential grouting control is conducted according to the settlement state. According to the method, the occurrence risk of inclination or rotation of the caisson in the caisson process caused by the difference of the compaction degree of silt in a large caisson construction scene is effectively quantified, the relative collapsing position in the whole caisson can be accurately marked, and the occurrence of local excessive settlement or inclination risk caused by uneven supporting force is effectively reduced. The timeliness and timeliness of settlement risk identification are improved, the active adjustment frequency of human participation is reduced, the construction quality and efficiency are greatly improved, and settlement fluctuation caused by estuary region characteristics is effectively dealt with.

The application relates to the technical field of municipal drainage construction, and discloses a kind of installation construction method of integrated lifting pump station under complex environment, comprising the following steps: S1, construction control network is established in the area to be installed, including control pile, review survey point and construction leveling point, to determine the center position of pump station shaft, the installation orientation of water inlet and outlet and hoisting reference line, so that the subsequent work shaft construction, pump station hoisting, pipeline connection and backfilling retest all adopt the same coordinate reference; the application combines reverse work shaft, directional lowering, attitude correction, pipe connection limiting, zoned backfilling and acceptance closed loop into continuous construction control chain, so that pump station installation no longer only relies on hoisting experience and manual observation, but forms a measurable, correctable and reviewable construction method, which has small disturbance to surrounding soil, small environmental impact, does not need large-scale slope, has small space occupation, can reduce earthwork excavation amount, has strong environmental adaptability, is safe and reliable, and has good construction quality effect.

The application discloses a pipeline transportation platform for fluidized solidified soil, an operation method and a quantitative evaluation method for mixing uniformity, and raw material supply and pipeline transportation systems include a slurry pump, a centrifugal pump, a main conveying pipeline, a secondary conveying pipeline, a mortar mixing pool and a pump control hub; a proportioning control system is arranged at the mortar mixing pool, and the proportioning control system is used for controlling proportioning parameters of a solidifying agent powder; an online detection system is used for detecting viscosity, flow, temperature and pressure data of sludge in the main conveying pipeline in real time; and a data acquisition system is used for analyzing data fed back by the online detection system and issuing operation instructions for valves and the pump control hub, the proportioning control system of the raw material supply and pipeline transportation system. The application can effectively prevent pipeline blockage caused by solidification of fluidized solidified soil at the bottom of the pipeline, can reduce pipeline pumping energy consumption, and ensures long-distance pipeline transportation of sludge.

The application discloses a core concrete pouring operation platform based on a large-cantilever cover beam U-shaped thin-wall shell, and aims at solving the problem of operation difficulty in core concrete pouring of the U-shaped thin-wall shell. The application comprises a steel bracket installed on the top of the cover beam shell body, the upper part of the steel bracket is provided with an operation platform, the steel bracket comprises longitudinal steel supports symmetrically arranged on the two sides of the U-shaped shell body, multiple transverse steel supports are arranged along the length direction of the cover beam shell body, and the multiple transverse steel supports are cross-sectioned with multiple angle steel support frames in the inside of the cover beam shell body. The operation platform is suitable for core concrete pouring operation of a large-cantilever prefabricated thin-wall cover beam formwork, has the advantages of convenient installation and removal, stability and reliability, and greatly simplifies the high-altitude operation link through optimization of the construction process, thereby improving the construction efficiency and operation safety.

The invention provides a deep well crawler belt electric drive drilling machine and a transportation method, the drilling machine comprises a crawler belt walking mechanism which comprises a crawler belt walking unit and a chassis bracket, and two containing grooves are concavely formed in the chassis bracket; the frame platform comprises a platform body and two chassis cross beams, and the two chassis cross beams are correspondingly arranged in the two containing grooves respectively; the four supporting leg assemblies are correspondingly arranged on the frame platform, each supporting leg assembly comprises a transverse telescopic arm and a vertical telescopic supporting leg connected with the telescopic end of the transverse telescopic arm, and the end, away from the telescopic end, of the transverse telescopic arm is connected with the frame platform; the power module comprises a motor and a diesel engine, and the diesel engine is electrically connected with a walking hydraulic pump of the crawler walking mechanism and further electrically connected with a hydraulic main pump of the whole machine hydraulic system; the motor is electrically connected with the hydraulic main pump; the drilling mast mechanism is arranged on the frame platform and is used for executing drilling and drilling operations; the height and the width of the whole machine meet the transportation requirements, and the plate trailer can be safely and simply transported up and down.