208results about How to "Reduce construction procedures" patented technology

The utility model relates to a vertical connection node structure of a partially coated steel-concrete combination column, which is characterized in that a horizontal partition plate is preset at the bottom of an upper column, the horizontal partition plate is welded with the column in a factory, an upper column web plate can be reserved or cut off in a connection area, and a longitudinal steel bar and a vertical stiffening plate are welded on two sides of the horizontal partition plate of the upper column; it is guaranteed that the centers of the vertical stiffening plates and the centers of the longitudinal steel bars are aligned or deviated within a controllable range; when the upper column and the lower column are spliced on the construction site, only the flanges of the upper column and the lower column need to be welded in a butt joint mode, and the vertical stiffening plate of the upper column and the top partition plate of the lower column are welded. The thickness of the horizontal partition plate and the thickness of the vertical stiffening plate are designed and calculated, the reliability of force transmission of the horizontal partition plate and the thickness of the vertical stiffening plate are verified, and two connecting structures of a grouting-free joint and a grouting formwork-free joint can be achieved. Compared with the prior art, on-site construction procedures can be reduced, and construction efficiency can be improved.

The utility model provides a prefabricated hanging plate for pouring type asphalt concrete, and relates to the technical field of reservoir danger removing and reinforcing engineering, the prefabricated hanging plate comprises a concrete plate and structural steel bars arranged on the concrete plate, the structural steel bars are arranged on the concrete plate, and the dam body connecting ends of the structural steel bars extend out of the concrete plate to be connected with a reservoir dam body; the concrete slabs are fixedly assembled through the structural steel bars so that casting gaps can be formed between the concrete slabs and the reservoir dam body, the multiple concrete slabs are fixedly assembled through the structural steel bars to form a wall plate matched with the upstream face of the reservoir dam body, the multiple casting gaps between the wall plate and the reservoir dam body form an asphalt concrete pouring area, and asphalt concrete is poured into the asphalt concrete pouring area. Therefore, construction procedures are reduced, construction efficiency is improved, and construction cost is saved. And the concrete prefabricated hanging plate and the poured asphalt concrete are combined into a whole, so that the anti-seepage and reinforcing effects are improved, and various objects in the reservoir are also prevented from directly damaging the asphalt concrete anti-seepage layer.

The invention relates to the technical field of cable processing, in particular to a conductor strand stranding device capable of achieving one-time stranding and a using method of the conductor strand stranding device. A fixed shaft is fixedly connected to the upper side of the underframe; the rear side of the fixing shaft is rotationally connected with a fixing disc. A motor is arranged on the bottom frame, and the output end of the motor is connected with the fixing disc. And a plurality of wire rollers are rotationally connected to the fixed disc. According to the invention, the coating is covered in the process of stranding the stranded wire, no extra equipment is needed to coat the stranded wire with the protective layer, the subsequent construction procedures are reduced, the extra cost is avoided, and the coating of the protective layer is completely covered on the wire core through the spraying pipe, so that the production efficiency is improved. The protection effect of the protection layer on the stranded wire is improved, and hot air is blown to the surface of the wire core to accelerate drying of the protection layer coating on the surface of the wire core, so that the protection layer coating is firmly attached to the wire core, and the protection layer coating on the surface of the wire core is prevented from being easily scraped off by the backing plate.

The invention relates to the technical field of fabricated buildings, in particular to a prefabricated wallboard component, a preparation method and a construction method, and the prefabricated wallboard component comprises a light wallboard and a concrete frame which surrounds the light wallboard, is attached to the edge of the light wallboard and is connected with the light wallboard; the light wallboard is formed by splicing at least two light battens; the concrete frame comprises two constructional columns located on the left side and the right side of the light wallboard and two ring beams located on the upper side and the lower side of the light wallboard, the positions, corresponding to the constructional columns, of the light wallboard are connected with the constructional columns through first connecting pieces, and the positions, corresponding to the ring beams, of the light wallboard are connected with the ring beams through second connecting pieces. The concrete frame and the batten are integrally prefabricated in a factory, so that the wallboard component is better in integrality, one wall body only needs to be mounted once, the problems that an existing light batten needs to be spliced for multiple times, and the mounting efficiency is low are solved, and construction procedures are reduced. Meanwhile, the number of the battens and the width of the constructional column can be adjusted according to design requirements, and material waste caused by cutting is avoided.

The utility model discloses a tool for controlling the elevation of an induction plate of a linear motor, which comprises a cross beam and a measuring assembly, and a first positioning assembly and a second positioning assembly are respectively arranged at two ends of the cross beam, the measuring assembly comprises a sliding seat which is slidably installed on the cross beam and is used for measuring the transverse distance of the measuring points of the induction plate, and a caliper which is installed on the sliding seat and is used for measuring the vertical distance of the measuring points of the induction plate. Through the positioning assemblies arranged on the two sides of the cross beam and the measuring assembly moving on the cross beam, measurement of the transverse distance and the longitudinal distance of the measuring points of the induction plate is achieved, the high-precision requirement for height installation of the induction plate is met, the elevation control precision in the installation process of the induction plate is improved, the construction quality is improved, and the risk of construction rectification is reduced.

A mechanical intelligent pipeline plugging device comprises an anchoring plugging unit and a pipe cleaning unit, the anchoring plugging unit and the pipe cleaning unit are connected through a universal joint, the anchoring plugging unit comprises a front rolling wheel mechanism, a rear rolling wheel mechanism, a plugging mechanism, an anchoring mechanism and a speed reducer, and the anchoring mechanism is composed of a plurality of anchoring slips. The anchoring slips are evenly distributed on the periphery of the central axis of the anchoring plugging unit, the plugging mechanism is composed of a pressing disc, a rubber cup, a movable cone, a T-shaped sliding block, a fixed disc and a lead screw, the front end and the rear end of the pipe cleaning unit are provided with a cup assembly and an anti-collision head respectively, and a positioning tracking device is installed in the pipe cleaning unit. The problem that sealing is not tight due to pipeline ovality or welding seams can be effectively solved, the construction procedure of a lower air bag hole can be omitted through the double sealing leather cups, construction cost is reduced, construction safety is improved, safe and reliable zero-leakage plugging is achieved, and the double-sealing leather cup has the advantages of being reasonable in design, safe, reliable and reliable in sealing.

The utility model relates to an air tightness and waterproof reinforcing structure for an ultra-low energy consumption building formwork-removal-free outer wall through-wall pipeline, which comprises a through-wall sleeve and an inverted conical silica gel sleeve, the through-wall sleeve penetrates through a wall body, the size of a pipe hole of the through-wall sleeve is matched with the outer diameter of the pipeline, and the inverted conical silica gel sleeve is arranged in the through-wall sleeve. Two ends of the wall bushing are respectively provided with an inverted conical silica gel sleeve, each inverted conical silica gel sleeve is provided with an inner hole, the pipeline is arranged in the wall bushing in a penetrating manner, and two sides of the pipeline are limited by the inverted conical silica gel sleeves to form a high-inside low-outside direction from inside to outside from a wall body. The utility model has the advantages that the airtight type, the heat preservation property and the waterproof property between the pipeline and the wall bushing can meet the technical requirements, and meanwhile, the pipeline can adapt to the influence of more external factors; the method has a reliable prevention and treatment effect, ensures that the through-wall pipeline is free of air leakage and leakage, and is good in heat preservation, high in deformation resistance, few in construction procedures, convenient to construct, good in quality and capable of saving manpower and material resources.

The invention relates to the field of anti-seismic building structures, in particular to a self-resetting inorganic glue composite bamboo-profile steel combined section anti-seismic column and a manufacturing method thereof.The self-resetting inorganic glue composite bamboo-profile steel combined section anti-seismic column comprises inorganic glue composite bamboos, profile steel, anchor bolts, sticky steel glue, steel strands and anchorage devices; the inorganic glue composite bamboos are symmetrically cut along the centroid of the column section, and slots and composite bamboo round holes are formed in the side surfaces of the inorganic glue composite bamboos in the length direction of the inorganic glue composite bamboos; the anchor bolts are uniformly welded on a web plate of the profile steel at set intervals; the web is inserted into the inserting groove, the anchor bolt is inserted into the composite bamboo round hole, and the contact face of the profile steel and the inorganic glue composite bamboo and the contact face of the anchor bolt and the inorganic glue composite bamboo are both pasted through steel pasting glue. The steel strand penetrates through a hole in the middle of the profile steel and is anchored through an anchorage device after pretension force is applied to the steel strand.

The invention discloses a method for improving the bending and shearing resistance of a height difference beam through CFRP cloth. The method comprises the steps that a to-be-reinforced position is determined; performing surface treatment; repairing and leveling; pasting the carbon fiber cloth; the surface of the to-be-reinforced area is coated with an interface agent; the method comprises the following steps: uniformly smearing a structural adhesive in a to-be-reinforced area at the top of a structural beam, and adhering carbon fiber cloth to the surface of the to-be-reinforced area; inverted-cone-shaped first chemical anchor bolts and inverted-cone-shaped second chemical anchor bolts are driven into the first chemical anchor bolt holes and the second chemical anchor bolt holes correspondingly; steel plate pressing strips I and II are adhered to the surfaces of the chemical anchor bolts I and II by using structural adhesive; seventhly, the high-angle end and the low-angle end of the structural beam are reinforced; a third inverted-cone-shaped chemical anchor bolt and a fourth inverted-cone-shaped chemical anchor bolt are hit into the third chemical anchor bolt hole and the fourth chemical anchor bolt hole correspondingly; inverted-cone-shaped chemical anchor bolts V and VI are driven into the positions of the chemical anchor bolt holes V and VI respectively; the L-shaped angle steel I and the L-shaped angle steel II which are matched with each other in size are respectively adhered to the outer sides of the high-angle end and the low-angle end by using structural adhesive. According to the method, the bending resistance and the shearing resistance of the height difference beam can be improved at the same time.

The invention relates to the technical field of gypsum, and discloses a slope protection material based on building beta gypsum as well as a preparation method and a construction method thereof, the slope protection material comprises 40-55 parts of building beta gypsum, 8-15 parts of phosphogypsum, 2-5 parts of a curing agent, 10-20 parts of fly ash and 40-60 parts of water; the curing agent comprises calcium hydroxide, potassium carbonate, acrylic resin and calcium carbonate. After the slope protection material provided by the invention is cured, the leachate of the slope protection material reaches the first-grade discharge water standard through a vibroflotation water method. The innovation ensures the environmental protection property of the material in the application process, solves the problem of low water stability of the traditional beta gypsum, increases the water softening coefficient of the building beta gypsum to 0.7, solves the influence on the environment in the treatment process, and meets the requirements of green construction and sustainable development.

The invention relates to the technical field of inorganic fiber spraying materials, in particular to a biodegradable inorganic fiber spraying thermal insulation material and a preparation method and spraying method thereof, spraying equipment and a ship component. The biodegradable inorganic fiber spraying thermal insulation material comprises a component A, a component B and a component C, the component A comprises the following components in parts by weight: 8-12 parts of polyvinyl alcohol, 0.5-1 part of a silane coupling agent, 0.1-0.3 part of a mildew preventive and 80-90 parts of water; the component B comprises the following components in parts by weight: 5-15 parts of sodium borate, 5-15 parts of glycerol and 70-90 parts of water; the component C comprises bio-soluble refractory fibers. The biodegradable inorganic fiber spraying thermal insulation material provided by the invention has the characteristics of reducing construction procedures and reducing the influence on human health, and a refractory fiber thermal insulation layer formed by the biodegradable inorganic fiber spraying thermal insulation material has excellent fireproof performance and can meet the requirements of A-level fireproof separation in the third part of the international fire resistance test program application rules in 2010 published by the International Maritime Organization.

The utility model discloses a module single-side superposed wall structure and a module structure. The module single-side superposed wall structure comprises a single-side superposed shear wall; the single-side laminated external wall panel is arranged on one side of the single-side laminated shear wall; a connecting position is reserved on the single-side overlapped external wall panel, the connecting position is suitable for installing a tie piece, the single-side overlapped shear wall comprises a shear wall panel and a steel bar structure, vertical rib structures are arranged on the shear wall panel, and the steel bar structure is arranged between the adjacent rib structures. According to the invention, by pre-embedding the tie piece for tie in the unilateral superposed external wall panel, the purpose that the wall formwork is subjected to holing-free opposite-pull, no pouring opposite-pull hole is formed, the integration level of internal installation and electromechanical factories is higher, and the integrity of internal decoration of the modules is ensured can be achieved; the internal shear wall is arranged to be a ribbed wall formwork, and the left module and the right module are connected through a rib structure, a steel bar structure and cast-in-place concrete; the concrete pouring formwork expanding force can be resisted without opposite pulling, the adjacent module overlapping shear wall plates are poured without opposite pulling, reinforcement cages are integrated in a factory, the construction procedures are greatly reduced, and the construction efficiency is higher.

The invention discloses a construction method of a green building, which belongs to the technical field of buildings, and comprises the following steps: S1, building components are prefabricated and assembled, a prefabricated box building is adopted, each module is prefabricated and transported to a site, and then the prefabricated modules are hoisted and assembled; s2, passive energy-saving design is carried out, building layout and orientation are designed, illumination is guaranteed, ventilation design is adopted, and a heat preservation and insulation structure is arranged; s3, active energy-saving design is conducted, solar energy, wind energy and rainwater are utilized, and a solar photovoltaic panel, a wind power generation pile and a rainwater collecting device are arranged; and S4, the intelligent building management system BMS is matched with the renewable energy system, and the energy consumption equipment is accurately controlled. The whole building is modularized, on-site wet operation is not needed, construction procedures are reduced, the construction period is shortened, the cost is low, the influence on the environment is small, solar energy, wind energy and rainwater are utilized, resources are saved, and the resource use efficiency is optimized through BMS management and control.

The present invention provides a prefabricated lifting steel bar frame, which belongs to the technical field of railway construction. It includes a chassis bracket, a top plate hanger, and a hanger for connecting the top plate hanger and the chassis bracket up and down into a whole: the chassis bracket includes a frame body I composed of longitudinal beams and transverse beams, an inner mold support beam parallel to the longitudinal beams of the frame body I, an outer mold support beam located outside the transverse outer frame, oblique supports distributed in the frame body I, and a lifting point I and a running pulley located at the overlap of the longitudinal and transverse beams; the top plate hanger includes a frame body II composed of longitudinal beams and transverse beams, oblique supports distributed in the frame body II, and a lifting point II located at the overlap of the longitudinal and transverse beams corresponding to the lifting point I, and a lifting lug is also provided on the transverse beam. The prefabricated lifting steel bar frame of the present invention can directly lift the prefabricated steel bar frame to the working pit for one-time pouring of concrete, which increases safety, saves construction period, and effectively reduces construction costs.

The application provides a foundation pit supporting structure of deep silt stratum and a construction method thereof. The foundation pit supporting structure comprises cast-in-situ bored piles arranged in rows and a water stop curtain. The water stop curtain comprises a plurality of rotary jet piles located in the silt layer and the upper stratum thereof and a plurality of swing jet piles located in the lower stratum of the silt layer. The cast-in-situ bored piles are constructed by using rotary drilling machines; adjacent rotary jet piles are overlapped and engaged with each other; adjacent swing jet piles are overlapped and engaged with each other; and adjacent cast-in-situ bored piles are not engaged with each other. The application combines the construction of the water stop curtain and the cast-in-situ bored piles, firstly constructs the rotary jet piles of the water stop curtain, overlaps and engages the rotary jet piles with each other, then constructs the cast-in-situ bored piles by using rotary drilling machines in the rotary jet piles, the diameter of the rotary jet piles is larger than that of the cast-in-situ bored piles, the former serves as the water stop curtain and also serves as the temporary casing during the construction of the latter, one pile has two uses, the construction process is reduced, the engineering cost is lowered, and the application has good popularization value.

The utility model relates to a steel structure fixing structure on a concrete waterproof coiled material, which is characterized in that a steel plate is arranged above a waterproof coiled material layer, an anchor bolt penetrates through a vertical first anchoring hole corresponding to the waterproof coiled material layer and a concrete structural plate, and a waterproof coating layer is arranged between the anchor bolt and the first anchoring hole of the waterproof coiled material layer; the anchor bolt, the waterproof roll layer and the waterproof coating layer jointly form a waterproof closed loop layer, so that water leakage is basically avoided; the bottom face of the steel stand column is welded to the upper portion of the steel plate, the steel plate is fixed to the concrete structural plate of the top plate through the anchor bolts and the nuts, then the basement top plate can be used for supporting the stand column, the stress area is large, and the stress effect is better; the protective layer is arranged to cover the waterproof roll layer, the steel plate, the upper ends of the anchor bolts and the nuts, so that the ground is not interfered; due to the fact that the steel plate anchor bolts and the nuts are constructed along with the basement top plate, independent foundations do not need to be additionally arranged, construction procedures are fewer, and the period is shorter.

The utility model belongs to the technical field of assembly type buildings, and particularly relates to an assembly type concrete member which comprises two wall members and a connecting member, mounting grooves are formed in the two sides of the connecting member, and protruding parts are arranged on the end faces of the wall members. The wall component is connected with the connecting component in a clamped mode through cooperation of the protruding part and one of the mounting grooves, and a double-end fastening bolt is arranged at the position, on the connecting component, of the joint of the protruding part and the mounting groove in a penetrating mode. According to the utility model, the connecting member is arranged between the wall body members, so that the stability of the wall body members can be improved, and the wall body members and the connecting member are connected in a matching way by adopting the convex parts and the mounting grooves, so that the front surfaces of the wall body members and the connecting member are conveniently fixed by utilizing double-end fastening bolts, the connecting strength of the wall body members and the connecting member is improved, and the demolding phenomenon is prevented; and meanwhile, construction procedures can be reduced, assembly and application of the two are facilitated, and working efficiency is improved.

The invention relates to a pressure conversion device, in particular to a self-liquid-filling ball injection pressure conversion device for perforation, a perforation device and a perforation process, and aims to ensure communication between a pipe column and an annulus in a well before perforation on the premise of not increasing construction procedures. In order to solve the problems of how to realize circulating well killing to stop blowout and how to prevent perforation liquid from being scattered to the ground of a well mouth to cause pollution during recovery if problems occur in the well before perforation, the self-liquid-filling ball-throwing pressure conversion device for perforation establishes a passage for communicating the inside and the outside of a shell through a conical hole and a communicating hole; when the well is tripped into the well, the passage ensures the communication with the annulus in the well, and if problems occur in the well, circulating well killing can be realized through the passage; and during pressure detonation, the annulus in the well can be isolated through matching of the plugging ball and the conical hole, pressure is transmitted to the pressure tapping exploder through the pressure transmitting hole to complete detonation, and the through hole in the pressure tapping exploder is communicated with the annulus in the well after detonation.

The utility model relates to the technical field of rail traffic engineering, in particular to a comprehensive grounding structure of a city railway ballast bed, which comprises a longitudinal grounding steel bar, a transverse grounding steel bar and a comprehensive grounding steel bar mesh, the comprehensive grounding reinforcing mesh is embedded in the bottom of each roadbed slab, and the comprehensive grounding reinforcing meshes at intervals are communicated through grounding reinforcing steel bars every other roadbed slab; a plurality of roadbed slabs are used as a grounding unit at a certain distance, the grounding units are not communicated with one another, the roadbed slabs in one grounding unit are communicated with one another through connecting terminals, and the connecting terminals are connected with weak current side reserved terminals on the roadbed slabs. The utility model has the advantages that the rail structure height of the urban railway shield tunnel is reduced, the concrete consumption is reduced, the construction procedures are reduced, and the comprehensive grounding method is simplified; and the method has good economical efficiency.

The utility model discloses a permanent underground water drainage plugging anti-seepage structure which comprises a drainage pipe, a drainage pipe, a first sealing plate, a first water stop ring and a water pump. The bottom of the drainage pipe is in sealed connection with the first sealing plate, the drainage pipe is pre-buried in the bottom plate and the permeable layer below the bottom plate, the top surface of the drainage pipe is flush with the top surface of the bottom plate, and the bottom surface of the drainage pipe is flush with the bottom surface of the permeable layer; one end of each drainage pipe is communicated with the drainage pipe, and the drainage pipes are all arranged in the permeable layer, so that the permeable layer is communicated with the drainage pipe through the drainage pipes; the first water stop ring is circumferentially arranged on the outer wall of the drainage pipe in a surrounding mode and located above the drainage pipe, so that the drainage pipe and the bottom plate are connected into a permanent integrated structure in a sealed mode through the first water stop ring, and the water pump is arranged in the drainage pipe. The utility model relates to the technical field of underground engineering, and can solve the problems of long construction time, more working procedures and high cost of a drainage mode in underground structure construction in the prior art.

The utility model discloses a kind of anchor jaw formula open hole lateral drilling whip-lay, it includes the guide inclined surface of being equipped with guide inclined body, guide inclined body is connected with central rod, the lower part of central rod is sequentially connected with the center tube equipped with anchor jaw retraction mechanism and the guide shoe equipped with ball-throwing press mechanism in proper order;Anchor jaw retraction mechanism is mainly composed of anchor jaw and piston, anchor jaw installed in center tube is connected with connecting pin through connecting rod installed in piston, piston and limit ring are installed in the outer sleeve connected with center tube;Ball seat is provided in ball-throwing press mechanism, and the sealed ball is seated on ball seat. The whip-lay in the utility model greatly improves the vertical anchoring force to open hole well wall. In open hole lateral drilling construction, the construction mode of cement plug as vertical support is avoided, and the whip-lay is directly used for lateral drilling, and the construction efficiency of open hole lateral drilling well and multi-lateral drilling well can be greatly improved.

The invention discloses underground excavation tunnel mechanical advance middle pipe shed construction equipment and method.The underground excavation tunnel mechanical advance middle pipe shed construction equipment comprises a supporting base, a mechanical arm is arranged on the supporting base, a drill bit mounting piece is arranged at the movable tail end of the mechanical arm, and a plurality of drill bit connecting parts used for mounting drill bits are arranged on the drill bit mounting piece; and the drill bit connecting part is detachably connected with the drill bit and is used for forming a preset drill bit layout on the drill bit mounting piece so as to adapt to different tunnel faces. Manual construction is replaced by mechanical construction, the danger of workers in the construction process is reduced, construction procedures are reduced, steel arches and the like do not need to be arranged, the construction cost is reduced, and meanwhile the construction efficiency is improved. In addition, due to mechanical construction, the construction accuracy is improved, the construction accuracy is more consistent with the design specification, and the construction quality is improved. The drill bit installation part is installed on the front portion of the mechanical arm, drill bits of different models can be installed according to different working conditions, the installation positions of the drill bits can be flexibly adjusted, and the construction efficiency is greatly improved.

This application discloses a jacking support construction device and method for rapid replacement of bridge bearings, comprising: a jacking support mechanism, a base, a base plate, and a self-locking mechanism; the jacking support mechanism integrates a hydraulic jacking structure and a mechanical support structure, the hydraulic jacking structure being used to jack the box girder, and the mechanical support structure being used to support the box girder; the hydraulic jacking structure includes a hydraulic cylinder and a piston rod fitted inside the cylinder, the cylinder having inlet and outlet ports for connecting to a hydraulic station via hydraulic oil pipes; the self-locking mechanism consists of a hydraulic self-locking component and a mechanical self-locking component, the hydraulic self-locking component being located within the hydraulic jacking structure to lock the inlet and outlet ports, and the mechanical self-locking component being located within the mechanical support structure to lock the mechanical support structure; the jacking support mechanism is mounted on the base plate via the base, the base plate being fixedly placed on the support platform; the base and the base plate are provided with an adjustment mechanism for adjusting the position of the jacking support mechanism. This device eliminates the need to transport and stack support components, reducing construction steps and improving efficiency.

The present application belongs to the field of building construction technology, and relates to a window sill construction method and a prefabricated part for a reconstruction project, comprising an original wall, a plurality of prefabricated blocks and a mortar leveling layer, the original wall and the plurality of prefabricated blocks are provided with the mortar leveling layer, the prefabricated blocks are fixed by high-strength self-leveling grouting, the original wall passes through the plurality of prefabricated blocks through a reinforcing bar connecting piece, and the original wall and the plurality of prefabricated blocks are provided with a waterproof layer outside. The combination scheme of the prefabricated blocks, the reinforcing bar connecting piece and the self-leveling grouting effectively reduces the process of the overall structure construction, improves the construction efficiency, reduces the material waste on the construction site, avoids the generation of a large amount of building material garbage, effectively saves the construction cost, and improves the effect and long-term reliability of the window sill prefabricated reconstruction project.

The invention discloses a high torque mixing drilling rig and a construction method thereof, which belongs to the technical field of pile foundation construction, and includes a pile frame, a chassis, a vertical rotary power system, a circumferential rotary power system, a rotary drive, a rotary pressure plate, a drill rod, a drill bit, a chain, a solidified material pumping system, and a high pressure gas supply system; a stopper is provided on the drill rod; the pile frame and the chassis are connected by bolts, the rotary drive is connected to the pile frame by a slide rail, the rotary pressure plate is connected to the vertical rotary power system by a chain, the rotary pressure plate is connected to the drill rod by a flange, the drill rod is connected to the drill bit by a flange, and the solidified material pumping system and the high pressure gas supply system are connected to the drill rod by a high pressure hose. The invention reduces the center of gravity of the drilling rig by placing the power head downward, prevents the drilling rig from tilting forward during the construction process, and achieves the purpose of drilling, lifting the drill and transmitting torque at the same time by only setting one power head, thereby reducing the construction process, improving the construction efficiency, and saving the cost.

The invention discloses a high-pressure jet grouting construction method for a concrete dam diaphragm wall, and belongs to the technical field of concrete dams. Comprising the following steps: S1, determining an anti-seepage wall method; s2, determining the position of an anti-seepage wall; s3, an anti-seepage wall optimizing procedure is carried out; and S4, connection treatment of the anti-seepage wall is conducted. Whether the diaphragm wall method is feasible or not is determined through a series of operations; when the seepage gradient does not meet the requirement, the seepage gradient is reduced by prolonging the seepage path; the position of the diaphragm wall is optimized, and the diaphragm wall is moved to the upstream side of the dam body; the dam body and the diaphragm wall are constructed at the same time and do not interfere with each other, and the construction progress is accelerated; the anti-seepage wall abutment cap is poured firstly, then the high-pressure-spraying anti-seepage wall is constructed, the platform excavation time and the secondary backfilling time are saved, the construction cost is saved, and the construction period is shortened.

The invention relates to the technical field of tunnel engineering, and provides a construction method of a bealock section large-span multi-arch tunnel entry structure, which comprises the following steps: constructing a first pre-reinforcing pile assembly and a second pre-reinforcing pile assembly, excavating a temporary side slope to construct a middle pilot tunnel, excavating the middle pilot tunnel, and constructing a middle partition wall in the middle pilot tunnel after the middle pilot tunnel is communicated. And backfilling soil and stones to the bottom height of the protective arch, constructing the protective arch located above the left tunnel hole and the right tunnel hole, constructing an open cut tunnel section and an end wall type tunnel portal, backfilling soil at the top of the protective arch to the designed height, and then synchronously constructing the left tunnel hole and the right tunnel hole to the hidden tunnel section. According to the method, synchronous construction of the left main hole and the right main hole of the multi-arch tunnel can be achieved, the construction procedures of the multi-arch tunnel are greatly reduced, safety is high, meanwhile, the side slope is effectively reinforced, the side slope is prevented from collapsing in the excavation process, the design method of the protection arch is further provided, the determined protection arch can meet the structural requirement, and construction convenience can be improved.

The invention discloses mud removing and pile cutting equipment for a waste pile foundation and a construction method of the mud removing and pile cutting equipment. The equipment is composed of a sleeve assembly, a hydraulic pile cutting shearing mechanism and a mud removing reamer assembly. The sleeve assembly comprises a cylindrical inner sleeve; the hydraulic pile cutting and shearing mechanism comprises hydraulic shearing equipment, the bottom of the hydraulic shearing equipment is rotationally connected with a dredging reamer assembly through a rotary support, the dredging reamer assembly comprises a hollow supporting barrel, a spiral reamer is arranged on the outer wall of the dredging reamer assembly, and a plurality of third overflowing holes are formed in the reamer face at intervals. A plurality of form relieved teeth are arranged on the end face of the tail end of the lower side of the spiral reamer, and a serrated knife with a plurality of form relieved teeth is arranged on the outer wall, opposite to the spiral reamer, of the supporting cylinder; according to the equipment and the construction method, the old pile foundation can be cut to the designed elevation position at a time, the cut-off pile and the equipment are integrally hoisted and transferred, the construction procedures are reduced, the equipment loss is reduced, meanwhile, the operation efficiency is improved, and the equipment and the construction method can be widely applied to reconstruction, extension and upgrading reconstruction of old wharfs and land waste structures.

The utility model discloses a high-low span basement anti-floating system. A circumferential full-length blind ditch is arranged along a basement wall body; the basement bottom plate comprises a high bottom surface and a low bottom surface; the high bottom face is provided with high bottom face drainage channels which are arranged in a criss-cross mode. Low bottom surface drainage channels which are arranged in a criss-cross manner are arranged on the low bottom surface; the inspection well is communicated with the high-bottom-surface drainage channel and the circumferential full-length blind ditch; a silt well is arranged between the high-bottom-surface drainage channel and the low-bottom-surface drainage channel; a transverse blind ditch used for guiding water in the foundation pit wall into the inspection well is arranged in the foundation pit wall. One end, far away from the dredge well, of the low-bottom-surface drainage channel is communicated with an outdoor drainage system; when the underground water level is increased, water is guided in from the transverse blind ditch under the action of gravity, sequentially flows to the circumferential full-length blind ditch, the inspection well, the high-bottom-surface drainage channel, the mud sinking well and the low-bottom-surface drainage channel and finally flows to an outdoor drainage system; the structure is simple, construction procedures are few, construction period is short, cost is low, and detection is convenient.

The invention discloses a beam end reinforced prefabricated section steel part coated concrete beam-column node, which comprises a section steel part coated concrete column and a section steel part coated concrete beam, and is characterized by further comprising a connecting short beam, two column horizontal stiffening ribs are welded between column flanges, the column horizontal stiffening ribs are parallel to the beam flanges, and the connecting short beam is connected with the section steel part coated concrete column. A plurality of column vertical stiffening ribs are welded between the column horizontal stiffening ribs, a beam end stiffening plate is welded to the side, close to the short beam flange, of the inner side of the beam flange, one side of the short beam flange is welded to the beam flange and the beam end stiffening plate, and the corresponding side of the short beam web is fixedly connected with the beam web through a connecting steel plate. The other side of the short beam flange and the other side of the short beam web in the strong axis direction are welded to the column flange, the other side of the short beam flange in the weak axis direction is welded to the column horizontal stiffening rib, and the other side of the short beam web is welded to the column web. The method has the advantages of capability of improving the shear capacity of a column core area, few on-site connection procedures, simplicity in construction, short construction period and convenience in transportation.