37results about How to "Convenient and efficient construction" patented technology

The invention discloses a template embedded type dam face permanent heat preservation protection module and a prefabrication and construction method. Comprising a heat preservation core layer, a facing anti-seepage protection layer is arranged on the side, close to a concrete pouring formwork, of the heat preservation core layer, an internal pressure-bearing protection layer is arranged on the side, close to dam surface layer crack limiting steel bars, of the heat preservation core layer, and a thermal broken bridge supporting keel is arranged in the heat preservation core layer; an anchoring device is arranged in the area between the internal pressure-bearing protection layer and the dam surface layer crack limiting steel bars. The modular prefabrication and construction method is adopted, the prefabrication and installation method of a single module is simple and efficient, details such as anchoring protection measures are fully considered, the engineering construction operability is high, convenience and high efficiency are achieved, and the construction time of the heat preservation layer is greatly saved.

The invention discloses a steel-concrete column and prestressed steel-concrete beam large-span frame structure which is characterized in that a prefabricated column is arranged, the prefabricated column is made of a steel pipe-steel reinforced concrete column, the prefabricated column is composed of a cross beam section and a vertical section, the cross beam section comprises a column framework and an outer flange, and concrete is poured for forming; the prefabricated prestressed beam comprises a beam framework and an inner flange, the prefabricated column and the prefabricated beam are connected through a flange plate and a high-strength bolt, a PVC corrugated pipe is arranged in the column beam, and the prestressed tendon has various structural forms. Connection is reliable and stable, and structural integrity is guaranteed; in a large-span building, the structure can effectively solve the problems of self weight and crack resistance of a traditional reinforced concrete structure and the problem of high cost of the traditional reinforced concrete structure, can meet the requirements of the large-span building for the space without stand columns and the beam column bearing capacity, and has wide application prospects.

The invention discloses a building external wall heat preservation structure easy to disassemble and assemble, and belongs to the technical field of building external wall heat preservation, the building external wall heat preservation structure easy to disassemble and assemble comprises a mounting plate, a heat preservation plate is mounted in the mounting plate, a setting assembly is arranged in the mounting plate, a locking and adjusting assembly is arranged at one end of the mounting plate, and a disassembly assisting assembly is arranged in the mounting plate; the peripheral side faces of the heat preservation plate are tightly pressed through expansion of the setting assemblies, so that the heat preservation plate is rapidly installed in the installation plate, meanwhile, a gap between the heat preservation plate and the installation plate is blocked, the construction efficiency is improved, the requirement for the size precision of the heat preservation plate is effectively lowered, and the construction cost is reduced. The expansion state of the setting assembly is locked through the arranged locking and adjusting assembly, meanwhile, the expansion degree of the setting assembly can be adjusted through the arranged locking and adjusting assembly, a good expansion sealing effect can be achieved for heat preservation plates with different thicknesses, the heat preservation plates can be automatically disassembled through the arranged disassembly assisting assembly, and the disassembly efficiency is improved. And the insulation board is more convenient and labor-saving to disassemble.

The utility model relates to the technical field of rail transit, and discloses an integrated anti-vibration pad rail plate system, which comprises a concrete base, a rail plate, an anti-vibration pad, an anti-vibration pad and an anti-vibration pad, vibration reduction mechanisms are further arranged in the gap between the track plate and the concrete base and the gap between the track plate and the boss. According to the integrated anti-vibration pad track board system, the integrated anti-vibration pad is prefabricated or cast on site, the procedures of anti-vibration pad pasting and laying, mortar adjusting layer pouring, boss resin pouring and the like are replaced, and construction is more convenient and efficient; the device can be designed according to different track plate structure types and heights, the structure is simple, and good line adaptability is achieved; compared with a traditional elastic pad, the integrated anti-vibration pad is good in integrality, accurate in positioning and good in autohension, the phenomenon that the integrated anti-vibration pad falls off from the track plate after being used for a high frequency is avoided, and the using effect is remarkably improved.

The utility model relates to a combined structure of an implicit steel cover beam and an implicit telescopic device structure. The combined structure comprises an implicit cover beam (10), a main beam bracket (20), a support system (30), a limiting device (40) and an implicit telescopic device (50). The longitudinal bridge direction of the hidden cover beam (10) is consistent with the line shape of the main beam, the main beam is slotted to form two symmetrical main beam brackets (20), and the main beam brackets (20) are lapped on the hidden cover beam (10). And the main beam bracket (20) is limited by a limiting device (40). And the brackets are connected through hidden telescopic devices (50). The device is suitable for urban steel structure bridges, and effectively solves the problems that an existing bent cap is poor in attractiveness and economical efficiency, and an existing expansion joint structure is exposed on a bridge floor and poor in comfort.

The utility model discloses a stiff column type steel framework splicing structure which comprises a lower section type steel framework fixed on a foundation plane and an upper section type steel framework installed above the lower section type steel framework, an installation groove is formed in the top of the lower section type steel framework, and a deviation rectifying connecting assembly is arranged in the installation groove. The upper section steel framework is fixedly connected with the lower section steel framework after being rectified and positioned by the rectifying connecting component; the deviation rectifying connecting assembly is arranged between the upper section steel framework and the lower section steel framework, the supporting height of the deviation rectifying connecting assembly is adjusted through a middle double-thread screw, deviation is adjusted through peripheral adjusting screws, and the upper section steel framework can be assembled and positioned through the embedded connection mode of a cross-shaped positioning groove and cross-shaped steel; the whole construction process does not need to be assisted by jack equipment, accurate fine adjustment can be achieved through thread screwing adjustment, construction is efficient, simple and convenient, and deviation rectifying operation is easy.

The invention discloses a foundation fixing anti-seepage pad for reinforcing and repairing a railway ballast track, a ballast bed structure and a ballast bed reinforcing and repairing method. The foundation fixing anti-seepage pad is of a micro-arch structure with the middle higher than the two sides in the track direction and comprises a bottom surface anti-seepage layer, a middle grid layer and a surface protection layer, and the bottom surface anti-seepage layer and the surface protection layer are compounded on the lower surface and the upper surface of the middle grid layer through a binding agent. And the middle grid layer is a fiber reinforced composite material grid. The foundation-fixing anti-seepage pad provided by the invention is combined with the actual condition of a railway, integrates reinforcement and seepage prevention, has better mechanical properties, high elongation and excellent long-term corrosion resistance, fatigue resistance and seepage resistance, has a stronger horizontal constraint effect on ballast particles, can obviously enhance the bearing capacity of a ballast layer, effectively slows down settlement, reduces the problems of frost boiling and the like, and has a good application prospect. The repair frequency is reduced, and reliable guarantee is provided for the safety and the stability of a railway system.

The utility model discloses a kind of concrete roofing air pipe rainproof devices, solve the problem of rain leakage of air pipe through concrete roofing.The device includes air pipe rainproof device, indoor air pipe, outdoor air pipe, air pipe support, concrete roofing air pipe hole, roofing floor, roofing insulation layer, roofing waterproof layer, roofing hole flanging and cement mortar;Air pipe rainproof device is composed of indoor and outdoor connecting air pipe and rain cover, indoor and outdoor connecting air pipe two ends are connected indoor, outdoor air pipe respectively through air pipe flange, and fixed by air pipe support and roofing hole flanging;Rain cover contains hem, skirt, vertical edge and middle support column, can be enclosed rainproof space and cover hole flanging, hole gap is blocked with non-combustible material.The device is adapted to rectangle / circle, heat preservation / cold preservation / non-heat preservation metal air pipe, rainproof effect is remarkable, structure is stable and durable, construction is convenient, can guarantee indoor environment and ventilation system safe operation.

The utility model discloses a prefabricated moulding bed assembling type supporting system, and belongs to the field of construction equipment. The device comprises a transverse batten, a vertical batten and an adjustable assembly. The transverse battens are fixed at different heights of the inner wall of the prefabricated moulding bed in the circumferential direction, the vertical battens are arranged on the two opposite side walls of the prefabricated moulding bed in pairs, and each pair of vertical battens abut against the transverse battens through an adjustable assembly so as to be fixed; the adjustable assembly is of a length-adjustable horizontal straight rod structure and comprises an adjustable top support, a supporting side rod and a supporting middle rod. The adjacent adjustable assemblies which are perpendicularly intersected are fixed through vertical connecting long bolts. The sizing device is researched and developed for prefabricated moulding bed construction of the bearing platform, the bearing platforms of different sizes can be mounted in an assembled mode through length adjustment of the adjustable assemblies, construction is simple and efficient, and the sizing device can be repeatedly used.

The invention relates to an offshore wind turbine large-diameter steel pipe pile pumping solidified soil scouring protection construction method which is characterized in that flow state solidified soil can be pumped at different positions in a flushing pit through a flow state solidified soil symmetrical pumping device fixed to a steel pipe pile, intelligent construction of flow state solidified soil pumping is achieved, and the construction efficiency of flow state solidified soil pumping is improved; a layered flexible reinforcement sinking device is adopted, automatic unhooking of a lifting rope is achieved by controlling a telescopic rod of an oil cylinder, sinking construction of a geogrid is completed through net bag gravel, the layered flexible reinforcement effect of flow-state solidified soil is achieved, and meanwhile the erosion protection effect of the solidified soil is improved; according to the combined sand blowing bag-solidified soil retainer combined protection technology, the solidified soil retainer is formed in the mode that bagged solidified soil is thrown and filled in combination with solidified soil pumping, the good anti-scouring effect is achieved, and construction is convenient and efficient.

The utility model relates to the technical field of steel structure reinforcing, in particular to a welded reinforcing structure for a steel pipe wrapped outside a net rack, which comprises a newly added outer pipe formed by splicing two semicircular pipes, and the two semicircular pipes are welded and fixed into an integral structure; the newly-added outer pipe is arranged on the periphery of the existing steel pipe in a sleeved mode, a certain gap is reserved between the newly-added outer pipe and the existing steel pipe, and filling materials are poured into the gap. The steel pipe reinforcing device has the advantages that the existing steel pipe is effectively reinforced without damage, and the existing steel roof truss structure is not influenced; the structure is simple and reasonable, the prefabrication degree is high, construction is convenient and efficient, rapid construction can be achieved in the skylight operation period, uninterrupted operation is ensured, and the method is suitable for popularization.

The utility model provides a tunnel cover arch structure, including inside arch support structure, intermediate arch support subassembly, outside arch support structure and be used for the hole mouth pipe subassembly of setting up pipe shed, inside arch support structure erects in the outside of open cut lining structure, outside arch support structure erects in the outside of inside arch support structure, inside arch support structure and outside arch support structure are connected, the hole mouth pipe subassembly is connected in the outer wall of outside arch support structure, the outer wall of inside arch support structure forms has the first placement slot of the intermediate arch support subassembly placement, the inner wall of outside arch support structure forms has the second placement slot of the intermediate arch support subassembly placement, second placement slot and first placement slot one to one correspondence arrangement, the intermediate arch support subassembly places between first placement slot and second placement slot. The present application has the advantages of convenient and efficient construction, steel can be recycled, greatly reduces the loss.

The utility model provides a hybrid beam cable-stayed bridge steel-concrete combined beam section which comprises a bearing plate, a steel-concrete combined section and a steel beam transition section, and the steel-concrete combined section and the steel beam transition section are arranged on the two sides of the bearing plate respectively. The steel-concrete combined section comprises a first bottom plate, a first middle web plate and a first side web plate, the first bottom plate is connected between the first middle web plate and the first side web plate, and the first middle web plate, the first bottom plate and the first side web plate are connected to form a symmetric or asymmetric concave structure; each of the first bottom plate, the first middle web and the first side web comprises a plurality of steel grids and concrete bodies filled in the steel grids; the steel beam transition section comprises a second bottom plate, a second middle web plate and a second side web plate, and the outer contour of the cross section of the steel beam transition section is consistent with the outer contour of the cross section of the steel-concrete combined section. The steel-concrete combined section is simple in structure and convenient and efficient to construct, the stress performance of the steel-concrete combined section is optimized, and the steel-concrete combined section meets the structural requirements of the large-span cable-stayed bridge.

The invention discloses a photovoltaic device for treating heavy metal soil pollution and an application method thereof, comprising a slope, wherein a solar array and a vegetation array are sequentially arranged on the slope surface of the slope, wherein the solar array is located above the vegetation array, and the solar array and the vegetation array are separated by a horizontally arranged pedestrian and horse path; the solar array comprises a plurality of evenly arranged solar panels, each of which is detachably fixedly matched with the slope through a hollow anchor rod, wherein a lifting anchor is arranged in the hollow anchor rod, and the hollow anchor rod is detachably fixedly matched with the slope through the lifting anchor rod, and the lifting anchor of the solar array is energizedly matched with the solar panel; the vegetation array comprises a plurality of evenly arranged vegetation boxes, and the vegetation boxes are detachably fixedly matched with the slope surface of the slope through anchoring thorns, so as to repair the soil, absorb heavy metals, save energy and protect the environment, and stabilize the slope.

The application relates to the technical field of railway engineering materials, in particular to an anti-seismic and waterproof earthwork cloth manufacturing process for a railway track.S1: material pretreatment, selecting nano-modified polyester filaments, elastic rubber, HDPE resin, self-healing adhesive and nano-silicon dioxide powder as core raw materials;S2: completing preparation of each layer;S3: composite process, closely combining the anti-aging surface layer, the anti-seismic and damping middle layer and the anti-corrosion bottom layer through an intelligent temperature control composite process in an embedding structure to form a gradient composite structure;S4: factory prefabrication;S5: on-site paving and sealing;S6: finished product detection and repair, and completing the manufacturing.The layered preparation, precise embedding and intelligent temperature control composite process are adopted, the layers are closely adhered, molecular-level fusion is realized, the problems of layering and degumming between the layers are effectively avoided, and the overall structural stability of the earthwork cloth is favorably ensured.

The utility model discloses an assembly type wall structure convenient to install, which is formed by splicing box unit bodies, each box unit body comprises at least two side walls and a top plate, the positions of the side walls are oppositely arranged, the top plate is arranged at the tops of the side walls, and a plurality of embedded steel bars extending out of the wall surfaces are arranged at the bottoms of the opposite sides of the side walls. The embedded steel bars of the two side walls are arranged in a one-to-one opposite mode, the embedded steel bars are connected through bottom plate steel bars to form a post-pouring steel bar belt, and the post-pouring steel bar belt is wrapped with bottom plate concrete. The box unit body is simple in structure and convenient and efficient to construct, the side walls and the top plate of the box unit body are prefabricated parts produced in a modularized mode in a factory and are spliced in an assembled mode, the side walls and the bottom plate of the box unit body are constructed through a post-pouring process, the number of constructed splicing points can be reduced, the splicing process is simplified, the splicing difficulty is optimized, and the construction efficiency is improved. The assembly precision and the assembly quality of the whole structure are greatly improved, the connection reliability of the side walls and the bottom plate is guaranteed, and then the stability and the safety of the whole structure of a follow-up assembly type house are improved.

The utility model provides a safe copper bar connector for an energy storage system, which comprises a base, a current-carrying support, a current-carrying copper bar and a protective cover, the upper end of the current-carrying copper bar is connected with the top of the current-carrying support, and the middle part of the current-carrying copper bar is arranged in a copper bar channel in a penetrating manner and is positioned between the base and the current-carrying support; the lower end of the current-carrying copper bar extends to the bottom side of the current-carrying support. Lock catches are arranged on the locking side plates on the two sides of the protective cover, only the two sides of the middle of each lock catch are connected with the locking side plates, lock catch holes are formed in the lower portions of the lock catches, and lock catch clamping hooks are correspondingly arranged on the base; the protective cover is buckled on the base, and the lock catch clamping hooks are clamped in the corresponding lock catch holes. The current-carrying copper bar is of an integrated structure, is convenient to assemble, and is high in current-carrying capability, low in contact resistance and small in temperature rise. A plurality of locking and limiting structures are arranged, so that the stability of the assembled product is guaranteed, mistaken opening is reduced, no assembling risk exists, the safety and reliability are improved, the device can be suitable for more application scenes, and construction is more convenient and efficient.

The invention relates to a cement pavement rapid curing high interface bonding strength coating material and a preparation method thereof. The material is prepared by mixing a solid component and a liquid component, the solid component is prepared by mixing Portland cement, sulphoaluminate cement, quartz sand, alpha semi-hydrated gypsum, silica fume, silane and rubber powder; the liquid component is prepared by mixing water-borne epoxy resin, a water-borne epoxy curing agent and water. The coating material has the advantages that the coating material can be cured within 30 min to form a coating, the interface bonding strength reaches 0.8 MPa after curing is conducted for 3 h, the interface bonding strength reaches 1 MPa after curing is conducted for 24 h, and therefore it is ensured that a repairing layer and old concrete are tightly combined, and the repairing layer is effectively prevented from falling off. Construction is convenient and efficient, and the repairing efficiency can be improved by 10-20 times. The coating has good freeze-thaw resistance, and the durability of the coating can be prolonged.

The utility model discloses a road slope protection structure which comprises a plurality of waste tires fixedly connected to a slope, planting soil is arranged in the waste tires, climbing green plants are planted in the planting soil, and a protection net covers the upper surfaces of the waste tires. The slope protection device is simple in structure, the waste tires can be effectively recycled and applied to slope protection, construction is convenient, fast and efficient, construction cost is low, the period is short, cost and human input are greatly saved, the waste tires can have a good buffering effect on falling rocks, the falling rocks are prevented from rolling to a road to hurt pedestrians, and driving safety is improved. Green plants can be planted in the waste tires, so that the ecological environment of the side slope is improved, and the stability of the side slope is improved. Meanwhile, the upper surface of the waste tire is covered with a protective net, falling rocks are further blocked, and meanwhile climbing green plants can conveniently crawl and grow.

This utility model discloses a quick-connect seepage prevention structure for waterstops in underpass structures at road-bridge junctions, including adjacent overlapping waterstop bodies, pressing components, and a cold-bonded seepage prevention layer. The advantages of this utility model are: (1) Improved connection strength: The composite seepage prevention structure with cold bonding and pressing ensures stability under water pressure and structural deformation force, and the cold-bonded seepage prevention layer improves the seepage prevention effect of the joint; when subjected to 1.2MPa water pressure and ±20% structural deformation, no structural damage or leakage will occur; (2) Excellent sealing performance: It fills the transverse and longitudinal gaps tightly, and the formed cold-bonded seepage prevention layer fills the gaps that will inevitably form between the lower waterstop and the upper waterstop, as well as between the waterstop and the concrete structure, reducing the risk of leakage and ensuring waterproofing and structural safety; (3) Convenient and efficient construction: The construction method is clear and easy to operate, and the material cools down quickly, ensuring the safety of the underpass structure at the road-bridge junction.

The application discloses a kind of gob-side entry retaining support structure and construction method of steeply inclined coal seam fully mechanized working face.The support structure is arranged in the transport roadway near the side of goaf, including anchoring load-bearing parts, net body gangue retaining parts, restraint reinforcement, pre-stressed locking parts and flexible sealing material;Anchoring load-bearing parts are laid in the roof and bottom corner surrounding rock, net body gangue retaining parts are hung on the exposed section of anchoring load-bearing parts and cover along the whole height of roadway, restraint reinforcement is overlaid on the outside of net body and is connected with anchoring load-bearing parts, pre-stressed locking parts are set on the end of anchoring load-bearing parts and pre-tightening force is applied to form support base surface, and flexible sealing material is sprayed on the support base surface for sealing.The construction method includes drilling anchoring, hanging net body, installing restraint reinforcement, locking pre-tightening, spraying sealing.The application realizes the integration of support structure, has good gangue retaining and sealing effect, adapts to steeply inclined coal seam working condition, is convenient to construct and can be operated synchronously with mining, effectively improves the safety and reliability of gob-side entry retaining, and reduces the cost of mining.

The utility model relates to the field of building construction technology discloses a dustproof and noise reduction fence for building construction, including baffle no.

The utility model relates to the technical field of metal roofs, in particular to a waterproof metal roof structure which comprises a perforated profiled steel bottom plate, a glass wool sound absorption layer arranged on the surface of the perforated profiled steel bottom plate, a vapor barrier layer arranged on the surface of the glass wool sound absorption layer, and a rock wool heat preservation layer arranged on the surface of the vapor barrier layer. The TPO waterproof coiled material is arranged on the surface of the rock wool heat preservation layer, the metal support is installed on the surface of the TPO waterproof coiled material, the metal roof board is installed on the surface of the metal support, and the n-shaped lining purlins are arranged on one side of the rock wool heat preservation layer, and the number of the n-shaped lining purlins is two. The service life of the waterproof material on a building is prolonged, the waterproof material is not prone to failure in long-term use, the good waterproof function is kept all the time, the damage risk caused by temperature change and aging is reduced, and the structural safety of the building is guaranteed.

A lever-type device and method for testing the horizontal bearing capacity of underwater pile foundations is disclosed. The device includes a loading unit and a monitoring unit. The loading unit includes a support, a lever, a crossbeam, a cable, and a test vessel. The lower end of the support is fixed in the seabed or riverbed near the test pile. A bearing is welded normally to the upper end of the support. A hole is opened in the middle of the lever, serving as the fulcrum of the lever. The bearing at the upper end of the support passes through the opening in the middle of the lever and is connected to the support via a cap. The upper end of the lever is rigidly connected to one end of the crossbeam, and the other end of the crossbeam is rigidly connected to the outer wall of the test pile. One end of the cable is connected to the lower end of the lever, and the other end is connected to the test vessel. The monitoring unit includes a force gauge and a gyroscope. The force gauge is fixed to the crossbeam, and the gyroscope is fixed to the lever. Using this device for testing the horizontal bearing capacity of underwater pile foundations eliminates the need for high-level horizontal bearing capacity anchor piles to provide reaction force. It allows for single deployment, multiple tests, and reusability, making it economical and efficient.

The utility model provides a plate-end combined connector for a micro inverter, which comprises a body and a plurality of connectors arranged on the body, and shells of the connectors and the body are of an integrated structure. A plurality of mounting columns are arranged on the body, and the plurality of mounting columns and the plurality of connectors are arranged in a staggered manner; the body is provided with the fool-proof guide column, so that installation is convenient. The board end combined connector for the micro inverter adopts integral injection molding, is high in integration level and good in integrity, reduces the comprehensive cost, and enables the construction to be more efficient and convenient; the plurality of mounting columns and the plurality of connectors on the body are arranged in a staggered manner, and reinforcing ribs are arranged between the mounting columns and the adjacent connectors and between the mounting columns and the edge of the body, so that the structural strength is improved, the mounting stability is improved, and the warping deformation phenomenon is effectively prevented; and a plurality of sealing structures are designed, so that the waterproof performance is enhanced, and the safety and reliability of the product are improved.

The utility model provides a kind of anti-overload fastening assembly, including: threaded joint, with the internal thread matched with fastener;Torque limiting portion, fixedly connected with threaded joint;And when the torque between the torque limiting portion and threaded joint is applied to exceed threshold value, torque limiting portion is separated from threaded joint.The torque limiting portion is arranged around threaded joint, the connection between the torque limiting portion and threaded joint is realized by predetermined fracture structure, the predetermined fracture structure includes a plurality of tapered connecting arms, and the cross-sectional area decreases from the torque transfer portion to the threaded joint direction. Through a kind of anti-overload fastening assembly and the bathroom equipment mounting structure with it, torque control and overload protection in the fastening process are realized, while the stability and reliability of mounting structure are improved.

The utility model discloses a fixing and protecting device of a pile foundation top anti-vibration pad. The fixing and protecting device of the pile foundation top anti-vibration pad comprises a bottom plate, a fixing part and a limiting part. The fixing part is fixedly connected to the bottom plate, and the shape of the fixing part is the same as that of the bottom plate; the limiting part is arranged on the periphery of the fixing part so as to limit the movement of the fixing part and the bottom; the fixing part is of a net-shaped structure formed by frameworks which are staggered in the longitudinal direction and the transverse direction. The foundation top vibration isolation cushion is simple in structure, low in cost, convenient to construct and efficient, and meanwhile the problems that the foundation top vibration isolation cushion is prone to being affected by construction in the installation process, position deflection and errors are generated, the vibration reduction and isolation effect of a building (structure) is affected, and then the comfort degree of the building (structure) in the use process is affected can be effectively solved.

The utility model discloses a connecting structure for leveling a wall surface, which comprises a wall surface bearing member, a connecting frame and a plurality of purlines with adjustable positions, the connecting frame is connected with the wall surface bearing member, and the purlines are connected with the connecting frame through self-tapping screws; by means of the electromagnetic supporting block, the first leveling auxiliary assembly and the second leveling auxiliary assembly, a plurality of purlines can be located on the same vertical plane under the condition that the wall face is subjected to construction errors, the leveling precision of the wall face is guaranteed, and particularly, the position-adjustable purlines are additionally arranged on the wall face bearing component, so that the wall face bearing component is more accurate in leveling. The first datum plates of the auxiliary leveling assemblies arranged on the same plane serve as datum points, and purlines are adjusted and supported by means of wedge-shaped electromagnetic supporting blocks so that the purlines can be located on the same plane.

The utility model relates to the technical field of steel structure reinforcement, in particular to a net rack wrapping steel pipe bolt type reinforcing structure which comprises a newly-added outer pipe formed by splicing two semicircular pipes, the two semicircular pipes are provided with matched connecting plates, and the two semicircular pipes are fixedly connected into an integral structure through bolts arranged on the connecting plates. The newly-added outer pipe is arranged on the periphery of the existing steel pipe in a sleeved mode, a certain gap is reserved between the newly-added outer pipe and the existing steel pipe, and filling materials are poured into the gap. The steel pipe reinforcing device has the advantages that the existing steel pipe is effectively reinforced without damage, and the existing steel roof truss structure is not influenced; the structure is simple and reasonable, the prefabrication degree is high, construction is convenient and efficient, rapid construction can be achieved in the skylight operation period, uninterrupted operation is ensured, and the method is suitable for popularization.