36results about How to "Easy construction and operation" patented technology

The invention discloses a construction method for a chimney wall and a special electric jacking flat bridge. The construction method comprises the following steps of: building a bottom tube body on a basis of chimney by using a tripod rollover system; mounting a construction lifter in the center of the chimney to serve as vertical transportation equipment; erecting the electric jacking flat bridge, and supporting a large center platform of the electric jacking flat bridge through an elastic brace rod; vertically conveying the large center platform through the vertical transportation equipment, and annularly and horizontally conveying the large center platform through an annular horizontal transportation passage consisting of internal and external hoisting frames and hoisting platforms of the electric jacking flat bridge and tripods; binding steel bars, dismounting the tripods and templates, hoisting the internal and external hoisting frames, and performing concrete pouring construction; recycling the tripods layer by layer till the construction is finished; timely cutting off redundant parts of the large center platform along with the reduction of the radius of the chimney, and detaching the external hoisting frame at the outer end of the elastic brace rod; and detaching the internal hoisting frame after the construction reaches the top. The construction method has the advantages that the problem of high-altitude horizontal transportation can be solved, the abutted seams of the templates are regular, the quality is easy to control, the impression is good, the construction is safe, the construction speed is high, and the one-time investment is less.

The invention discloses a design method for a grouting channel of prefabricated concrete vertical members. The design method comprises the following steps that the upper-section prefabricated concretevertical member and the lower-section prefabricated concrete vertical member are prefabricated; a first bottom key groove, a second bottom key groove, an L-shaped grouting pipeline and an L-shaped observation pipeline are prefabricated in the upper-section prefabricated concrete vertical member; the first bottom key groove is connected with the L-shaped grouting pipeline, and the second bottom key groove is connected with the L-shaped observation pipeline; steel bar grouting sleeves are arranged on the lower portion of the upper-section prefabricated concrete vertical member and communicate with a horizontal joint of the upper and lower prefabricated members; and a grouting material sequentially enters the second bottom key groove, the horizontal joint of the upper and lower prefabricatedmembers and the first bottom key groove from the L-shaped grouting pipeline, is discharged form slurry outlets of the steel bar grouting sleeves firstly to block the slurry outlets of the steel bar grouting sleeves, and then is discharged from the L-shaped observation pipeline to block the L-shaped observation pipeline and the L-shaped grouting pipeline.

The invention discloses a self-pressurization protecting device and method thereof for keeping an expansive soil cut slope stable. The device comprises an anchor rod, a first circular plate, a second circular plate and a high-strength spring, the anchor rod is sleeved with the first circular plate and the second circular rod, the high-strength spring is arranged between the first circular plate and the second circular plate, a nut is arranged on the first circular plate, and the anchor rod is fixedly sleeved with the nut. By means of the self-pressurization device, the problem that the expansive soil cut slope tends to be unstable under the action of atmosphere is solved, the device is applicable to various types of expansive soil, meanwhile, the arrangement form is simple, the construction operation is simple and convenient, the device can be used for provisional protection as well, and the construction application prospect of the device is broad. The action mechanism of the protecting device conforms to the working rules of the expansive soil cut slope, and engineering characteristics of the expansive soil are taken into full consideration in the protection design; the construction efficiency is high, the arrangement is flexible, and the device is applicable to various soil layers; the device can be made of metal materials or bamboo or wood according to the protection time length, and the effect to the environment is little.

The invention relates to a fracture sliding sleeve component which comprises a shell, a first sliding sleeve and a second sliding sleeve. The first sliding sleeve and the second sliding sleeve are arranged in the shell. Through cooperation of a guide rod arranged on the shell and a guide rail arranged on the outer surface of the first sliding sleeve, opening and closing of the fracture sliding sleeve component can be achieved. The fracture sliding sleeve component can not be limited in the number of fracture layers, and is simple in operation and wide in application range.

The invention relates to a wear-resistant and anti-corrosion puddle which is characterized by comprising a material A and a material B. The material A comprises the following components of epoxy resin, metal silicon powder, brown aluminum oxide, nanometer silicon carbide, silicon carbide, and silicon corundum; and the material B comprises the following components of a curing agent, the metal silicon powder, the brown aluminum oxide, the nanometer silicon carbide, the silicon carbide, the silicon corundum and green carbon. According to the wear-resistant and anti-corrosion puddle provided by the invention, the material A and the material B are mixed and constructed in field, so as to achieve simple and convenient construction operation, strong integrity after curing, thermal shock resistance, oxidation and erosion resistance, and good wear resistance and acid resistance. Therefore, a fire-resistant and wear-resistant lining material in operation is prevented from being damaged and released; the continuous and safe operation of a boiler is ensured; the maintenance working capacity is reduced; and the operation cost is reduced.

The invention relates to the field of the lighting of factory buildings, in particular to a light-guide lighting system for a factory building in a cigarette industry. The light-guide lighting system for the factory building in the cigarette industry comprises a light guide tube, a light collecting cover, a diffusing screen and connectors, wherein each connector comprises a C-shaped steel connecting frame, anticorrosion wood, a rock wool board, a first waterproof coiled material, a second waterproof coiled material, a cement board, a waterproof board and a third waterproof coiled material. The light-guide lighting system adopting the special connectors for the preset light guide tube has the advantages that the manufacturing quality is guaranteed, field construction is simple and convenient to operate, the problems of condensation and dew formation of the inner wall of the light guide tube are solved, and the connection of the light guide tube and a roof with a space board and the reliability of waterproof construction are guaranteed.

The invention relates to a rapid pipeline water intake facility, in particular to a lost-foam pipe saddle which is provided with a pipe saddle substrate characterized by comprising mutually matched first semicircular pipe saddle unit and second semicircular pipe saddle unit. The first semicircular pipe saddle unit is provided with an outer pipe connecting opening, a first semicircular pipe saddle outer surface and a first semicircular pipe saddle inner surface which are penetrated by the outer pipe connecting opening; the second semicircular pipe saddle unit is provided with a second semicircular pipe saddle outer surface and a second semicircular pipe saddle inner surface; both ends of the first semicircular pipe saddle unit are provided with connecting structures; both ends of the second semicircular pipe saddle unit are provided with connecting structures; the connecting structure at one end of the first semicircular pipe saddle unit is matched with the connecting structure at one end of the second semicircular pipe saddle unit; and the connecting structure at the other end of the first semicircular pipe saddle unit is matched with the connecting structure at the other end of the second semicircular pipe saddle unit.

The invention discloses a light / heat curable waterborne polyurethane coating agent with a branch type molecular structure and a preparation method thereof, and the main components of the coating agent are as follows (by mass percentage): 20-45 percent of polyurethane with a specific structure and 55-80 percent of deionized water. The preparation method of the coating agent mainly includes the steps of preparing a polyurethane prepolymer which contains ionizable groups by diisocyanate and diol, preparing the polyurethane which contains the branch type structure by the polyurethane prepolymer and polyol, preparing the polyurethane with the specific structure by adding hydroxyl-containing acrylic ester in the polyurethane which contains the branch type structure, and adding a salt-forming agent in the polyurethane with the specific structure for even mixing and then dispersing into the deionized water, thereby preparing the light / heat curable waterborne polyurethane coating agent with he branch type molecular structure. A coating obtained after using the coating agent for coating has excellent low-temperature flexibility, and leather after the coating is characterized by high gloss, good hand feel, wear resistance, difficult break, good elasticity, good water resistance, good wrap resistance and so on.

The present invention relates to a large concrete cylindrical structure whose wall end is equipped with an excavation equipment and its sinking method. The cylindrical wall o f the bottom end of the large concrete cylindrical structure to be sunk is made into the cylinder feet which are arranged along the peripheric direction and formed into an inverted bellmouth cavity form, on the cydinder the the vertical through holes of high-pressure water, air pipe and mud-discharging pipe are alternatively arranged, and its circular excacation equipment is formed from vertical connecting side frames positioned at two sides and horizontal net-like steel blades positioned on the bottom portions of the side frames. Said invention also provides its sinking method by utilizing net-like steel blades, high-pressure water and air pipe and mud-discharging pipe.

A supporting system of a pre-stressed concrete laminated slab of a shear wall structure belongs to the field of building construction and comprises a quadruple shear wall body, a first wood brace, a second wood brace and a laminated slab, wherein Z-shaped fixation parts are arranged uniformly on the upper annular circumference on the inner wall of the quadruple shear wall body, the lower part of the Z-shaped fixation part is fixed on the shear wall body, an U-shaped groove is formed between the upper part of the Z-shaped fixation part and the wall part, and the first wood brace is respectively clamped in the U-shaped groove of the row of Z-shaped fixation parts on the upper part of each shear wall body. The supporting system of the pre-stressed concrete laminated slab of the shear wall structure provided by the invention is beneficial in that (1) construction operations of this invention are simple and convenient and can guarantee a construction period; (2) installation quality of the laminated slab can be controlled easily, and evenness can be guaranteed; and (3) the laminated slab provided by the invention is definite in load carrying, safe and reliable, and eliminates safety hidden dangers of template frame collapse with a traditional manner.

The invention discloses a parting water-stop design method of a concrete cast-in-situ diaphragm wall of a deep overburden layer dam foundation. The method comprises the steps that firstly, a perpendicular linkage joint between adjacent sections of the concrete cast-in-situ diaphragm wall is arranged as a fold line joint of a structure shaped like a Chinese character 'tu', and construction scabbling is conducted on the joint; secondly, a copper water-stop plate with the section being of a W-shaped structure is arranged at the position, located on the axis of the diaphragm wall, of the fold line joint, wherein the copper water-stop plate is perpendicular to the fold line joint, and a middle convex body cavity of the copper water-stop plate with the section being of the W-shaped structure is filled with a chloroprene rubber bar; thirdly, a GB three compound rubber water-stop plate is attached to the upstream side of the vertical linkage joint of the adjacent sections of the concrete cast-in-situ diaphragm wall, fixed through stainless steel expansion bolts, and then brushed with 3 mm emulsified asphalt in a covered mode. The method has the advantages that the service life of the concrete cast-in-situ diaphragm wall is prolonged.

The invention relates to a technique of cable leading below a bridge in bridge cable projects, in particular to a combined-type transition cable leading cage based on cable leading below the bridge. The cable leading cage is structurally characterized by comprising a head section cable leading cage body, a tail section cable leading cage body and a plurality of middle section cable leading cage bodies, an angle steel framework of the head section cable leading cage body is fixedly connected with an angle steel framework of one end of each middle section cable leading cage body by the fact that bolts are screwed into connection screw holes, according to the transition cable leading cage, an arc-shaped middle section is formed due to the fact that the multiple middle section cable leading cage bodies are connected in an end-to-end mode, and the angle steel framework of the other end of the last middle section cable leading cage is fixedly connected with an angle steel framework of the tail section cable leading cage body through bolts. The cable leading cage has the advantages that modularized on-site installation is adopted, construction operations are easy and convenient to achieve, time and labor are saved, efficiency is high, safety is good, the use range is wide, the cables are all led in a cage-shaped framework, the cable leading cable performs the function of surrounding the cables and accordingly the cable are not prone to being damaged.

The invention discloses a multiple-effect putty paint, which comprises the following raw materials (by weight ratio): Talcum powder 500-650 parts, ash calcium powder 110-155 parts, methylcellulose propylene glycol ether 4.1-5.2 parts, water 160-195 parts, nano water-repellent admixture 55-75 parts, styrene / acrylic emulsion 85-100 parts and film forming adjuvant 2.4-3.3 parts.

The invention relates to a high-tenacity caulking water stop belt for a channel structure. The high-tenacity caulking water stop belt comprises a hard water permeating pipe which is a hollow pipe. Bonding of filter paper and spraying of rapid hardening rubber are sequentially conducted on the outer wall of the hard water permeating pipe from interior to exterior, and a rubber block is arranged at the top end of the hard water permeating pipe. The manufacturing cost of the high-tenacity caulking water stop belt is not high, and materials can be conveniently taken from the local; a water stop structure formed by caulking filling materials can well adapt to deformation of an expansion joint, a composite material is formed by combining inorganic materials and organic materials, two main anti-seepage substances jointly play a caulking water stop role, wherein the inorganic materials are more durable and have larger deforming capability, and when the organic materials are in good condition, the inorganic materials play a filling and assisting role; and after part of the organic materials are out of action, the inorganic materials can continue to play a long-time, comprehensive and effective water stop role, and defects caused by the failure of the organic materials are completely offset.

The invention discloses a controllable air exhausting device for constructing a precast pile in a gas-containing soil layer and a construction method of the device. The device comprises the precast hollow pile, and a closed-opening pile tip is arranged at the bottom of the precast hollow pile; the air exhausting device is arranged at the front end of the closed-opening pile tip and can prevent engineering disasters caused by gas eruption in the gas-containing soil layer, and therefore personal and property losses are reduced; and pile end and pile side soil bearing carrying capacity within the gas-containing soil layer range can be improved, and settlement deformation of a pile foundation obtained after construction is reduced. The construction method of the device is easy and convenient to operate.

The invention discloses a waterproof structure of a basement exterior wall in a limited space, which comprises a raft foundation, a cushion layer and a self-waterproof reinforced concrete exterior wall, and a plain concrete layer, a flexible waterproof layer and an insulation layer are sequentially arranged on the exterior of the self-waterproof reinforced concrete exterior wall , there is a circular groove on the outer side of the insulation layer, the position and quantity of the circular groove correspond to the position and quantity of each anchor rod in the water-stop curtain of the deep mixing pile, the bottom and the wall of the circular groove are provided with foam glue, and the outside of the foam glue is made of waterproof mortar It is sealed with JS paint and connected with the insulation layer. A reinforced concrete force transmission plate belt is set at the level of each floor of the waterproof reinforced concrete exterior wall. The invention also discloses a construction method for the waterproof structure of the basement wall in a limited space, adopts multiple waterproof measures, has simple operation, low cost, superior performance and strong practicability.

The invention provides converter steel-tapping hole pumping and casting repair equipment and a casting repair method, and belongs to the technical fields of construction of fireresistant artesian casting material construction and equipment. The converter steel-tapping hole pumping and casting repair equipment is characterized in that a support frame is fixed to a delivery platform, wherein a material storing device is fixed to the support frame, and is connected with a feed opening of a pumping device through a conveying device, a discharge opening of the pumping device communicates with a heat insulating chute through a discharge pipe, and a material conveying device and the pumping device are both fixed to the delivery platform; and a high pressure gas source also communicates with the material conveying device through a high pressure gas pipe. Through hot-state artesian performance of a casting material, the casting material can be conveyed into a converter through a heat insulatingchute, and cast into tiny cracks between the periphery of casing pipe bricks and steel-tapping hole big bricks, and surplus heat of a backup lining brick is used for sintering. In the artesian process of the casting material, a liquid binder is added, wherein the casting machine is a magnesium artesian casting material, and main raw materials are sintered magnesia and fused magnesia. Efficient dispersing agents of explosion-proof fiber and polyocarboxy acid are added, and silicon dioxide micro powder, graphite or carbon black powder are compounded.

The invention relates to the technical field of electromagnetic control, in particular to an electromagnetic valve box; it includes a gas dehydration device, a filter decompression assembly and a box that are sequentially connected and arranged. The air port and water outlet, the air outlet on the top of the separation cylinder and the gas deflector inside the separation cylinder; the air source distributor assembly and the solenoid valve assembly are arranged in the box, and the filter decompression assembly and the air The source distributor assembly is arranged in communication, and the air source distributor assembly is arranged in communication with the solenoid valve assembly. The terminal installation guide rail and the zero-connection grounding terminal and the circuit breaker provided on the terminal installation guide rail are also arranged in the box body. The bottom is provided with a sealed waterproof cable joint and a stainless steel through-board joint.

The invention discloses a matching method for a double-sided laminated slab and an inner wall board, a matching structure of the double-sided laminated slab and the inner wall board, and an adjustingadhesive tape used in the above method and structure. The adjusting adhesive tape is an elastic rubber strip of an annular structure and used for blocking a splicing joint between the double-sided laminated slab and the inner wall board, since the adjusting adhesive tape can be self-adjusted according to the size of the splicing joint, so that not only can concrete be prevented from leaking, but also the construction operation is simple, convenient and easy, the cost is low, and the adjusting adhesive tape can be reused and has certain economic and social benefits.

The invention relates to a structure of a horizontal joint of an outer wall of a building. The structure of the horizontal joint of the outer wall of the building comprises an upper wall body and a lower wall body, wherein a protrusion A is arranged at the end, close to the outer side, of the upper wall body, a protrusion B is arranged on the middle part of the lower wall body, the position, closeto the inner side of the wall body, of a gap between the upper wall body and the lower wall body is filled with cement mortar, and sealant is arranged on the outer side of the gap between the upper wall body and the lower wall body; outer wall coatings are arranged on the outer sides of the upper wall body and the lower wall body; and a sealing strip is provided with a barb part embedded in the sealant. According to the structure of the horizontal joint of the outer wall of the building, the upward protrusion B is arranged, the protrusion B plays a role in blocking rainwater from entering theroom, and the horizontal joint is simple and convenient in construction operation.

The invention relates to the technical field of radar speed measurement auxiliary installation, in particular to radar speed measurement equipment with a debugging mechanism easy to assemble and disassemble. The radar speed measurement equipment comprises a longitudinal fixed rod, a transverse fixed rod and shooting equipment for radar speed measurement, wherein the bottom of longitudinal fixed rod is fixedly arranged at one side of a road, the transverse fixed rod is welded and fixed onto a side surface of the top of the longitudinal fixed rod, and a bottom assembly groove is formed in a right side of a lower surface of the transverse fixed rod. In the radar speed measurement equipment with the debugging mechanism easy to assemble and disassemble, a bottom lifting seat is controlled to ascend and descend and a top external threaded adjustment lead screw is controlled to rotate respectively by a first longitudinal lifting lead screw and a second longitudinal lifting lead screw, so thatthe shooting equipment for radar speed measurement movably connected to a translation opening in the bottom of a lower end of the transverse fixed rod is controlled to translate, ascend and descend,the assembly, disassembly and adjustment of the shooting equipment for radar speed measurement does not dependent on large-size lifting equipment and can be completed only by a worker to operate at the bottom, the construction operation is simple and convenient, the construction period is short, and the cost is low.

The invention discloses a steel bar connecting sleeve joint and an implementation method, and belongs to the field of steel bar engineering. The steel bar connecting sleeve joint comprises a first sleeve and a second sleeve which are provided with openings at two ends, a first liner tube and a second liner tube which are provided with openings at two ends, and a center rod, and the surface of thecentral rod is provided with annular raised rib rings. The liner tubes are provided with grooves corresponding to the center rod and are inlaid with the rib rings of the center rod. The surfaces of the liner tubes are threaded and can be screwed into a sleeve with threads on the inner wall. The steel bar connection at two ends of the sleeve adopts threaded mechanical connection, the sleeve can rotate freely in the axial direction around the center rod by the liner tubes, and the steel bar connecting sleeve joint and the implementation method are suitable for various working conditions requiring the connection of steel bars.

The invention provides a twin-axial cable with novel structure and a method for testing intra-pair transmission skew. The twin-axial cable comprises a wire pair and a sheath layer. The wire pair comprises two conductive core wires, each of the conductive core wires comprises an inner conductor and an insulating layer outside the inner conductor, and the wire pair is characterized in that a shielding layer is arranged outside the insulating layer of each of the conductive core wires. A drain wire is arranged in a gap between the wire pair, a wire pair shielding unit is arranged outside the wirepair, and a sheath layer is arranged outside the wire pair shielding unit. Single core wires which form the wire pair has shielding respectively, and the intra-pair transmission skew is optimized. The invention provides the method for testing the intra-pair transmission skew, and in order to simulate the possible change of the intra-pair transmission skew in actual use, a test procedure is simplified. The twin-axial cable has the advantages of low attenuation, small intra-pair transmission skew, uniform differential impedance and good social and economic benefits.

The invention discloses a fixed structure for installing a secondary pipe and a method for installing the secondary pipe. The secondary pipe comprises a line pipe and a wire box, wherein the line pipeis buried in a first wall, and the wire box is arranged at an end part of the line pipe. The fixed structure for installing the secondary pipe comprises a support rod, wherein one end of the supportrod is fastened and connected with the wire box, and the other end of the support rod is fastened and connected with a built wall. By the fixed structure for installing the secondary pipe, primary positioning formation can be performed on the line pipe and the wire box, accurate installation of the line pipe and the wire box is ensured, the damage of construction of brick setting is effectively prevented, the brick, line pipe and wire box formation effect is good, the influence on brick appearance quality is also reduced as much as possible, groove and hole disassembly is reduced, constructionis facilitated, and the material waste is reduced; the fixed structure is low in cost and can be repeatedly used; the fixed structure can be circularly used and is convenient to install and disassembly; and therefore, the fixed structure for installing the secondary pipe is simple and is high in practicability.

The invention provides a simple asphalt distribution cylinder and a use method thereof. The distribution cylinder comprises a cylindrical framework, wherein the cylindrical framework is sleeved with aconical cover surface; a nozzle exit is arranged at the lower part of the conical cover surface and is in threaded connection with a nozzle screen; glass wool is bonded between the cylindrical framework and the inner wall of the conical cover surface; a cylindrical body is arranged at the upper part of the cylindrical framework; the inner diameter of the cylindrical body is equal to that of the cylindrical framework; a push rod is embedded in the cylindrical body. The simple asphalt distribution cylinder is simple and novel in structure, and production cost required for the distribution cylinder is substantially reduced; compared with outdoor construction distribution equipment, the distribution cylinder is smaller in size, high in operability and made of a green and environment-friendlymaterial, so that environmental pollution is reduced, construction operation is simple and convenient, and daily maintenance of the structure of late construction is convenient; the asphalt sprayed from a long-seam-shaped nozzle is in a fine line shape and distributed in an oblate ellipsoid manner, jet interference of the asphalt is easily avoided, the asphalt is atomized through the nozzle screen, therefore, the asphalt is sprayed more uniformly, and the distribution effect is better.

The invention discloses a construction method of a double-layer slag-proof floor drain. The double-layer slag-proof floor drain is obtained first, and comprises an upper floor drain and a lower floordrain arranged up and down, an arc-shaped arch cover is arranged below a surface cover of the upper floor drain, an adjustment stud is fixed on the lower surface of the surface cover, and passes through the arc-shaped arch cover, and an adjustment nut is arranged on the adjustment stud and is positioned below the arc-shaped arch cover in a thread fit manner. During the construction process, the arc-shaped arch cover is closed in an upper cup body to cover a pipe orifice of an upper water pipe, so as to avoid the falling of debris, and after the construction is completed, the arc-shaped arch cover is abutted on the surface cover by the adjustment nut, and the arc-shaped arch cover leaves the inner bottom surface of the upper cup body, so that normal drainage can be performed. The construction method is simple in construction operation and reliable in use.

The invention discloses a hollow interlayer concrete filled steel tube pouring body with tensile ribs, and a construction method of the hollow interlayer concrete filled steel tube pouring body. The hollow interlayer concrete filled steel tube pouring body comprises an inner steel tube and an outer steel tube which are concentric and are formed by a plurality of straight steel plate components inassembled and welded modes, wherein bent hooks are welded to the two straight steel plate components constituting the outer side steel tube, concrete is poured into a hollow interlayer formed by the two concentrically-placed steel tubes, the hollow interlayer concrete filled steel tube pouring body further comprises bidirectional opposite-pulling stirrups arranged in the hollow interlayer, the opposite-pulling stirrups are evenly arranged in the height direction of the steel tubes, the opposite-pulling stirrups and positioning longitudinal ribs are manufactured into the form of a steel reinforcement cage, and through a construction method of combining welding with bent hook sleeving, the stirrup cage is effectively connected with the interlayer inner surfaces of the steel tubes with the hollow interlayer. Construction operation is easy and convenient, the defects that the restraint effect of the inner steel tube and the outer steel tube of the hollow interlayer concrete filled steel tube pouring body on the concrete is insufficient, and the inner layer steel tube has no restraint effect on the concrete are overcome, the bearing capacity of the hollow interlayer concrete filled steel tube pouring body is improved, and the structural performance of the hollow interlayer concrete filled steel tube pouring body is further optimized.

The invention discloses a construction method and a structure of fixing a cantilevered I beam by foam. The construction method comprises the following steps of first, inserting the cantilevered I beaminto an I-shaped notch of a foam pup joint; then arranging the cantilevered I beam sleeved with the foam pup joint on a structural plate according to a construction scheme demand; after the cantilevered I beam is arranged, mounting a reinforcing steel bar and a template of a shear wall and carrying out pouring of concrete of the shear wall; forming a construction structure of fixing the cantilevered I beam by foam after pouring of concrete of the shear wall, wherein the construction structure of fixing the cantilevered I beam by foam is reserved till an outer rack removal stage; eliminating the foam pup joint first; then pulling out the I beam after elimination; scabbing concrete holes left by eliminating the pup joint; and then plugging the holes by concrete. The construction method is simple in construction operation, a customized foam member is small in dimension, light in weight and quite convenient for field work operation, a problem of leakage of grout in a conventional processcan be reduced, and the concrete pouring quality around a connector is improved.