55results about How to "Construction organization is convenient" patented technology

The invention discloses a sliding platform and a construction method for separately mounting grid structures on high altitudes. The sliding platform for separately mounting the grid structures on the high altitudes is arranged in an industrial factory building. The industrial factory building is provided with crane beams, and overhead crane tracks are arranged on the crane beams. The sliding platform for separately mounting the grid structures on the high altitudes comprises a grid structure type sliding platform, a scaffold operating platform and pulling equipment. The grid structure type sliding platform is slidably arranged on the overhead crane tracks via a plurality of sliding rollers; the scaffold operating platform is arranged on the upper surface of the grid structure type sliding platform; the pulling equipment is connected onto the grid structure type sliding platform, so that the grid structure type sliding platform can slide along the overhead crane tracks. The mounting quality of the grid structures, with bolt-sphere joints, of the industrial factory building can be sufficiently guaranteed, the time and labor can be saved, and the safety of staffs for constructing the grid structures on the high altitudes and the safety of construction staffs below the staffs can be guaranteed. The sliding platform and the construction method have the advantages of flexibility, convenience, speediness and low cost. Besides, merits can become obvious along with increase of ratios of the longitudinal lengths to the span of the grid structure.

The invention provides a preformed hole fender pile, belongs to the field of building, in particular relates to a fender pile capable of barricading earth and water and applied to deep foundation pit engineering, and discloses a preparation method for the preformed hole fender pile. The cross section mode of the fender file is a square of which two semi-circles of opposite lateral surfaces are cut off. The fender pile is a preformed pile, has better compactness, permeability resistance, side pressure resistance and shearing resistance capacity, and does not need maintenance. The fender pile has simple construction, saves time and labor, and has short construction period and water retaining function; and the construction is completed by only driving a row of piles.

The invention discloses a construction method of foundation pit support structure under karst and/or fissure development strata, and belongs to the field of rail traffic construction. The constructionmethod of the foundation pit support structure mainly includes the construction steps of advanced drilling, partition drilling, partition grouting, karst cave handling, and fissure handling. By meansof the construction method, accidents like sudden loss of arm protection mud and instability and collapse of a hole wall are not prone to occur, the stability of a foundation pit in an excavation process is good, and the safety of a main structure during the rail traffic operation is guaranteed. The construction method of the foundation pit support structure is easy to construct, low in cost, high in efficiency, convenient to organize, reasonable in procedure, safe and reliable, and wide in application scope.

The invention relates to a sectional sliding roof steel truss assembling method. The method is characterized by including the following steps of building a construction platform (5), preparing steel truss basic component units (24), installing first piston shoes (20) and second piston shoes (21), installing support trusses (2), installing longitudinal main trusses (22), installing transverse main trusses (23), lifting, assembling and transversely connecting the steel truss basic component units (24), sliding sectional steel trusses (1), putting the sectional steel trusses (1) in position, assembling the other sectional steel trusses (1), sliding the other sectional steel trusses (1), putting the other sectional steel trusses (1) in position, connecting transverse rods among the sectional steel trusses (1), disassembling second piston shoes (21) and sliding rails (3), and disassembling the construction platform (5). The method belongs to the field of steel structure engineering, roof steel trusses are prepared in sections and put in position by sliding, the problems that roof window construction time of an existing operating railway is short and difficulty of the construction is large are effectively solved, the construction efficiency is improved, and when applied in practical engineering, the method can obtain good technical and economic benefits.

The invention discloses a transformation method of a regular polygonal thin oil sealed gas cabinet. The transformation method comprises the following steps: a piston oil groove support and a piston oil groove of the regular polygonal thin oil sealed gas cabinet are dismounted; an inner cylinder is mounted; brackets are mounted and connected to a side plate and a stand column of the gas cabinet; the connected brackets are connected with the inner cylinder; a truss of a piston and a piton baseplate are adjusted according to the shape of the inner cylinder, so that the shape of the piston is matched with the shape of the inner cylinder; a piston fence is arranged on the piston to form a one-section rubber film sealed gas cabinet piston; piston sealing profile steel is arranged at the bottom end of the piston fence; inner cylinder sealing profile steel is mounted on the inner cylinder in the peripheral direction; and a rubber film is unfolded, and two ends of the rubber film are respectively connected with the inner cylinder sealing profile steel and the piston sealing profile steel. The transformation method renewedly uses a cabinet body of the wasted polygonal thin oil sealed gas cabinet, and is low in construction investment, short in construction time and higher in economic benefit.

The invention relates to a connection structure of a prefabricated assembly column and a reinforced concrete foundation. The connection structure is characterized in that the bottom surface of the prefabricated assembly column is provided with a connection tenon, a foundation connection steel body, column side connection ribs and a column bottom reinforcement plate, the top part of the prefabricated assembly column is provided with built-in connection bolts, connecting steps, column inner connecting reinforcement bars and connecting anchor bars, and an interface grid layer is arranged on the outer surface of the prefabricated assembly column; the upper surface of the reinforced concrete foundation is provided with a column bottom connection groove, a reinforcing angle steel arrangement groove and a column side connection rib insertion groove, the interior of the reinforced concrete foundation is provided with a foundation inner anchor plate, foundation connection ribs and post-glue-injection holes; a column bottom shock absorber layer and reinforcing angle steel are arranged at the junction of the reinforced concrete foundation and the prefabricated assembly column; a limiting hoopplate is arranged outside the reinforcing angle steel; the foundation connection bars are connected with the column inner connecting reinforcement bars through a steel bar connection section, and a closed strip is arranged at the intersection of a post-poured concrete layer and the prefabricated assembly column. The connection strength of the structure can be enhanced, and the shock resistance ofthe structure can be improved. The invention also discloses a construction method of the connection structure of the prefabricated assembly column and the reinforced concrete foundation.

The invention belongs to the technical field of design and construction of tunnel and underground engineering, and particularly relates to a high-side-wall anchored primary support structure for a rock strata underground excavation underground structure, and a construction method of the high-side-wall anchored primary support structure. The high-side-wall anchored primary support structure is characterized in that the surface of a steel pipe pile and an adjacent steel pipe pile are sealed through a spray concrete surface layer; the tops of the steel pipe piles are vertically connected through a top ring beam; a ring beam grouting steel pipe is embedded into the top ring beam; a ring beam prestress anchor cable and a steel pipe pile prestress anchor cable are vertically arranged; one end of the ring beam prestress anchor cable is mounted on the top ring beam and locked by a ring beam fixing part; the steel pipe pile prestress anchor cable is positioned below the ring beam prestress anchor cable; the ring beam prestress anchor cable is fixed to the spray concrete surface layer through a concrete fixing part. The high-side-wall anchored primary support structure is suitable for a straight sidewall primary support structure of a large cross tunnel and an underground structure which are arranged at the weak fractured rock strata.

The invention discloses a method for reconstructing a cylindrical gas holder. The cylindrical gas holder comprises a holder body, a piston box beam, a piston center ball shell, a sealing device hanging ring beam, a piston guide wheel bracket and a sealing mechanism. According to the method, a reconstruction process comprises the following steps: disassembling the sealing mechanism of the cylindrical gas holder; disassembling the piston guide wheel bracket of the cylindrical gas holder; arranging a piston fence of a single-stage rubber sealed gas holder on the piston box beam of a cylindrical gas holder piston, and arranging a piston sealing steel section on the sealing device hanging ring beam of the piston; arranging a holder body sealing steel section on the holder body of the cylindrical gas holder; and spreading a rubber membrane, and connecting the two ends of the rubber membrane with the piston sealing steel section and the holder body sealing steel section in a sealing manner. The method provided by the invention has the advantages that the holder body and other auxiliary structures of the cylindrical gas holder are sufficiently utilized, so that the reconstructed cylindrical gas holder can be put into use again when the whole structure of the cylindrical gas holder is slightly reconstructed, neither a lot of construction capital nor long-term construction is needed, and the economic benefit is extremely high.

The invention discloses a single-stage rubber membrane sealed gas holder reconstructed from a regular polygonal thin oil sealed gas holder. The single-stage rubber membrane sealed gas holder comprises a polygonal holder body, a circular piston arranged in the polygonal holder body, as well as a sealing mechanism arranged between the polygonal holder body and the circular piston, wherein a plurality of connecting brackets and an inner cylinder connected with the connecting brackets are arranged in the polygonal holder body; an inner cylinder sealing steel section is arranged on a lateral plate of the inner cylinder in the circumferential direction of the inner cylinder; the circular piston comprises a circular piston baseplate, a truss arranged on the circular piston baseplate and a piston fence connected with the truss; a piston sealing steel section is arranged at the edge of the circular piston baseplate; the sealing mechanism comprises a rubber membrane and a corrugated plate; the two ends of the rubber membrane are respectively connected with the inner cylinder sealing steel section and the piston sealing steel section in a sealing manner; the distance between the bottom end of the inner cylinder and the bottom of the polygonal holder body is not greater than the height of the rubber membrane; and the distance between the top end of the inner cylinder and the bottom of the polygonal holder body is not greater than the height of the piston fence. The single-stage rubber membrane sealed gas holder provided by the invention is low in investment, short in construction period and considerable in economic benefit.

The invention provides a soft-rock large-span tunnel double-layer overlapped lining support removing method and structure. The method comprises the following steps that a primary support base face is leveled, a middle partition wall reinforcing mesh is mechanically broken and removed, wet spraying concrete is sprayed, and part of profile steel supports are detached; a geotechnical cloth buffer layer and a waterproof layer are sequentially laid close to the primary support base face, and waterproof treatment is conducted on the temporarily-reserved embedded support joints of the profile steel support; a formwork project is erected on the inner side of the primary support, steel bars are bound, and an outer layer secondary lining is molded; after the outer-layer secondary lining reaches the design strength, the profile steel support and the outer-layer secondary lining formwork project are dismantled; the base faces of the embedded support joints are flattened through cement mortar, and a waterproof reinforcing layer is laid on the base face of the outer layer secondary lining; and the formwork project is erected on the inner side of the outer layer second lining, the steel bars are bound, the inner layer second lining is molded, and after the inner layer second lining reaches the strength required by design, the formwork project of the inner layer second lining is removed. According to the method, the support dismounting construction risk can be effectively avoided, the overall waterproof quality of the lining can be improved, and the engineering, economic and social benefits are remarkable.

The invention discloses a construction structure and method of tunnel entering. A support is composed of filling piles, crown beams and grating steel frame net spraying concrete; an advanced pipe shedor a small guide pipe grouting or an anchor rod is constructed along an excavation line to be treated as an advanced support of underground excavation, and thus effective auxiliary measures are provided for underground excavation; and entering construction is conducted in a step-by-step mode. Earth-rock excavation and the protection workload are reduced, backfilling is reduced, land occupation isreduced, damage on ecological environments is reduced, side slope stability is facilitated, conservation of water and soil and environmental protection are facilitated, the built landscape effect isgood, and construction organization is simple and convenient.

The invention provides a grouting structure of a prestressed concrete stiffening beam long duct and a construction method thereof. The grouting structure comprises a grout supplementing pipe, grout discharging pipes, grout stopping valves, transparent steel wire hoses, a four-way connector, grouting devices, a vacuumizer, an ultra-long prestressed duct and a concrete stiffening beam, wherein the ultra-long prestressed duct is arranged in the concrete stiffening beam, grouting holes are formed in the two ends of the ultra-long prestressed duct, a grout stop valve is arranged on the grout supplementing pipe, two connectors of the four-way connector communicate with the two grout discharging pipes through the two transparent steel wire hoses respectively, in the other two connectors of the four-way connector, one connector communicates with the vacuumizer through the transparent steel wire hose, the other connector communicates with the outside through the transparent steel wire hose, four connectors of the four-way connector are provided with a grout stop valve respectively, and the two grouting devices communicate with the two ends of the ultra-long prestress duct respectively. Thegrouting structure can ensure the compactness of grouting.