149results about How to "Engineering quality is safe and reliable" patented technology

The invention discloses a construction method of a basement roof polyvinyl chloride root thorn resistance waterproof roll. The construction method is characterized by comprising the steps of: (a) construction preparation; (b) base layer treatment of the root thorn resistance waterproof roll; (c) construction of a reinforced additional layer in a node; (d) large surface construction of the polyvinyl chloride root thorn resistance waterproof roll; (e) head shrinkage treatment of the polyvinyl chloride root thorn resistance waterproof roll; and (f) cleaning, checking and acceptance of the polyvinyl chloride root thorn resistance waterproof roll. The construction method of the basement roof polyvinyl chloride root thorn resistance waterproof roll has the advantages of reasonable design and simple operation in production of the additional layer of the polyvinyl chloride root thorn resistance waterproof roll, no influence on construction period, lower investment, safe and reliable engineering quality, improvement of once acceptance pass percent, in particular prominent improvement of root thorn and water resistant in the node and elimination of subsequent node leakage hidden danger of a basement roof, and wide promotion and application prospect.

A method for mounting a continuous production line of non-oriented silicon steel is characterized by including the steps of a, manufacturing and mounting a gantry frame steel structure; b, mounting single equipment online; mounting a horizontal continuous annealing furnace; and d, mounting process pipelines, including mounting of an industrial pipeline and an inter-unit pipe. The method for mounting the continuous production line of non-oriented silicon steel has the advantages that mounting efficiency is improved, and time limit is shortened; and construction process is simplified and compact, labor and construction cost are economized greatly, project quality is safe and reliable, and economic benefit is high.

The invention discloses an airbag type inner framework from traveler and a primary tunnel supporting shotcrete construction method. The form traveler comprises a movable supporting framed bent, an inflatable formwork located on the outer side of the movable supporting framed bent, and a retractable supporting device for supporting the inflatable formwork, and the retractable supporting device is installed on the movable supporting framed bent and located on the inner side of the inflatable formwork. The construction method includes the steps: firstly, forwarding the airbag type inner framework from traveler in place; secondly, performing primary tunnel supporting shotcrete construction; thirdly, performing primary tunnel supporting shotcrete construction on a next tunnel section; fourthly, repeating the third step for multiple times till the primary tunnel supporting shotcrete construction process of all the tunnel sections is finished. The airbag type inner framework from traveler is reasonable in design, simple to construct and good in using effect, resilience rate of primary tunnel supporting shotcrete is effectively controlled through an airbag type inner framework, construction efficiency is high, construction period is short, construction quality is high, and zero resilience rate of primary tunnel supporting shotcrete can be realized.

The invention discloses a cast-in-place pile construction method by adopting two retaining cylinders to transverse a deep and thick gravel layer. The cast-in-place pile construction method is characterized by comprising the following steps: a, clamping the groove part of an outer steel retaining cylinder (5) with a clamp (2) of a vibration hammer (1); b, completely extracting rock cores from the outer steel retaining cylinder (5) with a rotary drilling machine; c, hoisting an inner steel retaining cylinder (3) with the vibration hammer; d, clamping a hoisting lug (4) on the outer steel retaining cylinder (5) with the vibration hammer (1); e, extracting soil from the inner steel retaining cylinder (3) with the rotary drilling machine; f, putting down a steel reinforcement cage; g, pouring concrete; and h, pulling out the inner steel retaining cylinder (3) with the vibration hammer (1) to complete pouring of a cast-in-place pile. The cast-in-place pile construction method by adopting the two retaining cylinders to transverse the deep and thick gravel layer has the characteristics of being capable of constructing the cast-in-place pile with the two retaining cylinders on a complicated stratum without special equipment, being high in construction speed and being low in manufacturing cost.

The invention discloses a method for building a cellular regenerative chamber of a coke oven. The method is characterized by comprising the following steps of: a, building a main wall and a single wall of the regenerative chamber; b, building a small cross wall of the regenerative chamber; c, building lattice bricks; d, placing rubber skins and wood boards for protection; and e, repeating the steps a-d until the building design height of the cellular regenerative chamber of the coke oven is reached. The method for building the cellular regenerative chamber of the coke oven, disclosed by the invention, has the advantages of being reasonable in construction step design and simple in operation, changing a conventional building method, being large in construction space and orderly in management of refractory materials, being capable of immediately monitoring the building quality, being safe and reliable in project quality, increasing labor efficiency, greatly reducing the construction period and lowering the project cost.

A large-span steel structure roof sliding method for an electronic factory building is characterized by including the following steps: a. arranging a steel pipe column 351*10mm in diameter beside theinner side of a two-layer concrete column at each roof steel structure truss base on each side of the plant span; b, connecting the bottom of each steel pipe column with a two-layer lattice beam through a hoop; c, arranging a sliding track beam at the tops of the steel pipe columns; d, placing a 43kg track in the middle of the top of the track beam; e, placing a sliding shoe at a position corresponding to a steel beam of a bottom cord of a roof steel structure truss and above the 43kg track; f, providing a crawler, and pushing the sliding shoe by the crawler; g, completing the entire roof sliding mounting by a roof steel structure truss sliding process. The large-span steel structure roof sliding method has the advantages that a sliding process device is simple in structure, the sliding construction quality is safe and reliable, the problem that two-layer boards of plants cannot be mounted by crawler cranes and roof steel structure sliding cannot be carried out by original design structures are solved, the construction time is shortened, and the construction cost is reduced.

The invention discloses a high-altitude cantilever structure formwork support and an upper protection system construction method. The high-altitude cantilever structure formwork support and the upper protection system construction method is characterized by comprising the following steps that a, construction positioning is conducted in advance along with a building main body structure, embedded parts are installed, and connecting bolts are reserved; b, cantilever girders and lower inclined struts are installed; c, the support bottom is closed; d, a high-altitude cantilever structure formwork support body is erected; e, acceptance and concrete pouring are conducted; and f, edge protection construction is conducted before modeling construction of an inclined roof on the upper portion of a roof, vertical rods on the outer side continue to be heightened in a staggered mode, the vertical rods on the outer side are connected with newly-added vertical rods above a cornice into a whole, temporary tying is conducted, and it is guaranteed that a protection system is stable and reliable. The high-altitude cantilever structure formwork support and the upper protection system construction method have the advantages that the problems that a high-altitude cantilever structure formwork support system cannot take roots and exert force, and a reliable safety protection system cannot be arranged in upper roof modeling construction are solved, and a large amount of profile steel is not needed; and factory processing is adopted, installation is convenient and fast, turnover use can be achieved, and quality guarantee and construction safety are achieved.

The invention relates to a construction method of a high-pressure jet grouting pile used outside an underground diaphragm wall joint for reinforcing a seal waterstop. The mature high-pressure jet grouting pile construction method is adopted, and the seal waterstop is strengthened and reinforced in the underground diaphragm wall joint weak link in a form of constructing the high-pressure jet grouting pile outside the underground diaphragm wall joint. The method is characterized by including the following technical steps of a, determination of construction parameters and selection of construction methods, b, jet material control, c, measurement and locating, d, pile test, e, technical control on jet process construction, f, grout return observation, g, recharge, h, observation of surroundings in the jet process, and i, abandoned slurry sewage discharge. The method has the advantages of the mature construction process of the high-pressure jet grouting pile, simpleness, convenience in construction, safety and reliability in construction quality, obvious effect on waterstop reinforcement of the underground diaphragm wall joint, capabilities of greatly lowering potential risk in foundation pit construction and meeting economic benefit of engineering construction.

A deformation joint formwork erection construction method is suitable for wall structure expansion joints, and is characterized by including the steps that a, the wall area at a construction joint isworked out according to a construction drawing, and meanwhile it is determined that timber formworks are used according to formwork materials supplied on site; b, the wall inner formwork is manufactured; c, the wall outer formwork is manufactured; d, formwork reinforcement is carried out; e, formwork installation is carried out, wherein the whole reinforced deformation joint formwork is hoisted tothe deformation joint through a tower crane and then is installed and fixed at the deformation joint by workers. The deformation joint formwork erection construction method has the advantages that the deformation joint formwork is simple in structure and convenient to manufacture, the overall laying mode is adopted for the deformation joint formwork, reinforcement measures for the deformation joint formwork are effective, the phenomena of formwork swelling, bottom grout leaking and the like will not occur, the construction quality is improved, and the construction cost is reduced.

The invention relates to a pile extracting sleeve which is used for concrete prefabricated square pile pulling operation. The pile extracting sleeve comprises a steel pipe, four tongues, a water pipeand an air pipe, and is characterized in that a steel pipe body is a welding steel pipe with one end fixedly provided with lifting lugs in a welded manner, the four tongues are arranged at the other end of the steel pipe body, four square holes are formed in the steel pipe body in a quartering circumferential manner, two seat plates are fixedly welded to the outer walls of the square holes in parallel, a through hole is formed in the center of each seat plate, and a pin shaft is contained in each through hole; and when the steel pipe is upwards pulled, the four tongues are opened toward the center in the pipe at the same time, one side of each tongue tip abuts against a pile pipe, and the other sides of the tongue tips are lined at the positions, where the square holes are formed, on the wall of the steel pipe body. The pile extracting sleeve and a using method of the pile extracting sleeve have the advantages that the pile extracting sleeve device is simple in structure, convenient tomanufacture, high in pile pulling speed, safe and reliable in construction quality, simple in pile pulling process and convenient to construct and reduces the engineering cost.

The invention discloses a mold device for manufacturing a + type cavity concrete mold block. The mold device comprises an outer mold, an inner mold and opposite-pull screws, and is characterized in that the outer mold is provided with two main clamping plate units (3) and two auxiliary clamping plate units (4), wherein the opposite-pull screws (8) at the two ends of the main clamping plate units penetrate through the main clamping plate units; the inner mold is provided with clamping plates (5), auxiliary clamping plates (6) and square timbers (7); the main clamping plate units, the auxiliaryclamping plate units, the clamping plates, the auxiliary clamping plates and the square timbers are spliced after cutting to form a wall with the same width size and the same thickness as the masonrywall; and the height size is the same as the height of bricks for masonry. The mold device changes a traditional formwork erecting mode, and has the advantages of further guaranteeing the constructionquality when improving the working efficiency, repeatedly recycling a shaping formwork for manufacturing the concrete mold block and reducing the engineering cost.

A desulphurizing tower bottom replacing method employing Jig frame bearing is characterized by comprising the following steps: a, isolating a desulphurizing tower, and clearing away combustibles in the tower; b, manufacturing and welding a jig; c, welding reinforcing plates and corbels; d, arranging a hawser; e, arranging a *-shaped support in the tower; f, arranging positioning baffle plates; g, replacing the bottom of the desulphurizing tower. The desulphurizing tower bottom replacing method employing Jig frame bearing has the advantages as follows: a jig frame device is simple in structure, convenient to manufacture and good in using effect; the construction quality is safe and reliable; the difficulty in replacing the bottom of a large-sized tower and other non-standard equipment after bottom corrosion under the conditions that the environment is complex and a site is limited is overcome.