56results about How to "Solve the difficulty of construction" patented technology

The invention provides an offshore wind turbine single pile-suction cylinder combined foundation and a construction method thereof. The combined foundation comprises a single pile and a suction cylinder which are connected with each other vertically, a partition plate is arranged in the suction cylinder and divides the suction cylinder into an upper cylinder body and a lower cylinder body, the upper cylinder body is generally located above a seabed mud surface, and if the scouring depth is considered, the upper cylinder body can be sunken below the seabed mud surface when the calculated scouring depth is large, and a cover plate of the upper cylinder body is flush with the mud surface. The lower cylinder body is opened downwards and penetrates into a rock soil covering layer; and the bottom end of the single pile penetrates through the upper cylinder body and abuts against the partition plate. According to the method, the suction cylinder penetrates into a designated elevation throughintegral self-weight sinking of the single pile and the suction cylinder and suction cylinder negative pressure sinking, the inclination of the suction cylinder is monitored in the sinking period, leveling is conducted in time through a suction system, the problems of large-amplitude inclination, shaking and the like are avoided, and the problems that single pile rock-socketed construction is large in difficulty, long in construction period and high in cost are solved.

The invention provides a method of constructing a shallow tunnel underground passage variable-cross section cross mid-partition wall. The method is characterized by comprising the following steps of 1) dividing a first cross section of a passage into a plurality of guide holes along a tunneling direction; 2) finishing primary supporting for the first cross section to the third cross section by the CRD method; 3) dividing a fourth cross section into a plurality of guide holes; 4) respectively replacing the supporting of each temporary inverted arch surface of the upper layer, the middle layer and the lower layer among the second cross section to the fourth cross section with new temporary inverted arches; 5) paving and firmly welding longitudinal reinforcing steel bars on the third new temporary inverted arch surface according to requirements; 6) finishing underground passage primary supporting for the fourth cross section to the fifth cross section by the CRD method by taking the two new temporary inverted arch surfaces of the middle layer and the lower layer as construction walking passages; and 7) detaching the temporary inverted arch supports section by section, and meanwhile lining the underground passage for the second time section by section, so that the main body structure is formed. Due to the fact that the procedure conversion of variable-cross section passage support change is adopted, the CRD method can be used for continuously operation according to the requirements all the way, the cost can be saved, and the efficiency is improved.

A construction method of sludge soil texture deep foundation pit excavation and pumping sand compacted backfilling comprises the following steps: first, measuring and positioning are conducted; second, a small foundation pit is artificially excavated in the middle of a deep foundation pit to be excavated; third, a suspension type sewage pump used for draining slurry is placed in the small foundation pit; fourth, deep foundation pit excavation construction is carried out; fifth, after the deep foundation pit excavation construction is completed, a section chief assigns unified inspection and acceptance of the position, size and slope of the deep foundation pit to a quality inspector, a technician and a surveyor; sixth, pumping sand compacted backfilling construction is carried out. The construction method of sludge soil texture deep foundation pit excavation and pumping sand compacted backfilling is quite convenient and rapid to use, solves various adverse factors and construction problems of conventional excavation and backfilling of a pile plus sludge soil texture deep foundation pit, is applicable to excavation and backfilling of deep foundation pit engineering of all projects along the coast or in wet land mucky soil or with a high underground water level, and ensures normal construction of the engineering.

The invention relates to a bridge expansion joint structure comprising two adjacent bridge bodies (3). The upper parts of the connection ends of the two adjacent bridge bodies (3) are provided with mutually symmetric inclined planes and the lower parts are provided with vertical planes, so that a bridge expansion joint (1) formed between the two adjacent bridge bodies (3) is divided into an upper part and a lower part, wherein the cross section of the upper part is an inverse trapezoid, with wide top and narrow bottom, and the cross section of the lower part is a rectangle with identical upper and lower width; and a rubber belt (2) is embedded on the inverse trapezoid of the bridge expansion joint (1) and the section of the rubber belt (2) is in the shape of a triangular belt. Asphalt concrete (4) is directly paved on the whole bridge deck, thus the rubber belt (2) of the bridge expansion joint is closely connected with the asphalt concrete (4) on the bridge deck into a whole. The side wall of the rubber belt (2) is provided with a plurality of pores (2.1) and the surface of the rubber belt (2) is provided with a plurality of small convex columns (2.2). The structure can slow down premature damage of the bridge expansion joint, prolong the service life, ensure the vehicles to pass safely, smoothly and swiftly, simultaneously lower the maintenance cost, save the raw materials and accelerate the construction progress.

The invention relates to the technical field of a transformer station used for power supply and distribution, particularly relates to a shielding ball holing position positioning method and positioning device, and aims at solving problems of high project field construction difficulty, low construction efficiency and high project cost caused by the fact that a holing position is accurately found after multiple times of testing in field installation of shielding balls. In order to solve the problems, the invention provides the simple positioning method. In order to implement the method, the invention provides the preferable positioning device. The positioning device comprises positioning covers which comprise positioning surfaces of which the central axes constantly pass through the centers of spheres of the shielding balls. Internal diameter of the positioning surfaces is identical to diameter of a tubular bus requiring installation. The positioning covers are fixedly provided with pointing devices of which extension direction is overlapped with the central axes of the positioning surfaces. In field installation of the shielding balls, the two positioning covers arranged on the surfaces of the two shielding balls are moved and the two pointing devices are enabled to point to one straight line so that the position of the positioning surfaces is the position requiring holing.

The invention relates to bracket structures for heat distribution pipelines in a utility tunnel and a construction method of the bracket structures. The bracket structures comprise stand columns which are arranged on the two sides of the heat distribution pipelines in a clamping mode and vertically arranged between a top plate and a base plate of the utility tunnel. The tops of the stand columns are embedded into the top plate to form first anchor-connecting sections, and the bottoms of the stand columns are embedded into the base plate to form second anchor-connecting sections. The heat distribution pipelines are fixed and supported through the stand columns arranged on the two sides of the heat distribution pipelines in the clamping mode, the tops of the stand columns are embedded into the top plate of the utility tunnel, the bottoms of the stand columns are embedded into the base plate of the utility tunnel, therefore the stand columns can effectively transmit longitudinal thrust of the heat distribution pipelines to the structure of the utility tunnel, and the thrust of the heat distribution pipelines is unloaded while the heat distribution pipelines are fixed. The utility tunnel and the earth form an integrated stress structure, the rigidity of the utility tunnel can be simplified to be infinite in the longitudinal section, and therefore a closed force transmission ring transmitting pressure of the heat distribution pipelines to the earth is formed, and the structural stability and safety can be ensured.

The invention discloses an LED (light-emitting diode) street lamp low temperature environment aging room. The LED street lamp low temperature environment aging room comprises an aging room body, an air-circulating channel which is used for continually circulating to introduce cold air to an aging region in the aging room body, a controller and multiple temperature-detecting devices, wherein the air-circulating channel comprises a low temperature exchanger, a low temperature compressor, a fan, a cold air inlet channel, and an air return channel, wherein the low temperature exchanger is arranged above the middle of the aging room body, the low temperature compressor is connected with a low temperature exchanger, the cold air inlet channel is used for leading cooling draft acquired by the low temperature exchanger after low temperature exchange to successively introduce the aging region through multiple cold air inlets, the air return channel is used for absorbing air in the aging region under the action of the fan to the side of the low temperature exchanger so as to carry out low temperature exchange through multiple air return ports, and the cold air inlet channel is communicated with the air return channel through a communicating pipe. The low temperature environment aging room provided by the invention has the advantages of simple structure, is easy to operate, is low in cost and has good using effects, and can be used for effectively solving a temperature maldistribution problem in the aging region through adjusting the refrigeration states of the low temperature exchanger and the low temperature compressor and the shutter states of air inlets and the air return ports.

The invention discloses a construction method for decomposing a grading high-rise pile cap. A pipe (1) based on a decomposer is constructed up to the ground elevation of a bearing platform at a time. The bearing platform (2) of the pile foundation is constructed in advance before secondary backfill is made, and then back fill (3) under the ground elevation of field plating is treated. The method has simple configuration, low cost, easy implementation, can solve greatly construction difficulty when being applied to aluminium industry fractional decomposition, shortens duration of a project, and reduces the investment.

The application provides a supporting truss capable of being recycled, a foundation pit supporting system and a subway station construction method. The supporting truss is used in the foundation pit supporting system of a construction subway station and comprises two chord members and a web member, the two chord members are arranged at interval and in an up and down mode, and the two ends of eachchord member are detachably connected to an enclosure body of the foundation pit supporting system; and the web member is connected between the upper chord member and the lower chord member. Accordingto the supporting truss, the supporting truss is spliced by using the prefabricated chord members and the web member, so that the construction process of cast-in-place concrete forming of the supporting truss is omitted, after the supporting work is completed, direct detaching can be conducted, the construction difficulty of the supporting truss is reduced accordingly, and meanwhile, the construction period is also shortened.

The invention discloses a protective shed structure for a continuous girder crossing an on-active-duty highway and a construction method of the protective shed structure. The protective shed structure comprises strip-shaped bases, stand columns and transverse load distributing girders, wherein the stand columns are fixedly arranged on the strip-shaped bases, and the transverse load distributing girders are set up on the stand columns; a set of longitudinal load distributing girders are arranged on each transverse load distributing girder, a waterproof board is arranged above the longitudinal load distributing girders, and steel pipe piles are fixedly arranged on the positions, at the two sides of the transverse load distributing girders, of the ground; and hawsers are arranged on the steel pipe piles, one ends of the hawsers are fixedly connected with the steel pipe piles, and the other ends of the hawsers are fixedly connected with the tops of the corresponding stand columns at the two sides of the transverse load distributing girders. The protective shed structure has the following characteristics and beneficial effects that the problem of large construction difficulty is solved by integrally hoisting and splicing the bases, the transverse girders and a longitudinal girder top layer, the problem of a high requirement for a safety factor is solved by building auxiliary facilities, and relatively good technical and economical benefits are achieved; and the transverse girders are removed by adopting the method of traction hoisting, and therefore the removing difficulty is reduced.

The invention discloses a preparation method for baseboard of main pipe and sluice and step-style construction joint for side wall of flow channel layer. Under the circumstance that the flow channel layer is the special-shaped structure of gradient section and with the adoption of floor pouring technique, the height of the side wall of flow channel layer within two thirds of the width of the outboard of side wall is about 0.5m. The improved section of the side wall of flow channel layer is segmented by adopting overhanging model. By means of welding, a sealing plate is connected with a reticulate frame. After the floor pouring process is finished, the formed faulting is used as the stress release channel for the side wall of flow channel layer. The preparation method for baseboard of mainpipe and sluice and step-style construction joint for side wall of flow channel layer can reduce the difficulty in constructing baseboard, enlarge the pouring space of concrete base slab and improve the managing and controlling level and quality of the floor pouring of concrete base slab. The preparation method for baseboard of main pipe and sluice and step-style construction joint for side wall of flow channel layer can use the formed faulting in the floor pouring section as the release channel for the side wall of flow channel layer to reduce the restriction of the baseboard on the flow channel layer, which is beneficial to control the cracks caused by the temperature of concrete on the side wall of flow channel layer. The sealing plate, together with the floor pouring section, has a good water proofing effect. In one word, the preparation method for baseboard of main pipe and sluice and step-style construction joint for side wall of flow channel layer can obviously save the time forconstruction and accelerate the process of construction.

The invention relates to a hoisting method of large support equipment, and particularly to a hoisting method of large support equipment for a basement, solving the problem of large construction difficulty caused by incapability of directly conveying the existing large support equipment to a basement house. The hoisting method of the large support equipment for the basement comprises the following steps of: arranging a hoisting hole in the top of the basement house; placing a plurality of upper channel steels on an aboveground second-layer floor of a ground floor, selecting a hoisting point on the aboveground second-layer floor and drilling a hoisting hole; fixing one end of a guide chain on the top of the large support equipment near the hoisting hole and enabling the other end of the guide chain to pass through the hoisting hole; pulling the other end of the guide chain so as to hoist the large support equipment until the large support equipment is set right; and dismantling lower channel steels, and loosening the other end of the guide chain to ensure that the large support equipment downwards moves until the hoisting hole falls the basement house to be in place. The hoisting method provided by the invention is simple to operate, and can be widely applicable to hoisting of the large support equipment of the basement.

The invention provides a single-pile foundation for offshore wind power and a construction method thereof. The single-pile foundation comprises a single-pile foundation body, and the bottom of the single-pile foundation body is of a tree-root-shaped structure; the structure can meet the requirements of safety and stability without increasing the depth of the pile foundation; and the problems that the construction cost and the construction difficulty are obviously increased due to continuous increase of the depth of the offshore wind power single-pile foundation in the future are solved.

The invention discloses an uplift pile construction method without rock blasting which comprises the construction processes of burying a reaction frame of an orifice section, extracting rock cores of the orifice section in a layering manner, and cleaning and chiseling the rock surfaces of the orifice section; erecting a reaction frame of a standard section, extracting rock cores of the standard section in a layering manner, and cleaning and chiseling the rock surfaces of the standard section; erecting a reaction frame of an expanding section, extracting rock cores of the expanding section in a layering manner, and cleaning and chiseling the rock surfaces of the expanding section, and the like. The beneficial effects of the method is that the whole construction work of the orifice section, the standard section and the expanding section can be completed and the big difficulty in expanding section construction is overcome; the speed is fast and the average excavation construction speed of the whole rock stratum can reach 1.2m per day; machinery automation is high; the universality is high; the operation is convenient; the safety, energy conservation and environment protection are realized.

The invention discloses a pile-sinking construction method for a deep riprap unfavorable geologic region, and the pile-sinking construction method firstly performs earthwork replacing operation of a vertical enclosure structure area, and performs vertical pile construction or steel plate pile enclosure structure construction in an area in which replacement is completed. The pile-sinking construction method is characterized in that the earthwork replacing operation comprises the following steps: (1) measuring, paying off and positioning; (2) defining one group by a plurality of pile tubes which are arranged in parallel and are provided with movable pile tips, and performing pipe-sinking construction; (3) backfilling fine grained soil into one group of immersed tubes which are constructed; (4) after earthwork backfilling is completed, reserving the last pile tube as the first one of a next group, pulling off the rest of the pile tubes, thereby forming a cob wall; and (5) repeating steps (2) to (4), and performing pipe-sinking backfilling operation of the next group of pile pipes until earthwork of the vertical enclosure structure area is replaced. The pile-sinking construction method is convenient in construction, is high in pile sinking efficiency, is low in construction cost, and can strength the water-stop effect of the vertical enclosure structure.

The invention provides a street lamp connecting structure. The street lamp connecting structure comprises a street lamp main wire harness which is arranged along a road, and a street lamp post branch which is connected to the street lamp main wire harness and extends into a middle cavity of the street lamp post. According to the technical scheme adopted by the invention, the street lamp main wire harness is paved along the road, and the street lamp post branch is connected to the street lamp main wire harness and extends into the middle cavity of the street lamp post to supply power for the street lamp, so that a joint is prevented from forming in the street lamp post. Therefore, the problems of narrow street lamp post space and difficulty in enabling a cable to enter the street lamp post to construct in the prior art are solved.