61results about How to "Reduce the impact of construction" patented technology

The invention discloses a hoisting device of an offshore wind turbine installation platform, comprising a hoisting boom and a derricking wire rope, wherein the root of the hoisting boom is hinged with a platform body of the offshore wind turbine installation platform and the tail end of the hoisting boom is connected with the derricking wire rope fixedly. The hoisting device further comprises a guide frame, wherein a wind turbine holding mechanism is arranged at the tail end of the guide frame and the tail end of the hoisting boom is hinged with the guide frame; a balance arm in parallel with the hoisting boom is arranged at one side of the guide frame, which is far away from the hoisting boom, and the hoisting boom is equal to the balance arm in length; a transverse beam in parallel with the platform body is arranged on the guide frame fixedly, the root of the balance arm is hinged to the platform body and the tail end of the balance arm is hinged to the transverse beam. According to the invention, a wind turbine can be always kept in an upright state without other auxiliary ship drawing, so positioning difficulty of the wind turbine is reduced and even big sea stormy waves cannot affect the installation of the wind turbine much, thus an offshore environment affects the construction less. The invention also discloses the offshore wind turbine installation platform provided with the hoisting device.

The invention relates to a cleaning type muddy water pipe extending device based on a three-way valve. The cleaning type muddy water pipe extending device comprises a pipe connector trolley, the three-way reversing valve is arranged on the pipe connector trolley, a joint of the three-way reversing valve is communicated with a water supply pipe, a first muddy water pipe segment of a shield tunneling machine and a second muddy water pipe segment of the shield tunneling machine; the first muddy water pipe segment comprises a muddy water pipe fixing pipe segment and a muddy water pipe walking pipe segment which walks along with the pipe connector trolley, and the muddy water pipe fixing pipe segment and the muddy water pipe walking pipe segment are connected; the muddy water pipe walking pipe segment is connected with the joint of the three-way reversing valve, and a cleaning moving plug is arranged in a pipe cavity of the water supply pipe; under the water pressure effect, the cleaning moving plug enters the muddy water pipe fixing pipe segment through the three-way reversing valve; and a plug passing indicator which is used for reminding whether the cleaning moving plug passes through and enters the muddy water pipe fixing pipe segment or not is arranged on the first muddy water pipe segment. According to the device, the phenomenon that during pipe connecting of the shield tunneling machine, muddy water in a muddy water pipe is directly drained to the construction site can be avoided, the influence of muddy water on construction inside a tunnel is reduced, the clean and environment-friendly use effect is achieved, and the device is simple in structure, and pipe-connecting use is convenient.

The invention discloses a combined stringing tool used for line conductor stringing. The combined stringing tool comprises a fixed pulley, a first stringing tackle, a second stringing tackle, a winching, a haulage cable, a tackle fixing plate and a ball head line clamping device. The fixed pulley is fixed to the top end of a tower. The tackle fixing plate is fixed to a cross arm of the tower. The second stringing tackle is fixed to the tackle fixing plate. The first stringing tackle is fixed at the bottom end of the tower. The winching is fixed to the ground. The haulage cable is wound around the winching. The haulage cable which is drawn out from the winching is sequentially wound around the first stringing tackle, the fixed pulley and the second stringing tackle, and then is fastened up to the ball head line clamping device. In the stringing process, a line conductor can be strung as long as the winching is rotated to pull the haulage cable. The combined stringing tool has the advantages of being capable of improving safety and reliability of electric transmission line conductor stringing, improving stringing efficiency and lowering labor intensity of workers on the tower, reducing the number of the workers, being low in construction difficulty and the like.

The invention discloses a sandwich sinking pipe connector and a production method thereof. The sinking pipe connector comprises an annular steel structure shell composed of a bottom plate, a top plateand side walls connected between the bottom plate and the top plate, the shell is internally provided with a plurality of longitudinal partition plates and transverse partition plates, and all the transverse partition plates and longitudinal partition plates partition the shell into a plurality of mutually-independent compartment units. Each compartment unit is further internally provided with aplurality of stiffening plates and filled with concrete. According to the sandwich sinking pipe connector, in the adopted steel structure shell, the stiffening plates can be in rigid connection with the compartment units in longitudinal and transverse directions, and when each compartment unit is cast again, it is ensured that a shell body and the filled concrete deform jointly, so that the situation that slippage occurs between the bottom plate and the concrete interface, the top plate and the concrete interface as well as the side walls and the concrete interface is prevented, and thus the rigidity and the strength of the sinking pipe connector are ensured so as to adapt to the seabed sinking pipe requirement; and forming is achieved at a time, subsequent maintenance can be omitted, theusing requirement for 120-year durability can be met, and stability is good.

The invention discloses an open caisson construction method. Through the open caisson construction method, the ground work face is reduced, and the influence of the weather on the construction is reduced; the manner that a well wall inner formwork and a well wall outer formwork sink into the ground along with a concrete well wall is used, so that form stripping is avoided, and well bore quality is ensured; a soil taking and well bore pouring synchronization manner is adopted, so that construction efficiency is improved; a steel pipe pile is taken as the guidance, so that construction quality is ensured, and therefore the problems of large workload caused by repeated dismounting and mounting of a scaffold and a formwork, large construction area, high requirement on construction safety, long construction period, no guide measures and having difficulty in ensuring engineering quality in the prior art are solved; and the aims of improving the construction efficiency, ensuring construction quality and ensuring construction safety are achieved.

The invention discloses a super high-rise building deep foundation pit and a construction method thereof, relates to a foundation pit and aims to solve the technical problem in the prior art that water is prone to permeating into the foundation pit. The super high-rise building deep foundation pit and the construction method thereof are characterized in that the super high-rise building deep foundation pit comprises a pit body arranged in a soil body and a plurality of continuous walls arranged at the outer edge of the pit body in a surrounding manner, a plurality of supporting protecting piles arranged on the sides, close to the pit body, of the continuous walls and supporting components for supporting the supporting protecting piles, wherein the pit body is internally provided with vertical column components for fixing the supporting components, and the multiple supporting protecting piles are arranged in the circumferential directions of the continuous walls; when construction is performed, the continuous walls are cast and the supporting protecting piles are hit in, then the pit body is excavated, then the vertical column components and the supporting components are fabricated,so that the supporting protecting piles are supported, and the possibility of foundation pit collapse can be reduced; and by means of two-layer protection of the continuous walls and the supporting protecting piles, groundwater permeating into the foundation pit from positions between the continuous walls and the positions between the supporting protecting piles can be reduced, and reduction of construction influence of the permeating water on the foundation pit is facilitated.

The invention discloses a rapid construction method of a continuous rigid frame bridge, which comprises the following steps of: (1) constructing a bridge lower substructure, (2) moving a bridge erecting machine, temporarily anchoring supporting legs of the bridge erecting machine at the pier top of a pier, and sequentially hoisting all prefabricated girder sections in the ith span according to a segmental girder assembly sequence, staggering the prefabricated girder sections up and down in close rows and hang the prefabricated girder sections in an assembly preparation area on the right side of the i-th span, (3) installing a first prefabricated girder section; (4) installing subsequent girder sections; (5) assembling a whole-span segmental beam; (6) tensioning a positive bending moment beam in beam bottom plates of the prefabricated girder sections; (7) completing the construction of a next span segmental beam, and casting a pier top wet connection seam, (8) completing the construction of other spans of the coupled beam bridge; (9) tensioning the hogging moment beam in the beam top plate of the precast beam section in the coupled beam bridge; and (10) completing the construction of other coupled beams of the beam bridge. According to the method, through the processes of whole-hole segment assembling, pier top secondary pouring and the like, the material consumption and the construction cost are reduced; and prestressed tendons are stretched after the secondary pouring of the pier top is completed, the waiting time of the bridge erecting machine is shortened, and the construction progress is accelerated.

The invention discloses a macroscopic method capable of distinguishing expansibility grade of soil mass during construction. The method is characterized in that before project implementation, a representative sample in a work area is selected and is subjected to an indoor test of a free swelling ratio, the relation among the expansibility, the lithological character, the soil mass structure, colors, crack development characteristics and the like is established, and the accuracy and the scientificity of on-site rapid distinguishing are realized; a macrocontrol index for rapid distinguishing of the expansibility grade of the soil mass is selected, and classified description and research of a control index are carried out; a soil mass expansibility distinguishing model is established, the weight of each influence factor is determined, besides, an indoor verification test is carried out, and the reliability of the model and the accuracy of the test are improved; rapid distinguishing work of the expansibility grade of the soil mass in the work area is performed on site according to the soil mass expansibility distinguishing model. The defects that a treatment scheme and treatment strength cannot be adjusted timely in the implementation process of a project according to the expansibility grade in the prior art are overcome, and the method has the advantages of capability of rapidly distinguishing expansive soil in the on-site construction process.

The invention relates to the technical field of an artificial turf, in particular to production equipment and a construction method of a soil matrix artificial turf. The defects of influence of the construction site, high labor intensity, low construction efficiency and the like exist in pavement of the existing soil matrix artificial turf. According to the technical scheme of the invention, the production equipment comprises a power device, a control device, a rail, a main machine frame as well as a cuttage mechanism, a stepping mechanism and a shredding mechanism which are arranged on the main machine frame. Grass shred cuttage is finished mechanically beside the pavement site or in a processing plant, and standard blocky mud blanks are produced and are conveyed to the site to be spliced and combined, so the influence of the terrain and the ground feature of the pavement site on the construction is reduced, the on-site construction steps are simplified, and the pavement efficiency and the construction quality of the soil matrix artificial turf are greatly improved.

The invention relates to a repairing coating, solving the problem that an ordinary repairing method is low in on-site repairing quality. The repairing coating comprises base stock and a curing agent, wherein the base stock mainly comprises the following ingredients: liquid state bisphenol A, F epoxy resin, thixotropic agent, toughening agent, filler, pigment and the like; a liquid state amine type curing agent is used as the curing agent, and the use proportioning of the base stock and the curing agent is 100:23. The repairing coating is used for repairing pipes; the combination strength of a combination plane of the repairing material and a 3PE (Poly Ethylene) erosion resistant layer of a pipeline main body can meet the requirements on repairing standard of a 3PE pipeline; and moreover, the on-site engineering process is simple, the mechanization can be realized, the influence of artificial and environment factors on the engineering is reduced, and the repairing coating can be brushed and coated at low temperature of -5 DEG C.

The invention discloses an inclinometry robot. The inclinometry robot comprises an inclinometry pipe, an inclinometry part and a driving device, the inclinometry pipe comprises an underground pipe anda steering pipe which are communicated with each other, wherein an outer sleeve is sleeved outside the steering pipe; the inclinometry part comprises an inclinometer, the inclinometer comprises a protective tube and an inclinometry assembly, and rollers are installed outside the protective tube; a first guide groove is formed in the underground pipe, and a second guide groove is formed in the steering pipe; when the steering pipe rotates by 180 degrees, the roller can still enter the second guide groove along the first guide groove; the driving device comprises a lifting part and a steering part; the lifting part comprises a winch, a guide wheel and a first motor; a traction rope on the winch is connected to the protection pipe through a guide wheel; and a steering part comprises a secondmotor. The invention further discloses an inclination measuring method. According to the application, the measuring point can be accurately positioned, so the inclinometer can be detected at the determined height position, the inclinometer can accurately complete 180-degree steering, and a guarantee is provided for accurate measurement of the inclination.

The invention discloses an embedded track system. The embedded track system comprises a base, a prefabricated track plate and steel rails, and two rail support grooves whose bottom portions have gradients are arranged in parallel corresponding to the width of a train wheel pair on the prefabricated track plate; in the rail support grooves, elastic cushion plates are firstly continuously laid, then height adjusting backing plates whose bottom portions also having the same gradients as the bottom portions of the rail support grooves are arranged in a discretely mode, and then the steel rails are arranged in the grooves; prefabricated sections are adhered to the two sides of each steel rail, and wedge blocks are arranged between the prefabricated sections and the walls of the rail support grooves for adjusting transverse positions of the steel rails; high-molecular castables are cast in the rail support grooves for filling residual space; and an adjustment layer is formed through cast-in-situ concrete for combining the prefabricated track plate with the base. The embedded track system has the following advantages: the construction cycle of a track line is shortened, and the construction quality is effectively guaranteed; vibration and noise are low; and the service life of the track line is longer.

The invention discloses a tunnel ahead and station following underground excavation station duct piece dismantling construction method and a duct piece dismantling tool adopted by the same, and aims to solve the technical problems that the existing duct piece dismantling construction method is large in operating risk and the dismantled duct piece is damaged and cannot be repeatedly used. The tunnel ahead and station following underground excavation station duct piece dismantling construction method comprises the following steps: 1, carrying out full-ring grouting on the duct piece at a port position; 2, reinforcing the duct piece at the port position; and 3, after excavating earthwork on the top of the tunnel, utilizing the duct piece dismantling tool to dismantle the duct piece at the port position. The duct piece dismantling tool comprises a trailer frame, a duct piece assembling machine and an assembling machine power system. The duct piece dismantling tool does not need to damage the duct piece, slowly dismantles the duct piece through the assembling machine after dismantling a duct piece bolt, transports the duct piece to a duct piece trolley, and does not damage the duct piece when the duct piece is dismantled in sequence to avoid damage to the duct piece.

The invention discloses a tunnel excavating device, and relates to the technical field of tunnel construction. The tunnel excavating device comprises an excavator. A plurality of universal wheels are arranged on the bottom of a bottom plate. The bottom plate is provided with a water tank, the water tank is provided with an opening, a first motor and a hydraulic pump are arranged on one side of the water tank, and a movable power source is arranged on one side of the first motor. A first water pipe is arranged between a liquid inlet of the hydraulic pump and the opening of the water tank. A second water pipe is arranged at the position of a liquid outlet of the hydraulic pump, and the end, far away from the liquid outlet, of the second water pipe is provided with a spray head. A conveying device is arranged on one side of the hydraulic pump, and a material collection tank is arranged on one side of the conveying device. A protection cover is arranged above the bottom plate, and the two side walls of the protection cover are fixedly connected with the two side walls of the bottom plate. The tunnel excavating device has the beneficial effects that the tunnel excavating device conveniently conducts dedusting on excavated soil blocks and can also move out the soil blocks which are excavated by the excavator in time, the construction time is shortened, and the excavating efficiency is improved.

The invention discloses a steel shell type reinforced concrete water colleting well structure of a soft soil foundation pump station and a construction method of the steel shell type reinforced concrete water colleting well structure. A steel plate is adopted as a water collecting well wall outer fa ade template and meanwhile serves as a permanent water collecting well outer wall, after the watercollecting well outer wall steel template sinks, water collecting well perpendicular foundation pit excavating is conducted, after excavating is completed and a plain concrete cushion is poured, the reinforced concrete well wall on the inner side of the water colleting well outer wall steel template, a well bottom plate and a pump station bottom plate steel bar are bound synchronously, concrete synchronous pouring is conducted, and an overall structure is formed. By means of the steel shell type reinforced concrete water colleting well structure of the soft soil foundation pump station and theconstruction method of the steel shell type reinforced concrete water colleting well structure, large-area slope excavating and foundation pit water falling can be avoided, and the construction difficulty is lowered; the influences of water collecting well construction on pump station bottom plate construction are reduced, and the overall construction speed of the engineering is improved; and earth excavation and the use amount of water collecting well reinforced concrete are reduced, and the investment is saved.

The invention discloses vinyl ester resin and a preparation method thereof, belongs to the technical field of high molecular materials, and provides a technical scheme, that is, vinyl ester resin which can be cured under a certain damp condition, for solving the problem that the conventional vinyl ester resin is greatly affected by moisture in the curing process. A compound with an epoxy resin structure generates ring opening polymerization reaction with unsaturated monocarboxylic acid and the generated product is diluted in a reaction type diluent to generate vinyl ester resin. The curing degree of the resin under the damp environment condition is increased, a novel solution to application of the vinyl ester resin to anti-corrosion construction in a damp environment is provided, the influence of the environment factor on construction is reduced, the construction period is shortened, and the construction efficiency is improved.

The invention relates to a construction method of an auxiliary platform. The auxiliary platform is installed beside a fan bearing platform, the construction method comprises the steps that firstly, jackets are fabricated and assembled into a whole, and then the jackets are hoisted; secondly, four auxiliary piles are vertically inserted at four corner points of each jacket, and the four auxiliary piles are fixed in the corresponding jacket; and finally, the remained auxiliary piles are hoisted and piled, and the remained auxiliary piles are fixed on sleeves of the corresponding jacket. The construction method of the auxiliary platform is simple in construction procedure, and influence of wind and waves on construction of the fan bearing platform is effectively reduced, and the working efficiency of construction of the bearing platform is improved.

The invention discloses a power transmission line crossing construction method based on unmanned aerial vehicle modeling and a BIM technology. The method comprises the following steps: making a kml file according to the design and retest data in the initial stage of a project, and agreeing and determining a preliminary construction scheme in combination with a site survey condition; the RTK unmanned aerial vehicle is used for carrying out oblique photography route planning and live-action collection on the crossing site; a site-crossing refined three-dimensional model is generated by means of big Xinjiang intelligent graph software and intelligent 3D software; on the basis of the BIM technology, models such as an iron tower, a crossing frame and a blocking net are built and fused with the on-site three-dimensional model; carrying out a collision test, and optimizing the layout and the construction process; a BIM model dynamic demonstration function is utilized, a time axis is inserted according to a construction progress plan, and a BIM dynamic model is manufactured to carry out crossing scheme rehearsal and safety technical disclosure. According to the invention, the high-speed railway and the expressway can be regarded as an integral spanned object for simultaneous spanning construction, and the problems of site limitation and repeated entry and exit of personnel during respective spanning are solved.

The invention provides a cableway pipe installation method which comprises the following steps: carrying out lofting on a stiff framework according to design coordinates, and welding a temporary support and a limiting stopper through angle steel; hoisting a cableway pipe to a mounting position, and pre-fixing and locating the cableway pipe; measuring the coordinates of the upper and lower outlet points of the cableway pipe for multiple times, and repeatedly adjusting the spatial position of the cableway pipe to reach the position of the designed coordinates; and after positioning is completed, fixing the cableway pipe to the stiff framework in a spot welding mode. According to the invention, the positioning principle of a three-dimensional space straight line is applied, the position path of the space straight line can be determined only by measuring the position paths of the two points on the straight line, the positioning method is rapid and simple, complex equipment and positioning calculation are not needed, the positioning precision is high, positioning and mounting of the cableway pipe are facilitated, and the influence on follow-up stay cable construction is reduced.

The invention relates to a construction method applied to split installation of offshore wind power generators. A wind power generator is located on a bearing platform of a fan foundation and comprises a tower frame and a fan located at the upper part of the tower frame. An auxiliary platform is used for lifting the wind power generator on the fan foundation, so that the split installation of the wind power generator is achieved. Through the construction method, the auxiliary platform is used for achieving split installation of the fan; the influence of the wind wave on the installation construction of the fan is effectively reduced; the installation efficiency is improved.

The invention relates to a construction method for a slab rib type cast-in-situ anchor high retaining wall, comprising the steps of: 1) construction preparation; 2) slope soil slope treatment; 3) construction work platform erection; 4) interface reinforcement board laying; ) Wall inner formwork and wall back external formwork support; 6) Retaining wall rib concrete pouring; 7) Wall back filling body construction. The beneficial effects of the present invention are: the present invention provides support for the hanging horizontal plate through the support vertical rod and the top support beam respectively, which reduces the difficulty of cantilever support for the hanging horizontal plate; at the same time, the present invention adopts an assembled bottom plate and a support shoe The cap defines the position of the stand pole, which reduces the difficulty of laying the stand pole and improves the quality of the stand pole arrangement; the present invention is provided with a first hanging basket and a second hanging basket, and the first hanging basket can be limited by the position control cable. The heights of the hanging baskets and the second hanging baskets define the lateral positions of the first hanging baskets and the second hanging baskets through the connecting grooves of the slide rails, which reduces the difficulty of arranging the first hanging baskets and the second hanging baskets.

The invention discloses a super-heavy overhanging suspension member supporting system of a super high-rise residential building conversion layer and a construction method of the super-heavy overhanging suspension member supporting system. According to the method, a reinforced load-bearing steel pipe column, a steel box beam bracket, a bailey frame, an I-beam distribution beam and a dense type steel pipe fastener type supporting frame constitute the suspension member supporting system. The member load is evenly transmitted to a cantilevered steel platform through the dense type steel pipe fastener type supporting frame, and the size of the steel platform can be flexibly designed to meet the requirements according to the actual load, span and overhanging length on site. Fewer materials are used and can be used in a recycling mode, no requirement for the bearing capacity of a lower horizontal structure exists, and the impact on construction of surrounding podium buildings and undergroundstructure areas is reduced. The construction process is safe and reliable, green and environmentally friendly, the popularization rate is high, and the super-heavy external overhanging suspension member supporting system is very suitable for construction tasks similar to super-heavy external overhanging suspension members.

The invention discloses an aqueous double-component matte wood paint and a preparation method thereof. The paint comprises an agent A and an agent B, wherein the ratio of the agent A to the agent B is3:1 in a weight ratio; the agent A comprises 60-80 parts of an aqueous high-gloss high-fullness hydroxy acrylic resin, 10-40 parts of an aqueous matte hydroxy acrylic resin, 0.5-1.5 parts of an aqueous dispersant, 0.6-3 parts of an aqueous thixotropic agent, 0.2-0.6 part of an aqueous defoaming agent, 3-6 parts of deionized water, 2-6 parts of gloss-enhanced aids, 2-9 parts of filming aids, 0-2 parts of aqueous matte slurry, 0.5-2 parts of aqueous hgih0gloss transparent wax slurry, 0.5-1 part of an aqueous wetting leveling agent, 0.1-0.5 part of an aqueous leveling agent, 0.4-0.6 part of an amine neutralizing agent and 0.2-1 part of an aqueous thickening agent. The paint is applicable to all-day construction and is capable of reducing sagging phenomena and ensuring stable gloss. In addition, the paint is good in transparency, clear in wood pattern and applique, high in hardness, good in hand feeling, good in wearing resistance and good in flicking and developing property.

The invention discloses an open caisson construction method. Through the open caisson construction method, the ground work face is reduced, and the influence of the weather on the construction is reduced; the manner that a well wall inner formwork and a well wall outer formwork sink into the ground along with a concrete well wall is used, so that form stripping is avoided, and well bore quality is ensured; a soil taking and well bore pouring synchronization manner is adopted, so that construction efficiency is improved; a steel pipe pile is taken as the guidance, so that construction quality is ensured, and therefore the problems of large workload caused by repeated dismounting and mounting of a scaffold and a formwork, large construction area, high requirement on construction safety, long construction period, no guide measures and having difficulty in ensuring engineering quality in the prior art are solved; and the aims of improving the construction efficiency, ensuring construction quality and ensuring construction safety are achieved.

The invention relates to an assembled pier transporting and erecting all-in-one machine and an assembled pier transporting and erecting method based on the same. The transporting and erecting all-in-one machine comprises a pier section transporting vehicle, two main beams and a pier section hoisting crown block, wherein the pier section transporting vehicle is a all-in-one rubber-tyred hydraulic transport flatcar; the two main beams are fixedly arranged on the pier section transporting vehicle in parallel, and the front ends of the main beams extend out of the pier section transporting vehicleand are suspended on the pier section transporting vehicle; a space for placing a pier assembly to be assembled is reserved between the two main beams; the pier section hoisting crown block can longitudinally run and move along a track on the top surface of the main beam and is used for hoisting and lowering the pier assembly to be assembled. The invention further provides an assembled pier transporting and erecting method based on the transporting and erecting all-in-one machine.

The present invention discloses an overlong bolt pile and a construction method thereof. The overlong bolt pile is characterized in that N bolt pile units form an N-stage overlong bolt pile (N is a natural number greater than 2). The first-stage bolt pile unit is the bottommost stage of the overlong bolt pile, and the N-th stage bolt pile is the topmost stage of the overlong bolt pile. The overlong bolt pile is orderly divided into the N-th stage, the (N-1)th stage,..., the second stage, and the first stage from top to bottom. Each stage of bolt pile unit is an inverted truncated cone, and the smaller-diameter bottom surface of the bolt unit is a bottom surface I of the truncated cone. The larger-diameter bottom surface of the bolt unit is a bottom surface II of the truncated cone, and a blind hole is formed in the bottom surface II. The blind hole which is a truncated cone-shaped hole is coaxial with the bolt pile unit. Internal threads are formed on the wall of the blind hole. A pile tip is connected to the bottom surface I of the first-stage bolt pile unit, and external threads are formed on the outer surface of the bolt pile unit. The overlong bolt pile is composed of short piles and thus convenient to transport. The short piles are provided with threaded joints to achieve firm connection.

The invention discloses a draining and recharging device for weathered rock fissure water and a construction method thereof, and belongs to the field of deep foundation pit underground water treatment technology construction. The draining and recharging device comprises a foundation pit, weathered rock is arranged in the foundation pit, a mounting cavity is formed in the weathered rock, a water collecting tank is mounted in the mounting cavity, a floating ball piece is mounted in the water collecting tank, a vacuum pump and a water suction pump are mounted on the water collecting tank, and the vacuum pump and the water suction pump both communicate with the water collecting tank; the vacuum pump is suitable for pumping fissure water in the weathered rock into the water collecting tank, a drainage ditch is formed between the water collecting tank and the inner wall of the foundation pit, and the water suction pump is suitable for communicating the drainage ditch with the water collecting tank through a water pipe.According to the draining and recharging device for the weathered rock fissure water and the construction method thereof, the technical problems that when the foundation pit is arranged on a weathered rock stratum in a coastal area, the foundation pit is prone to deformation, a supporting structure is unstable, pit bottom inrush occurs, and the fissure water in the weathered rock needs to be pumped out are solved, the structure is simple, the cost is low, manual operation is greatly reduced, and the draining and recharging effects are good.

The invention discloses a sinking and laying process of a large-diameter HDPE pipeline under a complex offshore working condition. A self-contained pile driver ship with the maximum hoisting weight of200t is used for hoisting the large-diameter HDPE pipeline, a truss is used for hoisting a counterweight block, the counterweight block is divided into an upper half part and a lower half part, the HDPE pipeline is fixed between the upper half part and the lower half part, and finally the HDPE pipeline is hung and laid under the sea surface to be connected. The influence of storm conditions on construction is reduced, the requirement for the construction site is reduced, the construction cost is saved, and the efficiency and the installation precision of the construction site are improved.

The invention provides an imaging system for installing an armor block of a breakwater and an application technique thereof. A three-dimensional image sonar is used for continuously scanning underwater, positioning coordinates are obtained by a positioning unit, the kinematic error is corrected by an attitude sensor, and a physical model is resolved by a computer so as to generate a three-dimensional diagram containing coordinate information and guide the installation construction of the armor block. A sonar real-time imaging technique is used for installing the underwater armor block of the breakwater, so that frequent positioning and underwater measurement and touch of divers can be omitted, a large amount of time is saved, and the safety risk is reduced; an accurate positioning result is guaranteed by self attitude correction, the influence of wind wave on construction can be effectively reduced, blocks can be accurately put and are hooked and connected with each other, the density and direction can be controlled, the installation quality of the blocks is increased, the wave resistant capability of the breakwater is guaranteed, and a crane operator can know complete information of the armor block, information asymmetry and misunderstanding from the computer in the whole installation process, so that the construction accuracy is greatly guaranteed.

The invention belongs to the technical field of pile foundation structures, and provides a secondary pile splicing construction method and a terrace structure thereof. The construction method comprises the following steps: S1, constructing a first section of pile on a construction natural ground; S2, carrying out earthwork backfilling on the construction natural ground; S3, digging out a top pilehead of the first section of pile in the earthwork backfill layer; and S4 carrying out pile splicing construction of a second section of pile at the top pile head. According to the scheme, the construction method is simple and safe and is guaranteed, the construction period can be effectively shortened, the number of times of earthwork transferring is reduced, raised dust is reduced, and the construction method is beneficial to the ecological environment.