244results about How to "Save construction cost" patented technology

The invention discloses an intelligent mobile charging automobile system and method. The system comprises a charging automobile, a large-capacity energy storage battery pack, a DC-DC direct-current converter A, a vehicle-mounted charger, a charging connection device, a charging transfer device, a ground track, a mobile phone client terminal, a scheduling center server and a charging room, wherein the scheduling center server comprises a wireless communication unit, a data receiving unit, a data processing unit and a data feedback unit; the charging automobile comprises a driving system, a whole-automobile controller, a wireless communication module, a sound-light alarm module, a tracking detection module and an obstacle avoidance detecting module. According to the intelligent mobile charging automobile system, navigation and landmark tracks are mounted and paved on the ground on the basis of the existing facilities of parking lots; the charging transfer device is mounted on the ground of the preserved charging automobile parking space; the automatic connection charging is implemented; the problem that charging stations and charging piles are inconveniently built in the existing parking lots can be solved; the system is simple and convenient; the building cost and the maintenance cost are greatly reduced; and the charging time is reduced.

The invention relates to a rapid three-dimensional mapping moulding method for ground and an underground pipe network, which comprises the following steps of: acquiring ground scene data and underground pipe data and respectively establishing three-dimensional model images of the ground and the underground pipe network; establishing the link between the ground and underground pipe network three-dimensional model images according to coordinates and storing the link into a database; carrying out rapid moulding in sections according to the moulding range of a rapid moulding machine to obtain underground pipe network sectioned distributing physical models; and splicing the sectioned distributing physical models to obtain an underground pipe network distributing physical model. The ground scene and an underground pipeline are combined and linked by the coordinates; people at different levels can vividly and visually find out the corresponding ground scene by a failure pipeline position and establish a maintenance scheme; similarly, an underground pipe network under a ground scene can be reformed and maintained; and the invention realizes the scientific management of urban infrastructure, saves the maintenance and construction cost, reduces the generating probability of accidents and improves the engineering safety degree and quality.

The invention relates to a gas self-production system used for plug removal and energy increase of an oil-water well and an application method thereof. The gas self-production system comprises, by weight, 3-10% of urea, 5-25% of a nitrite, 5-25% of an activator and 40-85% of water. The nitrite is one of sodium nitrite, ammonium nitrite and potassium nitrite. The activator is one of methyl formate, ammonium amidosulfonate, ammonium-monochloracetat, hexamethylenetetramine and formaldehyde. When the gas self-production system is used, the above materials are mixed at ambient temperature under ambient pressure, and injected into oil-bearing strata having a temperature higher than 50 DEG C, so as to remove plug, increase energy and increase enhance rate. The gas self-production system can be applied for plug removal and energy increasing of low-pressure low-energy wells in an oil field scattered reserve unit.

The invention discloses an enclosed parking lot gateway intelligent fee charging and collecting system comprising an intelligent parking box, a local server, a cloud end server and a rail. Only the intelligent parking box needs to be additionally arranged without establishment of a local area network in an existing enclosed parking lot so that construction and maintenance cost can be saved. The local server is arranged so that storage can be performed in the local server firstly and timekeeping and fee charging can be performed under the situation of network disconnection. Prepayment can be realized. If payment is provided, a signal is transmitted to a control module, a fee collecting completion instruction is transmitted from the cloud end or local and the rail is controlled to be lifted so that automatic rail lifting can be realized without queuing when a vehicle leaves the parking lot. The local server is connected with the cloud end server and used for uploading the backup and downloading synchronous updating from the cloud end in a timing way so that data are accurate and reliable, and reliable data support is provided to a mobile inducing system.

The invention discloses cast-in-situ reversed filtering type non-watertight eco-concrete and a construction method for a revetment thereof. The eco-concrete is the composition of grain aggregates and a cement hydrate; the grain aggregates comprise coarse aggregates and thin aggregates, which account for 70 to 85 percent of the total weight of the composition; the cement hydrate is the mixture of Portland cement, water and additive; the doping amount of the cement and the water accounts for 14.5 to 29.5 percent of the total weight of the composition; the additive comprises calcium salt, silicon powder, functional inorganic salt as well as lignosulphonate question mark hydroxycarboxylic acid; and the doping amount of the additive accounts for 0.1 to 0.5 percent of the total weight of the composition. The eco-concrete of the invention can realize cast-in-situ construct, and has higher anti-pressing intensity; moreover, the poriness size and the aperture distribution range can be designed and the controllability is good; the cast-in-situ reversed filtering type non-watertight eco-concrete applied to the fields of revetment protecting and controlling can improve the anti-pressing intensity, the permeable performance and the reversed filtering performance of the concrete revetment and simultaneously has the function of greening vegetation.

The invention discloses an aqueous exterior wall coating material with high solid content and low viscosity. The coating material with low viscosity and easy construction can be prepared by the following steps of: fully mixing components such as water, a dispersion stabilizer, a filler with high covering power, a wetting agent, titanium white, aqueous styrene-acrylic emulsion with high solid content, elastic acrylic acid emulsion with high solid content, a pH regulator, an antifoaming agent, a thickening agent, a film-forming additive and the like according to a certain process flow; and reasonably matching and combing the filler with high covering power and other components by fully utilizing the high solid content and high stabilizing effect of the aqueous styrene-acrylic emulsion and the high-efficiency film-forming property and weather resistance of the elastic acrylic acid emulsion. The coating material can directly achieve the construction effect during the construction of an exterior wall and can achieve the effect of high covering power without being thinned by adding water.

The invention discloses a multi-level radio network-based self-adaptive signal lamp system and a control method thereof. The system is characterized by consisting of a management terminal, a gateway electronic control unit (ECU), a signal driving test ECU, and a vehicle detecting ECU; in the invention, the gateway ECU, the signal driving test ECU, and the vehicle detecting ECU arranged at each intersection are respectively taken as a coordinator, a router and a terminal node of ZigBee network for performing network and layout; the excellent characteristics of radio sensing network, such as self-organization, multi-hop routing, etc. are kept; the integral robustness, reliability and maintainability are improved; and the construction and electrical wiring are simplified. The global system for mobile communications (GSM) interface of the gateway ECU makes the management terminal and a plurality of intersections realize a green wave band coordination control function in short message internet manner. Based on a hierarchical control system of a multi-level network structure, the system can be used for handling overall traffic flow intelligence dispersion on a large scale, and has the characteristics of capability of independent running at a single intersection and keeping system intelligence even a management terminal network system fails.

The invention discloses a bridge precast concrete member monitoring system based on a two-dimensional code and a control method thereof, belongs to the technical field of network communication and management, and aims to solve the problem of influence on the construction period due to member overstock caused by extensive management in the production, transportation, storage and installation processes of the conventional bridge precast concrete member. The process monitoring system comprises a database, an information input device, an identity card generator, a process monitoring system and an information inquiry device. The control method comprises the following steps: inputting the two-dimensional code information of a precast member; making a machining order and identity card of the precast member; inputting and storing information of a reinforcement cage machining process; inputting and storing pouring process information; inputting and storing delivery information; inputting and storing construction field material information; inputting and storing installation information. The process monitoring system and the control method are easy to operate and manage, the overstock of precast members is reduced, and the construction period and construction cost are saved.

The invention discloses a construction and manufacturing process of a total-prefabricated superimposed assembly type underground pipe gallery. A bottom plate of the underground pipe gallery is a prefabricated superimposed bottom plate. A side wall or a side wall and middle wall body is a prefabricated sandwich superimposed wall. A top plate of the underground pipe gallery is a prefabricated superimposed plate. The bottom plate, the side wall or the side wall and middle wall body and the top plate are connected in a cast-in-place manner to form the integrated underground pipe gallery. The shop prefabrication way and the superimposed cast-in-place way are combined, the advantages of the shop prefabrication way and the advantages of the cast-in-place way are fully taken, defects and deficiencies are overcome, especially the defects of low production efficiency and small transportation amount of a traditional prefabricated pipe gallery are overcome, the purposes of template-free cast-in-place construction, environmental protection, material saving, high quality and high efficiency are achieved, and the underground pipe gallery has high water resistance.

The invention discloses a detector-sprinkler-based movable automatic fire-extinguishing system. The detector-sprinkler-based movable automatic fire-extinguishing system at least comprises a system power supply, a movement mechanism, a fire-extinguishing medium reservoir, a fire-extinguishing medium driving source, a sprinkler, a fire detector and a main controller. The system power supply provides electric energy by a storage battery. An output end of the storage battery is connected to the movement mechanism, the fire detector, the main controller and the fire-extinguishing medium driving source and provides work energy for the whole detector-sprinkler-based movable automatic fire-extinguishing system. An output end of the fire detector is connected to an input end of the main controller so that fire alarm information is transmitted to the main controller. An output end of the main controller is divided into two lines. One of the two lines is connected to an input end of the movement mechanism and controls the movement mechanism to move according to a certain track; and the other one of the two lines is connected to an input end of the fire-extinguishing medium driving source. Pressure output by the fire-extinguishing medium driving source is transferred to an input end of the fire-extinguishing medium reservoir and drives a fire-extinguishing medium in the fire-extinguishing medium reservoir to the sprinkler. The fire-extinguishing medium is spayed on a fire source by the sprinkler so that fire-extinguishing is realized.

The invention discloses an anti-seepage construction method for karst cave development stratum under overburden. The anti-seepage construction method comprises the following steps: S1, overburden drilling with a casing; S2, full-section drilling of basement and karst cave stratum; S3, drill-hole cleaning of basement and karst cave stratum; S4, grouting of basement and karst cave stratum; S5, grouting of overburden; and S6, hole sealing. The anti-seepage construction method has the advantages of simplicity in construction, favorable quality, controllable cost and high efficiency.

The invention belongs to a bridge project, and in particular relates to a reaction frame prestress anchoring system and a reaction frame prestress anchoring method for a vertical rotating steel pipe arch on a concrete bridge, which solve the problems that a rear anchor of a reaction frame has adverse effect on a bridge body, the rear anchor design is not flexible, a pedestal of a reaction frame influences the bridge floor and the like in the vertical rotating construction of the conventional camber combined bridge steel pipe arch. The anchoring system comprises a steel strand of which one end is connected with the reaction frame and the other end is connected with a steel box inside a side span solid section through the end part of the side span solid section of the concrete bridge, and also comprises a levelling steel plate fixed on the end part of the side span solid section, wherein concrete steel pipes are fixed on the levelling steel plate. The system and the method have the following advantages: the system and the method have no damage to the bridge floor of the bridge structure; a stress system is simple and explicit; the line shape of the bridge body is not influenced; the construction process is conveniently controlled; and the construction cost and early construction design are saved so as to ensure safety and quick construction.

The invention relates to a car searching method and system by combining supersonic waves with a video technology. Each supersonic parking stall detector detects vacancy state information of a parking stall, when the vacancy state of the parking stall is changed, the supersonic parking stall detector sends a license plate snapshot identification signal to a video parking stall detector in a wireless communication manner, the video parking stall detector carries out snapshot, the license plate number of a car is identified, and data information is transmitted to a background management server in a unified way to implement unified management. The supersonic parking stall detectors are combined with the video parking stall detector to improve the car searching efficiency and accuracy, and the work burden of the video parking stall detector is reduced.

The invention relates to a zanjon air lifting pushing solid circulation inversion A<2>O integrated construction oxidation ditch, which comprises an anoxic zone, an anaerobic zone, an aerobic zone provided with a millipore aerator group and an inversion A<2>O integrated construction oxidation ditch of a solid and liquid separating zone. The solid and liquid separating zone is arranged at the front end of a main ditch, the anaerobic zone is arranged at the tail end of the main ditch, and water inlets are respectively arranged at the front ends of the aerobic zone and the anaerobic zone. The integrated construction oxidation ditch is characterized in that a horizontal partition board which divides the main ditch into an upper groove layer and a lower groove layer is arranged at the middle-lower part of the main ditch, the aerobic zone and the anaerobic zone are respectively arranged at the upper groove layer and the lower groove layer, the aerobic zone is internally provided with n (n is more than or equal to 1) aeration lifting zone (s) which is (are) composed of an inlet water-retaining wall, an outlet water-retaining wall and the millipore aerator group and is (are) provided with a lower water inlet and an upper water outlet, the horizontal partition board of a first grade aeration lifting zone is provided with a plurality of lifting holes, and the aerobic zone is internally divided into n aerobic reaction zone (s) corresponding to the aeration lifting zone (s).The integrated construction oxidation ditch has the advantages that: the yielding water quality, particularly the dephosphorization and denitrification effect, is better, the occupation area is reduced, the equipment is reduced, the operation is simplified, and the operation cost is lowered.

The invention discloses an integrated electric vehicle charging gun. The integrated electric vehicle charging gun is provided with a charging gun body, a charging output connector, a control module and a cable, wherein the charging output connector is arranged on the charging gun body and is used for controlling the control module of the charging gun and the cable to be arranged in the charging gun body; the control module is provided with a communication module and a protection module. With the adoption of the integrated electric vehicle charging gun, the material cost of a charging pile is reduced; meanwhile, the charging gun has a small volume and light weight and basically occupies the land; the mounting cost of the charging pile is reduced; meanwhile, intelligent terminals (including cell phones, PAD and the like) of a user of the charging gun can be matched, so that a user can more conveniently use the integrated electric vehicle charging gun.

The invention provides a non-excavation and top drilling combined crossing and spanning pipeline laying method. The method comprises the steps of carrying out pipe-jacking construction and horizontal directional drilling construction at the same time; getting through the position, where pipelines are to be laid, at the bottom of a receiving shaft; then, enabling the pipelines to communicate with each other; and finally, carrying out backfilling, so as to achieve pipeline laying. According to the method, the part, difficult to construct through a horizontal directional drilling machine, of a pipeline construction zone of a complex stratum is selected as a pipe-jacking construction section, other complex stratums are adopted as horizontal directional drilling machine construction parts according to reconnaissance information, the one-time crossing distance is long, the constructable pipe diameter is large, large-diameter long-distance pipelines can be laid in the complex stratums through one step, construction cost is greatly reduced, and construction time is greatly saved.

The invention relates to a one-trip tubing string separate-injection coproduction method for a thick oil thermal recovery well. The one-trip tubing string separate-injection coproduction method is applied to the coproduction of the thick oil of an oilfield after the layered injection of steam. The method comprises the following steps of: tripping a separate-injection coproduction tubing string into a sleeve for the thick oil thermal recovery well; tripping in an oil pumping rod string; after a packing seal box is fixed on a wellhead device, injecting overheated steam into a lower oil layer; after finishing the injection of the overheated steam into the lower oil layer, downward conveying an oil-pumping rod by using an oil-pumping machine, wherein the oil-pumping rod downward slides to push a steel ball in a layered steam injection sliding sleeve to be located at the top of the sliding sleeve; and pressurizing the sliding sleeve to downwardly slide from a wellhead, closing a lower steam injection passage, and opening a steam injection passage of an upper oil layer. According to the one-trip tubing string separate-injection coproduction method for the thick oil thermal recovery well, the construction operation is convenient, tools are fully tripped in the thick oil thermal recovery well through a one-trip tubing string, and a pump is tripped in before the steam is injected, so that the time delay and the loss of steam heat, caused by the waiting for the decrease of the temperature at the wellhead, after the steam is injected are avoided, and the construction is safe and reliable.

The invention relates to a gas extraction method for L-shaped borehole staged fracturing of a weakened coal seam roof, which comprises the following steps: 1) selecting the drilling position and parameters at the ground position corresponding to the working face of the coal seam to be mined, and constructing L 2) After the construction of the L-shaped borehole is completed, casings and fracturing equipment are arranged in the L-shaped borehole, and each preset fracturing site of the coal seam roof is fractured by means of hydraulic jet staged fracturing, to weaken the roof of the coal seam; 3) After the fracturing operation is completed, remove the fracturing equipment and connect the casing in the L-shaped borehole to the gas drainage device; 4) Start the coal mining operation at the coal mining face, and While the coal face is moving forward, the gas in the fracture zone is extracted through the gas extraction device. This solution solves the problems in the prior art that the amount of gas extraction is limited and the extraction intensity is not enough, and the coal seam gas cannot be extracted and utilized to a great extent.

The invention relates to a cross-regional electronic medical record quick positioning and sharing system and a cross-regional electronic medical record quick positioning and sharing method. The system comprises a message source positioning device, a message transfer device, a message source cooperation device and a message queue manager. A distributed basic sanitary information application platform is integrally assembled based on transmission of messages, and cross-regional quick positioning and information sharing of electronic medical records and health records are realized in form of loose coupling. Based on existing distributed construction, an isomerous basic medical mechanism system is quickly accessed, and the places of the electronic medical records and health records are quickly positioned through a resource positioning device, and information is acquired, so that a lot of construction and operational and maintenance expenses can be saved. Integral personal lifelong medical data information is convenient to establish to ensure the continuity and the integrity of the electronic medical records and health records. Conditions of patients can be comprehensively mastered to truly realize synchronous prevention and treatment so as to avoid various repeated examinations, and thereby, a lot of treatment expenses are saved, and the doctor-patient relationship is improved.

The invention provides a method for controlling injection flow through pressure test, which belongs to the field of oil and gas. According to the method, separated layer water injection quantity is adjusted and controlled by measuring and controlling a later nozzle pressure of an intelligent water distributor in a separated layer water injection well. Through the adoption of the method provided by the invention, separated layer water distribution task can be wirelessly finished in a remotely controlled way without traditional steel wire tripping and blending, so that working time and construction cost are saved and separated layer blending efficiency is increased; and the method provided by the invention has the advantage of simplicity in operation of a layer-adjusting construction process and is an efficient and advanced separated layer water distribution method with high success rate.

An apparatus and a method for machine-to-machine (M2M) communication are disclosed. The present invention abstracts a device through a pre-stored device master template and a resource master template, manages the M2M communications through an interface accessible to a resource, and periodically synchronizes information. The present invention can solve a scalability problem of a system and a heterogeneity problem of the interface accessible to the resource, minimize a load of a network service capability layer without inhibiting service quality, and perform synchronization.

The invention relates to a dual cold sources airplane ground energy-conserving and environment-protective air-conditioning system, which solves the problems of high energy consumption, parking apron occupation and high operating cost in prior airplane ground air-conditioning unit. The system consists of a first air processing system and a second air processing system in compression refrigeration type; wherein, the first air processing system takes water supplied by a central air conditioner as heat transferring medium; the second air processing system in compression refrigeration type takes refrigerant as heat transferring medium. In the first processing system, a water-through heat exchanger (7) is injected with water from the central air conditioner of airport lounges by a pump (8) to carry out heat exchange with air from airport lounges or gallery bridge channel; the cooled air is transmitted into an engine room parked in the airport driven by a centrifugal fan (6) through a evaporator, an air outlet hood (1) and a underground passage; water after heat exchange by the water-through heat exchanger (7) is directly or through a double pipes heat exchanger to discharge into a water-storing system of the central air conditioner in airport lounges. The first processing system and the second processing system are located in the airport lounges. An underground passage system comprises an air supply duct with an insulating layer (22) buried under landing field outdoor, one end of the air supply duct is connected with the air supply tube (1), and the other end thereof is connected with a tube (23).

The embodiment of the invention discloses a construction method for concrete pouring of a support-changing type formwork trolley and an underground channel. The support-changing type formwork trolley adjusts a top formwork and a side formwork in place through a vertical lifting device and a lateral stretching device respectively, the formwork releasing process and the formwork supporting process are mainly implemented by mechanical equipment such as a hydraulic oil cylinder, the manual work quantity is greatly reduced, the support-changing type formwork trolley can bypass a foundation pit inner supporting system below a structure top plate of the underground channel when moving through a walking support-changing device installed on a supporting base assembly, a structure side wall and the structure top plate are poured at a time under the condition that the supporting system below the structure top plate of the underground channel is not detached, the structure top plate and the structure side wall of the underground channel are integrally formed, the construction technological processes are reduced, the construction period is shortened, the labor cost and the construction cost are saved, and the construction efficiency is improved.

A multiple oven, especially a double oven, with at least one lower oven and an upper oven arranged above it, features an upper fan for sucking in air over a surface of the upper oven, which features an upper vapor outlet, and also a lower fan for sucking in air over a surface of the lower oven, which features a lower vapor outlet. The multiple oven further features at least one vapor suction duct which is present for directing vapor exiting from the vapor outlet to one of the associated fans.

The invention discloses an assembly type electric cable trench and a manufacture method therefor. The assembly type electric cable trench comprises a U-shaped groove and a matching cover plate; the U-shaped groove comprises at least two U-shaped support racks having assembly holes, side vertical plates, electric cable support racks and base plates tiled on bottom parts of the U-shaped support racks; the side vertical plates and the electric cable support racks are respectively and orderly connected with stand columns at two sides of the U-shaped support racks in an assembled manner via use of connecting pieces; the U-shaped groove is formed between the at least two U-shaped support racks by the side vertical plates and the base plates via use of sealing gum. According to the assembly type electric cable trench, components are prefabricated or processed based on marked design; split type transport and on-site ground pit excavation are conducted; manufacture of a cushion ply layer is completed; after steel angles are welded on the cable support racks, the electric cable trench can be assembled via the connecting pieces such as screw bolts and the like. According to the assembly type electric cable trench disclosed in a technical solution of the invention, the U-shaped groove is broken up into the U-shaped support racks functioning as frames, the base plates having plate type structures and the side vertical plates; convenience of transportation can be realized, and strength of the electric cable trench is improved via the U-shaped support racks functioning as the frames.

The invention relates to a high-efficiency integral aerating device for sewage treatment, belonging to the field of sewage treatment aerating equipment. The device is composed of an air compressor, a compressed air delivery pipe system, a water-surface water-jump aeration mechanism, an underwater blast aeration mechanism and an underwater stirring mechanism, wherein the water-surface water-jump aeration mechanism is aeration rotary-axe wheel rows which are communicated by connecting compressed air delivery branch pipes in series, and the aeration rotary-axe wheel rows are communicated with the upper parts of air delivery main pipes through the air delivery branch pipes and are arranged on the surface of a water body; the underwater blast aeration mechanism is microporous aeration circular pipes, and the microporous aeration circular pipes are communicated with the compressed air delivery main pipes through microporous radial-connecting pipes and are arranged in the water body; the stirring mechanism is stirring wheel rows which are communicated by connecting the compressed air delivery branch pipes in series, and the stirring wheel rows are communicated with the air delivery main pipes through the air delivery branch pipes and are arranged between the aeration rotary-axe wheel rows and the microporous aeration circular pipe groups and between upper and lower microporous aeration circular pipe groups respectively. A set of compressed air power source is adopted, dissolved oxygen in the water body is integrally, efficiently, synchronously increased and is quickly and uniformly distributed, and the aeration efficiency and the energy utilization rate are significantly increased.

The invention relates to an apparatus for processing fecal sewage into reclaimed water at source, belonging to the technical field of environment protection. A collecting and flocculating device connected with a building sewer, a solid-liquid separating device, a sludge sterilizing device, a sewage filtering device, a reclaimed water recycling device and an organic fertilizer fermenting device are included in the technical scheme. The fecal sewage is directly processed by using the apparatus before entering a pipe network. The apparatus is characterized by carrying out solid-liquid separation on the fecal sewage at source, instantly processing the viscous sludge into a loose organic fertilizer and instantly processing the turbid sewage into the reclaimed water which does not contain pathogenic microorganisms. The conventional behindhand mode for the centralized processing of the sewage at a terminal is changed, the construction cost and the running cost are saved, and the environment protection is favorable. The fecal organic fertilizer is recovered and returned to fields to create economic value, the claimed water is recycled to save water resources, and the sewage treatment can be carried out benignly on a profit making rail. The national processing requirements of decrement, harmlessness and resource on pollutants are met. The invention is suitable for processing the fecal sewage of town buildings at source.

The invention discloses a constructing method for a high-rise building elevator shaft through an elevating type safety protection steel platform, comprising the steps of: firstly, manufacturing a steel platform matched with the size of an elevator shaft, then installing the steel platform inside the bottom layer of the elevator shaft, carrying out elevator shaft construction operation by constructors standing on the steel platform, elevating the steel platform layer by layer after the construction on the current operation layer is completed until the steel platform is elevated to the elevator shaft of the upper floor to facilitate the elevator shaft construction operation, sealing the lower elevator shaft after the steel platform is elevated, and repeating the steps until the elevator shaft construction on all the floors of the whole building is completed. The construction method is featured by safety, simplicity and convenience for operation, easiness for construction, obvious economic benefits and the like, has the greatest advantages of saving lease expense of raw materials and facilitating cost control, and is particularly suitable for high-rise buildings and multistoried buildings with longer construction periods.

The invention provides a connecting joint of a prefabricated steel pipe restraining reinforced concrete pier and a bearing platform and a construction method thereof. The connecting joint connects a prefabricated bridge pier and a bearing platform. The prefabricated bridge pier includes a steel pipe joint, an upper steel pipe and concrete. The steel pipe joint includes a lower steel pipe, a perforated steel plate and a connecting steel plate. The upper steel pipe is arranged above the lower steel pipe. The construction method of the connecting joint includes manufacturing a steel pipe joint, arranging longitudinal steel bars, pouring bridge pier concrete, hoisting a prefabricated pier and pouring filling concrete and the like. The connecting joint simplifies the formwork process. The construction speed is fast. The construction quality is improved. The construction environment is improved. The labor cost and the construction cost are saved. The bearing capacity of the connecting jointof the prefabricated pier and the bearing platform is improved on the basis of ensuring that the outer-wrapped steel pipe does not bear vertical load and greater lateral binding force on the core concrete is provided.

The invention relates to a multifunctional installation and investigation vessel, which comprises a vessel body and is characterized in that an A-type lifting frame, an oceanographic engineering crane and a derrick are sequentially arranged in the X direction on a main deck of the vessel body; a crane winch is arranged below the main deck, and a steel wire rope passes through the main deck; the crane and the crane winch are respectively arranged in positions on two sides of the vessel body; multiple empty tanks are arranged between the inner bottom and the outer bottom of the vessel body and in positions on two sides of the vessel body, and multiple lower water ballast tanks are arranged on the inner sides of the two sides of the vessel body; opposite tanks on the two sides of the vessel body are communicated via communication passages; an energy converter tank is also arranged at the bottom of the vessel body. When the tanks are damaged, water can enter the empty tanks uniformly, so that the stability is improved; when water in the empty tanks on one side of the vessel body is excessive, water can flow from one side to the other side of the vessel body via the communication passages, so that the transverse inclination after damage of the vessel can be reduced and the damaged stability is improved.