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1219 results about "Caisson" patented technology

In geotechnical engineering, a caisson (/ˈkeɪsən/ or /ˈkeɪsɒn/) is a watertight retaining structure used, for example, to work on the foundations of a bridge pier, for the construction of a concrete dam, or for the repair of ships. Caissons are constructed in such a way that the water can be pumped out, keeping the work environment dry. When piers are being built using an open caisson, and it is not practical to reach suitable soil, friction pilings may be driven to form a suitable sub-foundation. These piles are connected by a foundation pad upon which the column pier is erected.

Open caisson construction soil gushing dynamic early warning system based on multi-parameter fusion

The invention relates to the field of civil engineering construction safety monitoring, and discloses an open caisson construction soil gushing dynamic early warning system based on multi-parameter fusion, which comprises a sensor array module, a data processing module, a dynamic parameter correlation analysis module, a self-adaptive covariance optimization module, a risk index generation module and an early warning output module, collecting data in real time through a multi-source sensor and generating a parameter vector; the dynamic parameter correlation analysis module updates the dynamic matrix on line and represents real-time correlation among soil pressure, displacement and water level; the adaptive covariance optimization module dynamically adjusts a covariance matrix and suppresses noise interference; the risk index generation module fuses the dynamic matrix, the covariance inverse matrix and the parameter vector calculation weight, and corrects the risk index in combination with the vibration state of the construction machinery; and the early warning output module triggers grading alarm and feeds back to form a closed loop optimization link. According to the invention, real-time accurate early warning and self-adaptive prevention and control of the soil gushing risk are realized.
Owner:CHINA RAILWAY CONSTR BRIDGE ENG BUREAU GRP CO LTD +1

Operation platform in caisson and mounting method for shaft wall formwork

The present invention relates to the technical field of construction of caissons. Disclosed are an operation platform in a caisson and a mounting method for a shaft wall formwork. The caisson platform consists of a platform base plate, a vertical rod assembly, a first horizontal support assembly and a second horizontal support assembly, wherein the rod assembly consists of a plurality of outer-ring vertical rods, a plurality of inner-ring vertical rods and central vertical rods; and the first horizontal support assembly and the second horizontal support assembly have the same structure, and each of the first horizontal support assembly and the second horizontal support assembly consists of a plurality of long diagonal support rods, a plurality of connecting rods and a plurality of short support rods. The present invention can provide supporting points for fixing inner formwork boards and, in combination with outer-ring reinforcing steel bars for outer formwork boards, can overcome impact force and lateral static pressure during concrete pouring, without needing to fix the formwork boards by using tie bolts. In addition, in a formwork assembly stage, the platform base plate can provide a working face for mounting the formwork. Thus, the present invention is convenient to operate, does not require assembly and disassembly, and can be directly hoisted and installed for use as a whole, thereby saving on time and labor.
Owner:ECOLOGICAL ENG CO LTD OF CCCC FIRST HARBOR ENG CO LTD +1

Deviation correcting device for open caisson construction

The invention discloses an open caisson construction deviation rectifying device and relates to the technical field of open caisson construction deviation rectifying, the deviation rectifying device is used for rectifying an inclined well wall, the deviation rectifying device comprises a supporting frame, a connecting module, a driving motor, a rope collecting module, a lifting module, a gripper, a mooring rope and a ground anchor, the supporting frame is fixed to the ground, and the top end of the supporting frame is fixedly connected with the connecting module; the connecting module is fixedly connected with the rope collecting module and slidably connected with the lifting module, the driving motor is fixedly connected with the connecting module and fixedly connected with the rope collecting module, the lifting module applies downward pressure to the highest point, the rope collecting module pulls a gripper to apply downward pulling force to the two ends of the highest point, and well wall deformation caused by stress concentration during deviation rectification is prevented. The ground anchor can change the direction of the mooring rope position adjusting force, pressure can be accurately applied, secondary deviation of the open caisson caused by too large pressure is prevented, force can be applied from multiple directions to enable the open caisson to be evenly stressed during deviation rectification, and the deviation rectification stability is improved.
Owner:SINOHYDRO ENG BUREAU 4

Press-in type open caisson construction method based on automatic control system

The invention discloses a press-in type open caisson construction method based on an automatic control system. The automatic control system comprises a data acquisition module, a data analysis and decision module and an execution control module. The data acquisition module is used for collecting data in the sinking process of the open caisson in real time, the data analysis and decision module analyzes the collected data in real time and generates a control instruction, and the execution control module regulates and controls the pressure sinking equipment and the soil sampling equipment according to the control instruction; the construction method comprises the following steps: constructing a ground anchor pile; isolation pile construction; construction of the open caisson: surveying and setting out, excavating a foundation pit, laying a sand cushion layer, laying a concrete cushion layer, constructing a brick moulding bed, erecting a scaffold, erecting a template, binding reinforcing steel bars and pouring concrete; pressing and sinking the open caisson; according to the method, an automatic control system is adopted, various parameters in the open caisson construction process can be monitored and adjusted in real time, uniform sinking of the open caisson is achieved through accurate control over the parameters, and the construction precision and quality are improved.
Owner:CHINA MCC5 GROUP CORP LTD

Method for constructing underground space in peripheral area of existing building through open caisson

A method for constructing an underground space in a peripheral area of an existing building by using an open caisson belongs to the technical field of open caisson construction, and comprises the following steps: arranging an open caisson construction area in an area between the existing buildings, and constructing an uplift pile in an internal area of the open caisson to be constructed; the counter-force beam is constructed, so that the counter-force beam is fixedly connected with the uplift pile, the two ends of the counter-force beam are fixedly connected with the existing building, and the weight of the existing building is used as counter-force to play a role in assisting sinking of the open caisson; after the counter-force beam is constructed, the open caisson is constructed, the uplift piles are arranged in the open caisson, the stress state of the counter-force beam can be improved, the cross section of the counter-force beam can be reduced, in the area with the high underground water level, the uplift piles on the lower portion of the open caisson can serve as anti-floating components of the open caisson, the uplift piles in the open caisson can serve as partial columns of a basement, cost is effectively reduced, and the construction period is shortened. The uplift pile is arranged in the open caisson, and compared with the uplift pile arranged near the outer wall of the open caisson, the uplift pile has higher bearing capacity and can better play a role.
Owner:SHANDONG JIANZHU UNIV

Deviation rectification construction method for large press-in type rectangular open caisson structure

The invention belongs to the technical field of open caisson construction, and particularly discloses a large press-in type rectangular open caisson structure deviation rectifying construction method which comprises the steps that a plurality of monitoring points are arranged on the two long side portions of a rectangular open caisson; the rectangular open caisson continuously sinks into the side sinking channel; acquiring an elevation value between each monitoring point and the port of the side sinking channel in real time; whether the rectangular open caisson needs to be rectified at the current moment or not is judged according to the difference value of the elevation values between the monitoring points; respectively drawing elevation curves of the two long side parts according to the elevation value at the current moment; according to the elevation curve, determining the adjustment amount required for correcting the rectangular open caisson, adjusting the postures of the two long side parts through the adjustment amount, and updating the elevation curve in real time; the method has the following advantages that accurate control over the rectangular open caisson is achieved through real-time monitoring and deviation rectification in the sinking process, the method adapts to complex projects such as underground stations and pipe galleries, the construction efficiency is improved, manual dependence is reduced, meanwhile, the urban environment is effectively protected, and surrounding influences are relieved.
Owner:SHANGHAI URBAN CONSTRUCTION DESIGN & RESEARCH INSTITUTE (GROUP) CO LTD

Method for assisting open caisson foundation construction through three-dimensional geologic model based on BIM and GIS fusion

The invention relates to the technical field of engineering management, in particular to a method for assisting open caisson foundation construction through a three-dimensional geologic model based on BIM and GIS fusion, and the method comprises the steps: collecting engineering data, and constructing a three-dimensional live-action model based on the engineering data; geological exploration data are collected, and a three-dimensional geological model is constructed based on the geological exploration data; superposing the three-dimensional geologic model and the three-dimensional live-action model based on the coordinate information; and an open caisson foundation construction management platform is built, and the overlapped model is integrated in the open caisson foundation construction management platform. By providing high-precision geological information and a visual construction view, the problems that in open caisson foundation construction, the sinking rate is difficult to control, the posture adjusting difficulty is large, and the stress condition is complex are effectively solved, and the construction safety and efficiency are improved.
Owner:NO 2 ENG CO LTD OF CCCC FIRST HIGHWAY ENG +1

Caisson wharf and construction method thereof

According to the caisson wharf and the construction method thereof, a layered structure of a steel slag-rubber particle composite lower layer and a regenerated resin-basalt fiber composite upper layer is adopted for a base, and interface bonding is enhanced in combination with a silane coupling agent; the foundation bed is assembled by precast concrete modules and is poured by nano mortar; the caisson main body is provided with a positioning plate which is inserted into the guide groove, the caisson main body is filled with multi-graded steel slag fragments, and an independent airbag cavity is pre-buried in a bottom plate; the buoyancy control system dynamically adjusts the water injection rate based on multi-sensor data; the ecological permeable pipeline network adopts a diatomite-zeolite coating; the prestressed steel strand towing system is regulated and controlled in real time through the friction damper. The caisson wharf and the construction method thereof have the remarkable advantages in the aspects of structural stability, ecological friendliness, construction efficiency, intelligence and automation, the problems existing in a traditional caisson wharf can be effectively solved, and the requirements of modern port construction are met.
Owner:CHINA HARBOUR ENGINEERING

Open caisson sinking control method based on dynamic balance of soil resistance field

The invention provides an open caisson sinking control method based on dynamic balance of a soil resistance field, which comprises the following steps of: judging whether an open caisson posture dynamic balance condition is met or not according to an open caisson bottom surface soil resistance vector field and an open caisson posture offset, if not, intervening space distribution of the open caisson bottom surface soil resistance vector field, and reconstructing the open caisson bottom surface soil resistance vector field; the dynamic balance condition of the open caisson posture is met; and based on the open caisson bottom surface soil resistance vector field, the height difference vectors of the adjacent bins on the open caisson bottom surface and the soil taking control matrix, a dynamic decision objective function is constructed, the objective function is solved, an optimal soil taking control matrix is obtained, and an actuator cluster is controlled to take soil from the bins on the open caisson bottom surface. According to the method, the influence of dynamic evolution of the soil resistance field of the bottom face of the open caisson on the open caisson attitude offset is considered, the soil resistance field is dynamically adjusted, the open caisson attitude is accurately controlled, and soil taking control is optimized.
Owner:THE THIRD CONSTR CO LTD OF CHINA CONSTR THIRD ENG BUREAU

Large-diameter duct piece independent kiln flow conveying prefabricating method and large-diameter duct piece independent kiln flow conveying prefabricating system

The invention relates to the technical field of tunnel engineering prefabricated part production, in particular to a large-diameter duct piece independent kiln assembly line conveying prefabricating method and system. S2, a reinforcement cage and an embedded part are installed; s3, concrete is precisely poured and vibrated; s4, pre-curing and surface treatment; s5, carrying out roller way type flow conveying; s6, hydration heat-driven dynamic maintenance is carried out; and S7, demolding and finished product detection. And S8, mold circulation. According to the large-diameter duct piece prefabricating production line, through technical innovation in multiple aspects of mold, conveying, maintenance, control and the like, the core technical problem in existing large-diameter duct piece prefabricating production is solved, high-precision, high-efficiency, low-energy-consumption and green production of large-diameter duct pieces is achieved, and the large-diameter duct piece prefabricating production line has remarkable technical advantages and wide application prospects and is suitable for large-diameter duct piece prefabricating production. The method can be widely applied to infrastructure construction projects such as shield tunnels, open caisson projects and underground comprehensive pipe galleries.
Owner:CHINA RAILWAY 19 BUREAU GRP CO LTD +3

Large open caisson soil taking control method based on soil body critical state

The invention relates to the field of foundation engineering, and discloses a soil mass critical state-based large open caisson soil sampling control method which comprises the following steps: acquiring soil layer distribution and physical and mechanical parameters of the position of an open caisson, establishing an interaction model of an open caisson blade foot and a soil mass, calculating pressure distribution of a blade foot contact area through a finite element method, and calculating the soil mass critical state of the open caisson. Simulating the distribution condition of a soil body plastic zone and carrying out connectivity analysis; designing an open caisson soil taking construction scheme based on the analysis, wherein the scheme comprises a soil taking sequence, a soil taking depth and a plastic zone proportion index; whether the construction scheme meets the safety and stability requirements of open caisson sinking or not is judged through simulation, if the requirements are not met, soil taking parameters are adjusted, verification is conducted again till the requirements are met, accurate design and dynamic adjustment of the open caisson sinking process are achieved through dual control over the plastic zone proportion index and the connectivity index, and the construction efficiency is improved. And the safety, the stability and the reliability of construction are obviously improved.
Owner:CHINA RAILWAY CONSTR BRIDGE ENG BUREAU GRP CO LTD +2

Siltation promotion device for coastal zone regulation and restoration

The invention relates to the technical field of coastal zone renovation and repair, in particular to a siltation promotion device for coastal zone renovation and repair, which comprises a siltation promotion assembly and a caisson which are sequentially arranged from top to bottom, the siltation promotion assembly comprises a plurality of siltation promotion modules which are connected through side edges, and the top side of the siltation promotion assembly is used for being fixedly connected with a coast; each siltation promotion module comprises a frame and a plurality of anti-flow plates, the multiple anti-flow plates are sequentially arranged in the frame from top to bottom, the two ends of each anti-flow plate are rotationally connected with the two opposite sides of the frame correspondingly, and every two adjacent siltation promotion modules are rotationally connected through one side edge of the frame; a sedimentation cavity is formed in the top of the caisson, a permeable material is arranged in the sedimentation cavity, flow guide holes penetrating through the two sides are formed in the upstream face and the downstream face of the caisson correspondingly, and the bottom side of the siltation promotion module is connected with the caisson and located above the sedimentation cavity; the siltation promotion device is formed in a splicing mode, the siltation promotion device can be well suitable for complex terrains, and the anti-flow plate is arranged to effectively resist water flow impact.
Owner:GUANGZHOU URBAN PLANNING & DESIGN SURVEY RES INST

Press-in type open caisson

PendingJP2025145604ACaissonsCaisson
To stably press a caisson in.SOLUTION: A cylindrical press-in type open caisson extending in the up-down direction includes a cutting edge provided at the lower end of the press-in caisson, a friction cut section provided on the entire outer surface of the press-in caisson at a predetermined height from the lower end and at a predetermined thickness from the outer surface outward, and multiple plate-shaped protrusion sections provided at predetermined intervals in the circumferential direction of the outer surface, at a predetermined width in the circumferential direction of the outer surface, at a predetermined height from the upper end of the friction cut section, and with a thickness less than the thickness of the friction cut section.SELECTED DRAWING: Figure 3
Owner:OKUMURA CORP

Drag-reducing sinking-assisting system for deep and large open caisson and cooperative control method

The invention relates to the field of geotechnical engineering construction, in particular to a deep and large open caisson resistance reducing and sinking assisting system and a cooperative control method, and the system comprises a stratum information base which stores stratum information corresponding to each well wall subarea; the attitude monitoring module is used for acquiring control point coordinates, control point elevation, deflection amount, well bottom elevation, water level in the well, surrounding stratum, sinking speed and blade foot resistance of the open caisson in real time; the thixotropic slurry drag reduction module can independently control the slurry viscosity of each well wall subarea; the high-pressure jet flow sinking assisting module can independently control the jet pressure of each well wall subarea; and the counterweight adjusting module can adjust the counterweight loading amount. According to the method, self-weight sinking, thixotropic slurry drag reduction, high-pressure jet flow sinking assistance and counterweight sinking assistance are covered, cooperative control over all drag reduction sinking assistance systems can be achieved, the construction efficiency of the deep and large open caisson penetrating through the hard soil layer can be greatly improved, the problems that the open caisson construction geological adaptability is poor, multi-system cooperation is difficult, and the accident rate is high are solved, and the construction quality is improved.
Owner:CCCC FIRST HIGHWAY CONSULTANTS CO LTD

Permanent and temporary combined square block and caisson combined gravity type wharf and construction method thereof

A permanent-temporary combined square block and caisson combined gravity type wharf comprises a land area rear storage yard, a temporary prefabricating yard used for prefabricating square blocks and caissons is arranged on the land area rear storage yard, the temporary prefabricating yard is communicated with square block structural sections through caisson shipping channels, and the square block structural sections are arranged along the coast and serve as caisson temporary shipping wharfs. The caisson shipping channel is used for transporting prefabricated square blocks and caissons; and after the caisson is transported out through the caisson shipping channel and the square structure section, the caisson is arranged to be connected with the square structure section into a whole, and the caisson structure section wharf is formed. According to the wharf, a site does not need to be additionally found to serve as a prefabrication yard and a temporary wharf as a construction site, and the temporary shipping wharf and part of the prefabrication yard are combined permanently and temporarily, so that wharf construction and dismantling cost can be saved.
Owner:CHINA STATE CONSTR PORT ENG GRP

Caisson dewatering structure in foundation pit and construction method

The invention relates to a precipitation structure of a caisson in a foundation pit and a construction method.The precipitation structure comprises a box body, the side wall of the box body is fixedly connected with a plurality of side anchor hooks which are evenly distributed at equal intervals, and the side wall of the bottom of the box body is fixedly connected with a plurality of bottom anchor hooks which are evenly distributed at equal intervals; cross-shaped reinforcing ribs are fixedly connected to the inner walls of the periphery of the box body, a deformation early warning device is arranged in the middle of the box body, according to the structure, the welded box body sinks into a foundation pit, then concrete pouring is carried out, water in the foundation pit is rapidly discharged, the links of digging a precipitation well, burying a water pump, manually nursing precipitation and the like are omitted, the construction period is shortened, and the construction efficiency is improved. The construction efficiency is effectively improved, the deformation early warning device is additionally arranged in the box body for internal supporting, deformation of the box body under concrete pressure is effectively prevented, in addition, the deformation amount of the box body is monitored through induction of the metal detector to the metal sheet, early warning can be conducted on deformation of the box body, and the situation that the construction progress is affected due to excessive deformation of the box body can be effectively prevented.
Owner:HEBEI ZHONGZHU AIJUN CONSTR GRP CO LTD

Integrated steel mould operation platform applied to open caisson construction

The invention discloses an integrated steel formwork operation platform applied to open caisson construction. The integrated steel formwork operation platform comprises an outer formwork, an inner formwork, an outer operation platform, an inner operation platform and opposite-pull screws. The operation platform is integrated on the steel mold through bolt connection, the protective fences are arranged inside and outside the operation platform, and constructors stand on the operation platform to carry out operation such as inner and outer mold plate installation, steel bar binding and water-stop belt welding, so that the risk of safe operation is greatly reduced, and the construction efficiency is improved; the steel die assembly is fixedly connected with the well wall through split bolts, after a section of the open caisson wall is manufactured, maintenance is conducted till the designed strength is achieved, sinking is started, a lower die plate needs to be dismantled before sinking, the uppermost layer die plate is reserved to serve as a supporting point for later steel die installation, and after the steel die sinks to the preset height, the dismantled steel die is horizontally moved and installed to the position above the upper layer die plate. The lower section of well wall can be manufactured; repeated erection and disassembly of the scaffold in the construction process are avoided, the construction safety risk is reduced, and the construction period is shortened.
Owner:HUBEI ELECTRIC POWER TRANSMISSION & DISTRIBUTION ENG

Caisson construction method

The invention relates to a caisson construction method, and belongs to the technical field of hydraulic engineering caisson construction. In order to solve the problems that in the sinking process of a traditional caisson, perpendicularity is difficult to control, deflection is prone to occurring, and consequently the construction quality does not reach the standard, the technical scheme that tilt angle sensors are pre-buried in the opposite angles of the inner wall of the caisson, and a bottom high-pressure water spraying pipe system is arranged is adopted. Steel spray pipes with the axes forming 30-degree included angles with the horizontal plane are arranged, 2.5 MPa high-pressure water is combined to form slurry to assist sinking, the water pressure of the spray pipes is dynamically adjusted by monitoring dip angle data of the four corners in real time, the dip angle difference value is controlled within 0.3 degree, and after sinking is completed, the peripheral gravel throwing and filling and layered clay rolling and backfilling technology is implemented. According to the method, accurate control over the sinking posture of the caisson is effectively guaranteed, the method is suitable for rapid and accurate installation of caisson structures in water conservancy projects such as river regulation and wharf foundations, and the construction efficiency and the structural stability are remarkably improved.
Owner:CHINA HARBOUR ENGINEERING

Complex geological foundation open caisson structure and construction method thereof

The invention discloses a complex geological foundation open caisson structure and a construction method thereof, and relates to the technical field of open caisson construction.The open caisson structure comprises an open caisson device, a lifting device and a slurry pump, and the open caisson device is an auxiliary construction device; the soil pressing structure and the soil cutting structure of the open caisson device can treat the land around the inner wall of the open caisson wall during construction, during construction, the lifting device places the open caisson device into the poured open caisson wall, the open caisson device can flatten the land around the blade foot of the open caisson wall, and the open caisson wall can be well poured into the open caisson wall. Loads borne by all parts of the blade foot are the same, deviation of the open caisson wall during descending is avoided, the land around the blade foot can be evenly excavated, underground muddy water can be pumped out through the mud pump, underground construction is prevented from being affected, and after the open caisson wall descends to the preset elevation, the lifting device takes the open caisson structure out of the open caisson wall, and the open caisson wall is lifted to the preset elevation. And then the open caisson wall is subjected to bottom sealing.
Owner:SINOHYDRO ENG BUREAU 4

Open caisson sinking construction control method and system based on accurate sinking resistance detection

The invention discloses an open caisson sinking construction control method and system based on accurate sinking resistance detection. The open caisson sinking construction control method comprises the steps that an end resistance monitoring device and a side friction resistance monitoring device are pre-buried in an open caisson structure; in the sinking process of the open caisson, end resistance and side friction resistance data are collected; the data processing center dynamically calculates the real-time proportion of the end resistance and the total side friction resistance in the sinking total resistance, and analyzes the spatial distribution characteristics of the real-time proportion; based on the real-time proportion and the spatial distribution characteristics, the sinking state of the open caisson is intelligently judged, and the sinking state at least comprises normal sinking, end resistance type sinking difficulty, side resistance type sinking difficulty, inclination risk and sudden sinking risk; and according to the intelligently judged sinking state, a targeted control instruction is generated and output so as to control a sinking assisting system deployed on the open caisson to execute partitioned and graded resistance reduction or stable sinking operation. Real-time sensing, intelligent diagnosis and accurate active control of the sinking process of the open caisson are achieved, and the construction safety, efficiency and engineering quality are effectively improved.
Owner:HUBEI COMM PLANNING & DESIGN INST CO LTD +3

Steel open caisson supporting cushion device in deepwater environment

ActiveCN223535748UCaissonsCaissonCushion
The utility model provides a supporting cushion device for a steel open caisson in a deepwater environment. The supporting cushion device comprises a grouting capsule and a capsule flange, the capsule flange is connected between the open caisson and the grouting capsule; a connecting bolt hole, an internal thread grouting hole and an internal thread vent hole are formed in the side, facing the capsule flange, of the grouting capsule. The grouting pipe and the breather pipe respectively penetrate through the open caisson and the capsule flange and then are connected with the internal thread grouting hole and the internal thread air hole; the side, away from the grouting capsule, of the grouting pipe is connected with a grouting machine. And the grouting capsule is fixedly connected with the capsule flange through the connecting bolt hole.
Owner:CHINA FIRST HIGHWAY ENGINEERING CO LTD +1

Suspended ballast type floating offshore wind power foundation adapting to water depth and using method

The invention discloses a suspended ballast floating type offshore wind power foundation suitable for water depth and a using method, and belongs to the technical field of floating type offshore wind power generation. The wind power foundation comprises a three-stand-column semi-submersible foundation, a mooring system and a control system, and the three-stand-column semi-submersible foundation comprises three vertical stand columns, a supporting rod and a ballast caisson; the ballast caisson is connected with a sliding rail arranged on the side wall of the vertical stand column through a sliding rope, so that the ballast caisson moves up and down relative to the vertical stand column, the position of the ballast caisson is adjusted through a control system, and then the gravity center position and the draft depth of the foundation are adjusted so as to adapt to different environmental conditions, and the stability and the anti-overturning capacity are ensured. The use method comprises the steps of monitoring environmental conditions, calculating overturning moment, calculating anti-overturning moment, adjusting the depth of the ballast caisson and recording and analyzing data, the required moving depth of the ballast caisson is reversely deduced by calculating the overturning moment to ensure that the gravity center and the buoyancy center of the foundation are kept at proper positions, and the risk of overturning of the foundation is reduced.
Owner:CCCC FOURTH HARBOR ENG INST CO LTD

Suspension bridge anchorage split type seabed open caisson foundation construction method and device

The invention relates to the technical field of bridge construction, in particular to a suspension bridge anchorage split type seabed open caisson foundation construction method and device. The construction method comprises the steps of foundation pit excavation, concrete replacement and filling, steel open caisson manufacturing, undocking and floating transportation, positioning and sinking, bottom sealing and core filling, sandwich wall concrete pouring, straining beam construction, cover plate construction and gravel backfilling. The concrete replacement filling comprises pouring point arrangement, foundation pouring device erection and underwater concrete pouring; the positioning sinking refers to water injection sinking and rapid high-precision positioning of the open caisson by utilizing an automatic positioning anchor cable device, an automatic positioning control device and an open caisson leveling and supporting device; the straining beam construction step comprises the steps of hanging a straining beam pouring device, floating pouring of straining beam concrete, joint construction of the open caisson and the straining beam pouring device, dry pouring of residual straining beam concrete and dismantling of the straining beam pouring device. The foundation is high in bearing capacity and flatness and good in applicability; the positioning precision of the open caisson is high; the large-span high-water-head-difference reinforced concrete straining beam is short in construction period and low in cost.
Owner:CCCC SECOND HARBOR ENGINEERING CO LTD

Fabricated ocean suction caisson foundation structure and construction method thereof

The invention discloses an assembly type ocean suction type caisson foundation structure and a construction method thereof, and belongs to the field of caissons, the assembly type ocean suction type caisson foundation structure mainly comprises a caisson assembly, the caisson assembly comprises a plurality of sets of assembly type caisson bodies, reinforcing steel bars are fixedly installed in the caisson bodies, open holes are formed in the caisson bodies, oblique openings are formed in the bottoms of the caisson bodies, and the caisson bodies are fixedly installed in the open holes. According to the fabricated ocean suction type caisson foundation structure and the construction method thereof, the bionic plates and the caisson body can enter the sea together, so that the holes can make contact with seawater, and therefore the bionic plates simulate the reef environment through the holes; according to the caisson, a habitat is provided for marine organisms, a food chain is constructed, an ecological chain is repaired, biological diversity is improved, wave force can be weakened, base scouring can be reduced, structural fatigue damage can be reduced in engineering, meanwhile, a protective layer is formed through biological attachment, and caisson durability is improved.
Owner:NANTONG MARINE ADVANCED RESEARCH INSTITUTE SOUTHEAST UNIVERSITY

Pipe jacking construction method for soft clay layer pipeline

The invention provides a pipe jacking construction method for a soft clay layer pipeline, which comprises the following steps: S1, arranging a working well and a receiving well at the starting point and the terminal point of the pipeline through open caisson construction, S2, splicing guide rails at the well bottoms of the working well and the receiving well, and installing a pipe jacking machine head and a jacking oil cylinder into the working well by using hoisting equipment; s3, the front end of the pipe jacking machine head is jacked into a hole inlet through a jacking oil cylinder, and S4, the pipe jacking machine head enters a soil layer after entering the hole, and jacking control and deviation correction are conducted according to parameters of a pipe jacking hydraulic system; s5, when the pipe jacking machine head is close to the well wall of the receiving well, the pipe jacking machine head penetrates through the outlet hole at a time; and S6, after acceptance inspection is qualified, the pipe jacking machine head and the guide rail are detached, and then the pipe jacking machine head is hoisted out. Jacking control and deviation correction are carried out according to parameters of the pipe jacking hydraulic system, deviation of the pipe jacking machine head can be found and corrected in time, it is ensured that the jacking direction of a pipe joint is accurate, and the construction quality is improved.
Owner:CHINA TIESIJU CIVIL ENGINEERING GROUP CO LTD +1

Caisson moving and transporting system and caisson moving and transporting method

The invention relates to a caisson transferring system and method, and belongs to the technical field of caisson transportation. According to the caisson transferring method, a capsule trolley, a pushing oil cylinder, a rail, a rail clamping device, an electric water pump, a hydraulic pump station, an electric oil pump and a controller are included; the capsule trolley is used for bearing the caisson; the pushing oil cylinder is connected to the capsule trolley and used for driving the capsule trolley to move. The track is laid in a groove in the ground; the rail clamping device is used for clamping a rail; the electric water pump is used for injecting water into capsules of the capsule trolley; the hydraulic pump station is used for supplying oil to the pushing oil cylinder and a clamping oil cylinder of the rail clamping device; the electric oil pump is used for driving a sliding block on the capsule trolley to move so as to lift the height of the sliding block; the controller is used for controlling the electric water pump and the electric oil pump to work. According to the caisson moving and transporting system and method, the controller is used for controlling the working process of the rail clamping device, the capsule trolley and the pushing oil cylinder, so that automatic moving and transporting of the caisson are achieved.
Owner:CCCC FIRST HARBOR ENGINEERING CO LTD +1

Construction method of fabricated circular open caisson

A construction method of an assembly type circular open caisson comprises the steps that firstly, assembly type open caisson pieces are produced through a standardized factory, a customized steel mold and a steam curing production line; 2, blade foot pad layer concrete is poured in advance on site, a flat car is adopted for transporting the pipe pieces to the open caisson construction site, the pipe pieces are assembled into ring pipes through high-strength bolts on site, longitudinal ring pieces are spliced in a staggered joint mode, and joints are waterproof through double elastic sealing gaskets; 3, assembling the fabricated open caisson segments into two layers to implement the first sinking construction of the open caisson; 4, when the assembly type open caisson sinks to be flush with the ground, the number of the assembly pipe pieces continues to be increased, and the sinking depth of the assembly type open caisson is continuously increased till the assembly type open caisson sinks to the designed depth; and 5, open caisson bottom sealing and bottom plate construction are carried out. By the adoption of the assembly type mode, the assembly type open caisson is easy to assemble and high in assembly speed, the open caisson construction period is greatly shortened, the working efficiency is more effectively improved, and the construction period is shortened.
Owner:YANGTZE ECOLOGY & ENVIRONMENT CO LTD

Breakwater structure for wave power generation and construction method thereof

The invention relates to a breakwater structure for wave power generation and a construction method of the breakwater structure. The breakwater structure comprises a lower barrel body, an upper caisson and a power generation device. A compartment is arranged in the upper caisson, and the power generation device is installed in the compartment. A wave inlet hole is formed in the wave facing side of the upper caisson, a cast-in-place adjusting node is arranged on the top of the upper caisson, and a wave wall, a cable pipe trench, a detachable road plate and an overhauling device are sequentially arranged above the node. The breakwater structure and the wave power generation system are integrated by adopting standard barrel type foundation factory prefabrication and floating transportation installation and combining cast-in-place joint leveling and the detachable road plates. The structure has the advantages of being convenient to construct, controllable in cost, stable in structure, convenient to maintain and the like, is suitable for wave power generation under medium and small wave conditions, and is particularly suitable for green power supply and coast protection in areas such as ports and islands.
Owner:CCCC THIRD HARBOR CONSULTANTS

Method for sinking open caisson without drainage

The invention provides a method for sinking an open caisson without drainage, and belongs to the technical field of open caisson sinking. Comprising the following steps: laying soil sampling points; measuring the elevation of the mud surface; planning a soil sampling path; and the intelligent soil sampling equipment samples soil along a preset path. The gravity sensor senses the weight change of the dredge pipe to judge grounding, the multi-beam sounding system obtains three-dimensional data of a mud surface and an artificial intelligence algorithm optimization model, and the artificial intelligence algorithm is used for laying soil sampling points and planning a soil sampling path and depth according to soil body parameters such as the weight of the soil body and stress-strain monitoring data. A laser range finder is used for determining the position of a mud suction pipe; soil stress and strain and mud surface change are monitored in real time during soil sampling; the soil sampling depth and time are dynamically adjusted by an artificial intelligence algorithm; the purposes of precision and visualization of mud surface elevation measurement, scientization and precision of soil sampling planning, intelligent control of the soil sampling process and remote intelligent centralized control of construction are achieved.
Owner:THE THIRD CONSTR CO LTD OF CHINA CONSTR THIRD ENG BUREAU +2

Cutter suction dredging device suitable for soft soil layer in open caisson sinking process

The utility model belongs to the technical field of open caisson sinking, and relates to a cutter suction dredging device suitable for a soft soil layer in an open caisson sinking process, which is characterized by comprising a water inlet pipe, a mud outlet pipe and a dredging system, the dredging system comprises a hoisting frame, a winch, a mud pump, an asynchronous motor and a reamer, the winch is mounted on the hoisting frame, and the mud pump is mounted on the hoisting frame. A slurry pump is installed on a steel wire rope driven by the winch, and reamers driven by an asynchronous motor are installed on the periphery of the slurry pump through an installation frame. A water inlet pipe is installed at the upper end of the mud pump in a limiting mode, and a mud outlet of the mud pump is connected with a mud outlet pipe. In the sinking process of the open caisson, if the open caisson encounters a soft soil layer, the soft soil layer can be changed into mud through water inflow of the water inlet pipe and stirring of the reamer, and then cutter suction dredging operation is carried out. The problem that a traditional sinking mode is not suitable for a soft soil layer is solved.
Owner:CCCC FIRST HARBOR ENGINEERING CO LTD +1