872results about "Caissons" patented technology

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.

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.

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.

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.

The invention relates to the technical field of caisson construction, in particular to a caisson standard layer steel bar binding system and a construction method thereof.The caisson standard layer steel bar binding system comprises an outer working platform, an inner working platform, an outer binding platform, an inner binding platform and an embedded part, the embedded part is arranged on the outer wall of a caisson standard layer, and the outer working platform is detachably connected to the embedded part; the outer binding platform is supported by the outer working platform, so that the outer binding platform is arranged on the outer wall of the caisson standard layer; the inner working platform is detachably connected to the inner wall of the caisson standard layer, and the inner binding platform is supported by the inner working platform, so that the inner binding platform is arranged on the inner wall of the caisson standard layer, and the inner binding platform and the outer binding platform are supported by the inner working platform and the outer working platform; and therefore, an operator can conveniently bind a standard layer reinforcement cage at a higher position through the outer binding platform and the inner binding platform.

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.

To provide a remote control system for a pneumatic caisson that can be operated without being aware of the time lag between operating equipment and an excavator.SOLUTION: A remote control system S for pneumatic caisson includes an excavator measuring device 81 that measures the position and posture of an excavator 50, a ground measuring device 82 for measuring ground conditions, a calculator 70 that calculates a simulation image based on the measured position and posture of the excavator 50 and the measured ground conditions, a monitor 71 that is placed at a remote location, and displays simulation images calculated by the calculator 70, an operation device 61 that is placed at a remote location and operated by an operator who operates a virtual excavator 50X in the simulation video, and a controller 60 that drives and controls the excavator 50, and drives and controls the excavator 50 in accordance with the operation of the operation device 61 operated by the operator.SELECTED DRAWING: Figure 1

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.

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.

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

The invention discloses small and medium-sized assembled open caisson numerical control hoisting and mounting integrated equipment and a construction method thereof. The equipment comprises a hoisting and mounting machine and a high-precision servo numerical control system; in the hoisting and installing machine, a top ring beam is located above a bottom ring beam, the top ring beam and the bottom ring beam are connected through a supporting column, the two ends of a crane beam arranged along the diameter of the top ring beam are driven by an annular driving mechanism to slide along the top ring beam in the annular direction, a crane translates along the crane beam through a radial translation mechanism, and a telescopic arm translates up and down along the crane through a lifting mechanism. The mechanical operation arm is arranged at the lower end of the telescopic arm and is opened and closed through the opening and closing mechanism so as to loosen or clamp the prefabricated well piece. The device can improve the construction quality, is accurate in alignment, is high in universality, is especially suitable for the construction of small and medium-sized fabricated open caissons, and belongs to the technical field of prefabricated open caisson construction, prefabricated well piece carrying manipulators, prefabricated well piece positioning and distance measurement, and prefabricated well piece transportation devices.

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.

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.

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.

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.

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.

The invention relates to an integrated grouting device and an offshore wind power single pile foundation anti-scour construction method based on an indigenous microorganism precuring seabed, and the method comprises the following steps: prefabricating a special integrated grouting device according to the installation condition of an offshore wind power single pile foundation; an integrated grouting device is installed on the seabed of the to-be-constructed area through a hammering method and a negative pressure method; urease microorganisms are enriched and cultivated in in-situ seabed soil through an integrated grouting device, the microorganisms are induced to generate calcium carbonate gelatinization crystals so as to bond sandy soil particles, and the overall strength of a surface seabed is improved; and a single-pile foundation is installed on the microorganism solidification seabed. Before pile sinking construction, the surface seabed of the to-be-constructed area is intensified in advance through in-situ enrichment cultivation of indigenous urease microorganisms and induction of mineralization and crystallization of the microorganisms, scouring protection of the single pile foundation in the whole service cycle is achieved, and then the local scouring problem in the pile sinking process is solved.

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.

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.

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.

The invention discloses a positioning construction method suitable for a double-wall steel hanging box in a high-tidal-range deepwater environment, which comprises the following steps: step 1, the structure of the double-wall steel hanging box is designed, the double-wall steel hanging box comprises a wall body bottom section, a wall body middle section and a wall body top section which are arranged in sequence, the wall body middle section is a hollow closed cabin, and water does not enter the cabin all the time; the section top of the wall body middle section is positioned below a low tide level; a communicating hole is formed in the position, located on the lower portion of the inner wall plate, of the wall body top section. Secondly, the double-wall steel hanging box is integrally hoisted and lowered, so that the wall body bottom section is filled with water; the double-wall steel hanging box continues to be put down, so that the middle section of the wall body is submerged into water; continuously lowering the double-wall steel hanging box, so that the top section of the wall body is gradually submerged into water; and step 3, lowering in place. Through the reasonable design of the double-wall steel hanging box structure and the design of the positioning construction method, constant buoyancy can be provided for vertical positioning in the high-tidal-range deepwater environment, and meanwhile the advantages of being high in construction safety, flexible to operate and the like are achieved.

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.

The invention relates to a prestressed immersed tube joint, a design method and an SPMT on-vehicle barge method. According to the prestressed immersed tube joint, the transverse first prestressed steel beams are arranged in the bottom plate of the prestressed immersed tube joint, so that all the parts of the bottom plate can meet the supporting conditions of SPMT vehicles, then the SPMT vehicles can be fully distributed below the bottom plate, and enough supporting force can be provided when the SPMT vehicles are used for transporting the prestressed immersed tube joint; the cracking degree of the prestressed immersed tube joints can be reduced, so that the immersed tube joints can be transported by adopting an SPMT vehicle; the transverse second prestressed steel beam is arranged in the top plate, the second prestressed steel beam can overcome the stress influence of the first prestressed steel beam on the top plate, the arrangement form of the first prestressed steel beam and the second prestressed steel beam conforms to the load bearing form of the bottom plate and the top plate of the immersed tube joint in the operation period, and the stress state of the immersed tube joint in the operation period is met; the reinforcement quantity of the bottom plate and the top plate can be reduced, and the cost is saved.

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.

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.

The invention discloses a bunched assembly type open caisson structure, a device for sinking an open caisson and a construction method. The bunched assembly type open caisson structure comprises a plurality of quadrilateral hollow pipes. The side wall, connected with another adjacent quadrilateral hollow pipe, of each quadrilateral hollow pipe is provided with a plurality of steel strand penetrating holes in the length direction, and the steel strand penetrating holes are perpendicular to the length direction. The device for sinking the open caisson comprises a drill rod and a power device, a drill rod head is arranged at the lower end of the drill rod, and a shear fork type telescopic structure and an electromagnetic connection driving device are arranged between the drill rod and the drill rod head, so that the drill rod head can be driven by the electromagnetic connection driving device to reciprocate along the axis of the drill rod. During sinking, water sprayed from the drill rod head is stirred with the soil body cut by the telescopic spiral blade to form slurry while the telescopic spiral blade forming the scissor-type telescopic structure rotationally cuts the soil body, and then the slurry is discharged to the ground through the slurry discharging pipe. The occupied space of the ground during the construction period is reduced, and the open caisson structure in any plane shape is achieved.

The present application relates to a semi-prefabricated construction method for large deep-water caissons in a shallow dock. Concrete for a caisson base slab is poured in a dry dock, prefabricated slabs and steel trusses are mounted around the base slab to form an open box structure, then a box is towed to a bridge site, the construction of the caissons is completed by means of cast-in-place concrete pouring on the water, and finally the caisson is filled with water and sinks into place. The present application can greatly reduce the requirements for the excavation depth of the dry dock, and decrease the dredging workload of an undocking and floating channel, thereby reducing construction costs, and also facilitating shortening the construction period of the caissons.

The invention relates to an intelligent control method and device for the overall lowering plane position of a steel jacket box, and belongs to the technical field of steel jacket box construction.The intelligent control system is composed of a control terminal, a monitoring module and an intelligent adjusting module, and the monitoring module and the intelligent adjusting module are in communication connection with the control terminal; the monitoring system is used for monitoring the plane position and the overall perpendicularity of the steel jacket box, the intelligent adjusting module is used for the limiting device and the electric hydraulic jack, deviation precision requirement parameters are preset in the control terminal, and the monitoring system feeds back and transmits monitoring results to the control terminal. The control terminal compares a monitoring result with a deviation precision requirement parameter preset in the control terminal, and sends an instruction to the intelligent adjusting module according to a comparison result, so that the intelligent adjusting module intelligently adjusts and controls the electric hydraulic jack to stretch and retract to control the limiting device, and the purposes of fine adjustment of the steel jacket box and accurate adjustment of the steel jacket box are achieved. Therefore, the overall lowering time of the alignment fine adjustment is shortened.

The invention relates to an annular diaphragm wall-open caisson composite structure sinking self-adaptive deviation rectifying structure and method, and the deviation rectifying structure comprises an annular diaphragm wall-open caisson composite structure, a servo support jacking deviation rectifying device, an open caisson top back pressure jack sinking device and an open caisson sinking state monitoring and early warning device. The annular underground diaphragm wall-open caisson composite structure comprises an open caisson, an annular underground diaphragm wall and sandwich soil, the sandwich soil is arranged between the open caisson and the annular underground diaphragm wall, and the servo supporting jacking deviation correcting device comprises a servo steel supporting structure, an arc-shaped jacking frame and a limiting ring. Compared with the prior art, the method has the advantages that safe and stable sinking of the ultra-deep well structure is guaranteed, and the like.

To provide an intelligent adjustment control method, a facility, and a system particularly for an open caisson positioning settlement rope regarding the technical field of open caisson settlement construction.SOLUTION: This adjustment control method includes: an error calculation module for calculating a deviation change error with a rope A as a reference; and a width adjustment module for using PID to calculate an adjustment width of a cylinder application force, and returning to a step of determining whether the cylinder application force is within an effective range on the basis of the deviation change error.SELECTED DRAWING: Figure 1