900 results about "Caisson" 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 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.

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.

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 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.

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.

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 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 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 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.

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.

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 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.

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 provides a pipe jacking working well construction method for soft clay geology. The pipe jacking working well construction method comprises the steps that S1, replacement filling and cushion layer construction are conducted in a construction area corresponding to a working well; s2, a formwork is erected for blade foot pouring, S3, excavation is conducted from the middle of the open caisson to the periphery in a layered mode, the open caisson is filled with backfill sand for back pressure after final sinking, and well wall heightening is conducted after backfill; s4, after the backfill sand is cleaned, sinking and heightening are carried out for multiple times until excavation is carried out to a preset elevation; s5, riprapping and leveling the well bottom, and then moving from the well edge to the middle for layered pouring to form a back cover; and S6, after water pumping is completed, reinforcing steel bars are bound, concrete is poured, and a bottom plate is formed. The mode that symmetrical excavation is conducted and soil bodies are reserved along the periphery of a blade foot to form a soil embankment is adopted, the well wall evenly sinks under the action of self weight, and the problems that the well wall inclines and cracks are caused by uneven sinking are avoided.

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 invention relates to a floating offshore platform (1) configured for offshore manufacturing and / or assembly and / or maintenance and / or disassembly of a floating wind turbine (2) comprising a floating foundation (4), a tower (6), a nacelle (8) and at least one blade (10), the platform (1) comprises at least one first area (22) dedicated to the manufacture of a floating foundation (4) configured to accommodate a tower drum (6), at least one second area (24) dedicated to the assembly and / or disassembly of the floating foundation (4) and the tower drum (6), and a third area (26) equipped with a lifting platform capable of being at least partially submerged underground, the platform (1) comprising a plurality of integral floating caissons (16).

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 discloses an underwater tunneling pose measurement and control method and system for an open caisson type vertical shaft heading machine, and the method comprises the steps: before the open caisson type vertical shaft heading machine is installed, installing a pipeline rack and at least three groups of recovery winch systems for suspending the heading machine, correspondingly installing a pose measurement and control assembly of the open caisson type vertical shaft heading machine, and setting an early warning value; the heading machine pose measurement and control assembly comprises a pull rope displacement sensor, an accelerometer, a gyroscope and a controller; in the process of executing pose measurement and parameter calculation operation, coordinate correction after heading motion state data of the heading machine is considered, and data of an accelerometer and a gyroscope are fused to correct the heading pose of the open caisson type vertical shaft heading machine. Automatic measurement of the open caisson type vertical shaft heading machine under the non-drainage condition can be achieved, real-time deviation rectification is achieved, the heading precision is improved, the authenticity and reliability of the heading direction of the open caisson type vertical shaft heading machine are ensured, real-time deviation rectification is conveniently achieved, and the heading precision is improved.

The invention discloses delayed coagulation type super-early-strength quick-hardening mortar and a preparation method thereof, and relates to the technical field of building materials, a shell-core structure targeted modified early strength agent is designed, a staged dry-wet mixing technology is adopted, seabed in-situ curing is combined, cooperation of mortar delayed coagulation construction and super-early-strength development is achieved, and the construction efficiency is improved. According to the present invention, with the design of the targeted modified early strength agent, the surface delayed coagulation shell and the core early strength core structure are formed through the grafting reaction of the sodium nitrite and the hydroxyl carboxylic acid monomer, and the 15-25% accurate grafting rate control is matched, such that the antagonism problem of the traditional early strength agent and the delayed coagulation agent can be solved, and the deep sea open caisson grouting temporary support requirement can be met; in the deep sea environment, the delayed coagulation shell can guarantee a construction window of 75-105 min, the requirement for long-distance grouting of the seabed is met, deep sea high pressure can trigger the delayed coagulation shell to be broken, the core early strength core rapidly activates cement to be hydrated, and the mortar can rapidly form the requirement for rapid bearing of the open caisson temporary support with enough strength.

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

The invention relates to the technical field of open caisson construction, in particular to an open caisson construction method suitable for a soft soil foundation, which comprises the following steps: excavating a foundation pit, pre-reinforcing the foundation, constructing a cushion layer, manufacturing an open caisson in sections, arranging a monitoring system, sinking in stages and partial pressure, dynamically adjusting hydraulic jacking force and finally sinking and sealing bottom. Wherein dynamic adjustment of hydraulic jacking force is realized through arrangement of a monitoring system, which is a main invention point of the invention, during sinking, data is fed back through a tilt angle sensor, a laser displacement meter and an earth pressure sensor, the jacking force is corrected according to a formula, and dynamic correction and emergency control are combined; accurate and intelligent control of open caisson construction is achieved, and the safety, efficiency and quality of soft soil foundation open caisson construction are improved.

The invention discloses an open caisson segment bending resistance testing method for a sinking type vertical shaft tunneling construction method. The open caisson segment bending resistance testing method comprises the steps that S1, multi-dimensional parameters of an open caisson segment to be tested and a vertical shaft body are obtained; s2, selecting a proper soil pressure coefficient; s3, calculating a load condition acting on the to-be-tested open caisson segment; s4, defining boundary conditions of the to-be-detected open caisson duct piece; s5, the maximum bending moment borne by the open caisson segment to be measured is obtained; s6, the state of the single segment placed on the bending resistance test loading platform is simulated, and boundary conditions of four corner points of the single segment are set according to the open caisson segment state of the sinking type vertical shaft tunneling construction method; s7, determining the application area of the uniformly distributed load; and S8, adjusting the size of the uniformly distributed load until the maximum bending moment of the current single segment is the same as the maximum bending moment of the to-be-tested open caisson segment under the double service condition, and obtaining the design load and the maximum load. The research on the service characteristics of the VSM construction method open caisson segment is more scientific and accurate.

The invention provides a side pressure simulation test device and test method in the sinking process of an open caisson, and relates to the technical field of civil engineering, and the test device comprises a centrifugal device, a test model and a sinking soil sampling device. The centrifugal device is composed of a driving source, a rotating arm and a hanging basket, the hanging basket fixes the test box, an upper cavity and a lower cavity are formed in the test box, the upper cavity is filled with test soil, the open caisson model is placed in the test soil, and detection elements are arranged on the inner wall and the outer wall. The vertical shaft penetrates through the soil body and is connected with the open caisson inner cavity and the lower cavity. The sinking soil taking device drives the vertical shaft to move downwards through the pressing assembly, and the soil taking assembly cuts and discharges soil through a soil cutter. Through centrifugal acceleration, dynamic excavation and lateral pressure monitoring, the device truly simulates lateral pressure change in the sinking process of the open caisson, captures interaction between the open caisson and a soil body, provides data support, helps to optimize a design scheme, and improves construction safety and efficiency.