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Press-in type open caisson construction method based on automatic control system
PendingCN120425751AFoundation testingHeight/levelling measurementAutomatic controlReal time analysis
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
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
Press-in type open caisson
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
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
Integrated grouting device and offshore wind power single pile foundation anti-scouring construction method based on indigenous microorganism precuring seabed
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.
Owner:HUANENG RUDONG BAXIANJIAO OFFSHORE WIND POWER GENERATION CO LTD +2
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
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
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
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
Bunching assembly type open caisson structure, device for sinking open caisson and construction method
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.
Owner:SHANGHAI URBAN CONSTRUCTION DESIGN & RESEARCH INSTITUTE (GROUP) CO LTD
Semi-prefabricated construction method for large deep-water caissons in shallow dock
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.
Owner:ROAD & BRIDGE INT CO LTD
Open caisson construction method suitable for soft soil foundation
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.
Owner:CHINA MCC22 GROUP CORP LTD
Steel blade angle structure of vertical open caisson
The steel blade angle structure of the vertical open caisson comprises an upper steel blade angle and a lower steel blade angle, the upper steel blade angle is defined by an upper top plate, an upper vertical plate, a first upper inclined lower plate and a second upper inclined lower plate, and the lower steel blade angle is defined by a lower inclined upper plate, a lower inclined lower plate, a lower bottom plate and a lower vertical plate; the second upper inclined lower plate and the lower inclined upper plate are connected through a fixing plate and form a steel strand channel allowing a steel strand to pass through, an arc-shaped guide plate is installed on the second upper inclined lower plate, a through hole is formed in the fixing plate, an anchor plate is fixed to the through hole of the fixing plate, a plurality of steel strand hole channels are formed in the anchor plate, and the steel strand channel is communicated with the arc-shaped guide plate. The ends, close to the through holes of the fixing plate, of the steel strand hole channels are circular holes, and the ends, away from the through holes of the fixing plate, are wedge-shaped holes. The steel blade angle structure has the advantages that one end of the steel strand passes through the steel strand channel formed by the upper steel blade angle and the lower steel blade angle and is anchored on the anchor plate in the steel blade angle structure, so that safe sinking of the vertical shaft can be ensured.
Owner:CHINA RAILWAY 15TH BUREAU GROUP CORPORATION LIMITED +2
Modularized turnover double-wall steel hanging box structure and construction method
Owner:CCCC SECOND HARBOR ENGINEERING CO LTD +1
Combined cofferdam suitable for deeply-buried bridge bearing platform foundation
The utility model belongs to the field of bridge construction foundation construction, and particularly relates to a combined cofferdam suitable for a deep-buried bridge bearing platform foundation. The combined cofferdam comprises a lower concrete cofferdam and an upper locking steel pipe pile cofferdam, and an air curtain structure for assisting the cofferdam in sinking is arranged in the combined cofferdam; a U-shaped groove is formed in the top of the concrete cofferdam, the bottom of each fore shaft steel pipe pile of the fore shaft steel pipe pile cofferdam is inserted into the U-shaped groove, and a high-strength support grouting material is poured between the U-shaped groove and the fore shaft steel pipe pile cofferdam; a plurality of annular cofferdams are arranged on the inner side of the fore shaft steel pipe pile cofferdam; the combined cofferdam structure is more reasonable in stress, safe and reliable; according to the combined cofferdam, sinking assisting measures such as a built-in air curtain and water injection ballasting in the upper locking opening steel pipe piles are adopted, it can be effectively guaranteed that the combined cofferdam can sink to the designed elevation, and the defects that a concrete cofferdam and a steel sheet pile cofferdam are combined to sink difficultly, and the suitable foundation embedding depth is not large are overcome.
Owner:CHINA TIESIJU CIVIL ENGINEERING GROUP CO LTD +1
Detachable arc-shaped bracket deviation rectifying support
The utility model relates to the technical field of constructional engineering foundations, and discloses a detachable arc-shaped bracket deviation rectifying support device for open caisson construction, which comprises a left-area detachable supporting piece, a right-area detachable supporting piece, a middle-area anchoring piece, a rubber pad, a weighing sensor, a strain sensor, a limiting hole and a balancing weight. Wherein the left-area detachable supporting piece and the right-area detachable supporting piece are vertically inserted and assembled in an open caisson limiting hole through the middle-area anchoring piece, rubber pads are pasted on the contact faces of the left-area supporting piece and the right-area supporting piece and the inner side wall of an open caisson to prevent structural damage, and the top faces of the left-area supporting piece and the right-area supporting piece are each provided with a weighing sensor. A strain sensor is installed on the external slope of the left area supporting piece. The open caisson deviation rectifying support has the advantages of being convenient to disassemble and assemble, high in safety and the like, and the use efficiency of the open caisson deviation rectifying support can be effectively improved.
Owner:NANJING SHANGTIE LOCAL RAILWAY DEV CO LTD +2
Open caisson air curtain control method and device, electronic equipment and computer storage medium
The invention provides an open caisson air curtain control method and device, electronic equipment and a computer storage medium, is applied to an open caisson air curtain intelligent cooperative self-healing control system, and relates to the technical field of bridge construction. According to the method, a foundation open caisson structure model is established based on geological and hydrological data, then an air curtain and a monitoring module are added according to a specific construction project, real-time data communication between a real object and the model is established, data are monitored in real time through the monitoring module, and a control instruction is processed and output through the model; the opening and closing of the electromagnetic valves of all the subareas of the air curtain and the air pressure of the air compressor are adjusted in real time, the abnormal condition processing time in the sinking process of the open caisson is shortened, flexible combination of the multiple adjacent air curtain subareas is achieved, manual intervention is reduced in the construction process, and the construction progress is accelerated.
Owner:CHINA FIRST HIGHWAY ENGINEERING CO LTD
Rapid deployment construction method for universal recyclable caisson reinforcing steel bars
The invention belongs to the field of port engineering construction, and particularly relates to a rapid deployment construction method for universal recyclable caisson reinforcing steel bars in prefabricated caisson reinforcing steel bar structure construction. On the basis of a modularized disc buckle support system push-pull unit, reinforcing steel bars of the outer wall and the inner partition wall of the caisson are integrally bound by combining an assembly type reinforcing steel bar binding frame and an assembly type reinforcing steel bar hoisting frame and presetting a reinforcing steel bar binding mould, and the distance between the reinforcing steel bars and a reinforcing steel bar protection layer are controlled within the controlled range; after the binding frame is separated, force is evenly transmitted through the lifting frame, and the whole steel reinforcement framework is lifted away from the binding clamping fixture through a crane and installed at the preset position. According to the method, the requirement for high-altitude operation is remarkably reduced, the safety of a construction site is improved, meanwhile, accurate arrangement of the steel bars and the thickness of a protective layer are ensured through accurate pre-binding control, and therefore the overall quality and durability of the structure are improved.
Owner:CCCC FIRST HARBOR ENGINEERING CO LTD +2
Prefabricated assembled open caisson, open caisson shaft assembling method and open caisson bottom sealing method
The invention belongs to the technical field of open caissons, and discloses a prefabricated assembly type open caisson, an open caisson shaft assembly method and an open caisson bottom sealing method. The prefabricated open caisson comprises a fore shaft ring beam, a shaft and a bottom sealing layer, wherein the fore shaft ring beam is connected with the ground; the shaft comprises a blade foot ring, a connecting ring, a plurality of standard rings and a fore shaft ring which are sequentially connected from bottom to top, the blade foot ring is used for cutting a soil body and sinking to the ground, and the fore shaft ring is connected with a fore shaft ring beam; the bottom sealing layer comprises a first annular piece, a second annular piece and a circular bottom sealing piece which are sequentially connected from outside to inside, the outer ring of the first annular piece is connected with the inner ring of the connecting ring, and the first annular piece is formed by sequentially connecting a plurality of first fan-shaped connecting parts in the annular direction; and the second annular piece is formed by sequentially connecting a plurality of second fan-shaped connecting parts in the annular direction, and the first fan-shaped connecting parts and the second fan-shaped connecting parts are connected in a staggered joint mode, so that the bottom sealing layer is constructed to be of a bowl-shaped structure, the construction period can be shortened, the project quality can be improved, and the safety risk can be reduced.
Owner:PIPECHINA SOUTH CHINA CO +1
Construction method of caisson prefabrication automatic bar penetrating device
The invention discloses a construction method of an automatic bar penetrating device for caisson prefabrication, and relates to the technical field of building construction. Comprising the steps of device structure size adjustment, hoisting platform trial hoisting, bar penetrating facility trial operation, longitudinal steel bar paving and sorting, device first parking, first row bar penetrating, device stepping lifting, device bar penetrating and bar penetrating completion. Through tower crane lifting displacement and manual traction positioning, a double-strand rope with scale marks is adopted at the front end of the lifting platform for lifting limiting, the lifting height of each step is controlled to be consistent with the rib penetrating vertical distance, the rib penetrating position is rapidly aligned, and the rib penetrating efficiency is improved; the paving and discharging mechanism paves and sorts longitudinal steel bars in advance, welding seam positions of adjacent steel bars are prevented from being overlapped, the engineering quality is guaranteed, the single-time bar penetrating number arrangement and bearing requirements of the caisson are met, and the hoisting and lifting displacement frequency is reduced. Through remote control over transverse movement, overturning and longitudinal movement, automatic operation is achieved, and the labor intensity is greatly reduced; in the whole hoisting process, personnel do not need to enter the hoisting platform, and safe construction is guaranteed.
Owner:NO 3 ENG COMPANY LTD OF CCCC FIRST HARBOR ENG COMPANY +1
Concrete pouring auxiliary device for bank protection caisson forming
The invention provides a concrete pouring auxiliary device for bank protection caisson forming. The device comprises a connecting frame, a sealing cover, an adjusting assembly and a fixing assembly, the connecting frame comprises an outer frame and an inner frame, the sealing cover comprises a shell, a feeding port is formed in the shell, the shell is fixed to the top of the connecting frame, and a hollow area of the shell communicates with a concrete channel between the outer frame and the inner frame; the adjusting assembly is located in the shell and comprises a conical block fixedly connected to the top of the inner frame and a concrete adjusting and controlling mechanism arranged on the conical block, and the multiple sets of fixing assemblies are arranged on the edge of each side of the connecting frame in a scattered mode. Through the arrangement of the shell, under flow guide of the conical block, pouring is dispersed, the first motor drives the shifting rod to rotationally shift concrete on the conical block, the discharging speed is effectively controlled, it is ensured that the concrete is evenly distributed in a formwork, gaps and bubbles are reduced, and the compactness and strength of the concrete are improved.
Owner:WUHAN SURVEYING GEOTECHN RES INST OF MCC
Deep foundation pit elevator shaft and sump nest support forming construction process
This invention relates to the field of deep foundation pit support construction technology, specifically a nested support construction process for deep foundation pit elevator shafts and sump pits. It solves the problem that traditional caisson waterproofing technology is prone to failure due to pit wall collapse in highly permeable gravel strata, making it difficult to create stable construction conditions. The process includes a steel caisson support structure, within which a steel caisson waterproofing structure is nested. This steel caisson waterproofing structure is used in conjunction with the steel caisson support structure for nested construction. This invention, through the nested cooperation of the steel caisson support structure and the steel caisson waterproofing structure, and the injection of a self-compacting concrete filling layer, achieves an integrated support and waterproofing effect during construction. It creates a stable, dry, and enclosed working space in easily collapsible, highly permeable strata, solving the problem of failure of traditional single waterproofing technology and creating safe and reliable conditions for subsequent structural construction.
Owner:BEIJING URBAN & RURAL CONSTR GRP CO LTD +1
Prefabricated reinforced concrete open caisson and mounting method thereof
The invention discloses a prefabricated reinforced concrete open caisson and a mounting method thereof, and belongs to the technical field of open caissons, the prefabricated reinforced concrete open caisson comprises a main body, the main body comprises a plurality of composition plates, the composition plates comprise composition bodies, the tops of the composition bodies are provided with grooves, the bottoms of the composition bodies are fixedly connected with convex blocks, and the convex blocks are fixedly connected with the main body. And the inner wall of the groove is movably connected with the protruding block, connecting plate blocks are installed on the two sides of the multiple composition plate blocks correspondingly, grooving plate blocks are installed on two of the composition plate blocks, and supporting mechanisms are installed in the multiple composition plate blocks correspondingly. By designing the composition plate, the connecting plate, the slotting plate and the supporting mechanism, small plates of prefabricated reinforced concrete can be connected for rapid installation, meanwhile, the normal use function can be guaranteed, meanwhile, the hollow design can be adopted, rapid conveying can be conveniently conducted during transportation, and the installation speed is increased.
Owner:ANHUI XINLIN PIPE TECHNOLOGY CO LTD
Open caisson foundation soil taking platform
The utility model discloses an open caisson foundation soil taking platform which comprises soil taking units, anchoring steel bars and anchor plates, the anchoring steel bars are embedded in the top of an open caisson partition wall, the anchor plates are evenly fixed to the open caisson partition wall through the anchoring steel bars, and the two soil taking units are symmetrically arranged on the two sides of an open caisson through the anchor plates. The soil sampling unit comprises distribution longitudinal beams, distribution cross beams, longitudinal pressure-bearing beams and bridge decks, the two distribution longitudinal beams are arranged on the adjacent open caisson partition walls in the length direction of the open caisson and fixed to the anchor plates, and the multiple distribution cross beams are arranged between the two distribution longitudinal beams in parallel at intervals; the longitudinal pressure-bearing beams extend in the length direction of the distribution longitudinal beams and are fixed to the distribution cross beams, and the bridge deck slabs are laid on the longitudinal pressure-bearing beams and used for containing movable soil sampling equipment. According to the utility model, only two groups of soil sampling units need to be arranged on the top surface of the open caisson wall, the soil sampling range can cover the whole open caisson plane, complicated water pipes, air pipes, mud discharge pipes, cables and the like are avoided, and the occupied construction space is reduced.
Owner:CCCC SECOND HARBOR ENGINEERING CO LTD +1
Remote excavation multitask system for pneumatic caisson construction
To provide a remote excavation multitask system capable of efficiently and correctly performing operations.SOLUTION: A remote excavation multitask system S is a remote excavation multitask system for pneumatic caissons for allocating operators w to a plurality of excavators ec (20), ... and comprises: available work dates and times of operators w of the excavators ec (20); an excavation work plan for each site c; and a control device 30 that creates a personnel allocation plan by setting an objective function for improving the quality of pneumatic caissons 1 based on the available work dates and times and the excavation work plan. As the objective function, it is preferable to calculate the sum of differences between skill values of the operators w in charge of the excavators ec (20) and required skill values for all the excavators ec (20) and all the sites, and to create the personnel allocation plan so that this sum is minimized.SELECTED DRAWING: Figure 2
Owner:DAIHO CORP TOKIO TOKYO JP