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102 results about "Dynamic compaction" patented technology
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Dynamic compaction is a method that is used to increase the density of the soil when certain subsurface constraints make other methods inappropriate. It is a method that is used to increase the density of soil deposits. The process involves dropping a heavy weight repeatedly on the ground at regularly spaced intervals. The weight and the height determine the amount of compaction that would occur. The weight that is used, depends on the degree of compaction desired and is between 8 tonne to 36 tonne. The height varies from 1m to 30m.
Bridge deck system multi-subentry project integrated construction process optimization method
The invention discloses a bridge deck system multi-sub-project integrated construction process optimization method. The method comprises the following steps: step 1, optimizing a process based on a BIM (Building Information Modeling); step 2, carrying out combined measurement by adopting GNSS-RTK and laser scanning; 3, bridge deck pavement construction and expansion joint installation are conducted on the basis of the combined measurement result; 4, the paver is linked with the reserved groove for positioning, the flatness error can be effectively controlled, and the bridge deck pavement quality is guaranteed; 5, guardrail modular construction is carried out; sixthly, seamless connection, layered backfilling and dynamic compaction are conducted on the butt strap behind the abutment; 7, whole-process environmental protection and finished product protection; 8, performing three-dimensional scanning comparison; step 9, block chain data archiving; the method has the beneficial effects that construction simulation, sequence adjustment and dynamic monitoring are carried out based on the model optimization process logic, the problems of process crossing and construction period conflict can be recognized and eliminated by simulating the construction process in advance, accurate positioning of each subentry project is ensured, and the overall coordination of construction is improved.
Owner:SHENZHEN ZHONGTIEERJU ENG CO LTD
Foundation construction material and dynamic compaction construction method
The invention relates to the technical field of building construction, in particular to a foundation construction material and a dynamic compaction construction method.The construction method comprises the following steps that S1, an early-stage preparation stage is conducted; s2, a trial compaction and parameter optimization stage; s3, a main body construction stage; s4, a multi-field coupling maintenance stage; s5, a foundation quality detection stage; and S6, an acceptance and filing stage. Through intelligent sensing and dynamic parameter regulation and control, self-adaptive optimization of the tamping process is achieved, over-tamping or under-tamping is avoided, and the foundation bearing capacity is improved by 15%-20%; the layered filling design of the gradient material is matched with different depth mechanical requirements, the grading continuity coefficient is larger than or equal to 0.5, and the compactness of the pier body is improved by 25% or above; an innovative Q value evaluation formula integrates multi-dimensional parameters, the detection accuracy rate reaches 90% or above, and the rework rate is remarkably reduced; the maintenance period is shortened to 7 days through the multi-field coupling maintenance technology, and the construction efficiency is improved by 50%; and the material cost is reduced by 30% by recycling the construction waste, and the method has economical efficiency and environmental protection performance and is suitable for various complex foundation treatment sites.
Owner:SHENZHEN RUNYU CONSTR ENG CO LTD
Dynamic compaction construction quality evaluation and analysis system
The invention relates to the technical field of construction quality evaluation, in particular to a dynamic compaction construction quality evaluation and analysis system which comprises the steps of collecting compaction vibration signals, screening out abnormal segments, extracting frequent fluctuation sections, counting peak value dense areas, recognizing impact concentration sections, tracking amplitude fluctuation changes, positioning energy accumulation areas and calculating the amplitude change rate. And the position of an inflection point is calibrated, a frequency change track is compared, a compaction state area is divided, and a compaction grade distribution map is generated. According to the method, amplitude change rate mutation fragments are eliminated, stable response sections are extracted, peak aggregation areas are divided according to time, impact concentration sections are identified, the amplitude continuous fluctuation trend is tracked, energy concentration areas are delimited, state turning nodes are positioned based on amplitude change rate comparison, and frequency span and fluctuation duration characteristics are combined. Compacting state areas are classified in a layered mode, and a compacting distribution structure is constructed.
Owner:国网宁夏电力有限公司固原供电公司 +1
In-situ solidification construction method for highway shallow foundation in water-rich section of permafrost region
The invention discloses an in-situ solidification construction method for a highway shallow foundation in a water-rich section of a permafrost region. The in-situ solidification construction method comprises the following steps: step 1, preparation at the early stage of construction; secondly, steel sheet pile enclosure water insulation is conducted; thirdly, in-situ soil solidification construction is conducted; fourthly, dynamic compaction encryption treatment is conducted; step 5, quality detection and molding acceptance inspection; and step 6, subsequent environmental protection and safety guarantee. Three dimensions of a steel sheet pile waterproof technology, a high-weather-resistance composite curing material in-situ curing technology and a dynamic compaction technology are integrated, and a set of systematized and standardized construction scheme is formed. According to the multi-dimensional combined method, the foundation treatment effect is improved, the comprehensiveness and pertinence of construction are enhanced, and a more effective solution is provided for road foundation treatment in the water-rich section of the permafrost region.
Owner:RES INST OF HIGHWAY MINIST OF TRANSPORT +1
Dynamic compaction construction intelligent monitoring and self-adaptive control method based on physical information neural network
The invention relates to a dynamic compaction construction intelligent monitoring and self-adaptive control method based on a physical information neural network, and the method comprises the steps: arranging a vibration sensor array in a construction safety region, collecting a compaction vibration signal in real time, and extracting time domain, frequency domain and spatial propagation characteristics; constructing a physical information neural network model, taking a soil elastic wave propagation equation as a physical constraint, taking vibration characteristics and monitoring point space coordinates as input, and predicting three-dimensional distribution of soil physical property parameters; based on the predicted soil body parameters, calculating the distribution and development trend of the bearing capacity of the foundation by adopting a Taisha foundation bearing capacity theory; a multi-target optimization model with the bearing capacity reaching the standard, the minimum energy consumption and the shortest time as targets is established, and follow-up tamping parameters are optimized; and construction is executed according to the optimized parameters, and data and model parameters are continuously updated. Compared with the prior art, the problems that in traditional dynamic compaction construction, the soil body state cannot be observed, and optimization lacks theoretical support are solved, and intelligentization and accurate control over the construction process are achieved.
Owner:SHANGHAI JIAOTONG UNIV +2
Intelligent operation system of dynamic compactor
The utility model discloses an intelligent operation system of a dynamic compactor, which comprises a positioning device arranged on the dynamic compactor and used for receiving and sending the position information of the dynamic compactor; the positioning unit is connected with the positioning device and is used for positioning the dynamic compaction machine and the compaction point position; the data transmission unit is connected with the positioning unit and used for transmitting and recording the position information of the dynamic compaction machine; the sensor unit is arranged on the dynamic compactor and is used for acquiring the operation information of the dynamic compactor; the controller is arranged on the dynamic compactor and used for receiving the control signal and controlling the dynamic compactor to work; and the remote control unit is respectively connected with the sensor unit, the controller and the data transmission unit, and is used for receiving the running state data information of the dynamic compactor, generating a control signal and sending the control signal to the controller to control the action of the dynamic compactor. According to the invention, 24-hour uninterrupted work can be remotely controlled, and normal operation can be carried out in rainy and snowy weather, so that the working efficiency is effectively improved, and the investment of labor cost is reduced.
Owner:TAIZHONG GRP (XIAN) EQUIP TECH CO LTD
Calculation method for digging and tedding thickness of soil body of low-liquid-limit clay dam foundation
The invention relates to the technical field of dam foundation treatment, and discloses a low-liquid-limit clay dam foundation soil body excavation tedding thickness calculation method, which comprises the following steps: firstly, collecting an undisturbed soil sample and a disturbed soil sample, and obtaining physical and mechanical parameters through an indoor test; performing a light compaction test by using the disturbed soil sample, and calculating a first soil layer compaction coefficient according to the height change before and after compaction; an indoor dynamic compaction physical model meeting the similarity criterion is constructed based on the white Jinhan Pi theorem, the conversion relation between model compaction energy and on-site compaction energy is deduced through a geometric similarity coefficient, a time similarity coefficient and a quality similarity coefficient, and a second soil layer compaction coefficient is measured; and the maximum value of the two compaction coefficients is taken as a final calculation parameter, and the excavation tedding thickness is calculated in combination with the design thickness of the dam foundation bearing stratum. According to the method, the indoor test is used for replacing field trial compaction, so that the test cost is reduced, two measurement schemes of a compression modulus method and an accumulated compaction settlement method are provided, and the calculation result is more in line with engineering practice.
Owner:NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER +1
Construction method for permafrost block stone dynamic compaction replacement composite foundation
The invention discloses a construction method of a permafrost block stone dynamic compaction replacement composite foundation. The construction method comprises the following steps: step 1, a project construction preparation stage; secondly, a dynamic compaction scheme is designed; 3, surface layer freezing breaking and drainage system construction; step 4, preparation before dynamic compaction construction; step 5, guide hole construction; sixthly, dynamic compaction construction is conducted; step 7, construction recording; step 8, acceptance assessment and result archiving; and ninthly, quality, safety and environmental protection control in the construction process is conducted. The invention innovatively provides a three-stage reinforcing process of'guide hole dumping of block stones, dynamic compaction and full compaction ', a replacement body with a drainage function is formed by prefabricating guide holes and filling hard rubbles and broken stones with good gradation, a soft soil layer is effectively replaced and compacted, and a composite foundation with excellent bearing performance is constructed.
Owner:RES INST OF HIGHWAY MINIST OF TRANSPORT +1
Dynamic compaction equipment and construction methods for soft soil foundations
This invention relates to the field of soft soil foundation reinforcement technology, specifically to a dynamic compaction construction device and method for soft soil foundations. The device includes a perforating rod and an operating assembly. The operating assembly includes a fixed plate, positioning strips, and a first movable block. The fixed plate is coaxially fixed to the top of the perforating rod, and a first fixing hole is formed on the side wall of the fixed plate. Two positioning strips are slidably connected, each with a circular through hole and a guide ring fixedly mounted. Each positioning strip also has a buckle that engages with the first fixing hole. The first movable block is slidably positioned at the center of the side of the fixed plate away from the perforating rod. This invention can limit the direction of the artificial channels generated by the perforating rod while adapting to different construction requirements. It ensures that the drainage direction of soil moisture under subsequent compaction is uniformly oriented in one direction, ensuring good overall drainage without requiring additional manpower and resources.
Owner:CHIFENG BRANCH OF CHINA NATIONAL NUCLEAR LAND ECOLOGICAL TECHNOLOGY CO LTD
A method for determining a coal-based solid waste disposal rate of an underground filling working face
This invention discloses a method for determining the coal-based solid waste disposal rate in underground backfilling faces. The coal-based solid waste disposal rate is the ratio of the amount of coal-based solid waste disposed of in the backfilling faces to the total amount of coal-based solid waste in the mine. The determination steps are as follows: First, the total amount of coal-based solid waste Q in the mine is calculated; then, based on the proportion of backfilling materials used in the mine, the proportion of coal-based solid waste in the backfilling materials is determined; the layout of each backfilling face in the mine is determined, and the backfilling space volume V is calculated; the weak dynamic force P and the number of actions x of the backfilling support on the backfill body are determined, and a weak dynamic compaction test of the backfilling material is conducted to determine the bulk density ρ of the backfilling material after the weak dynamic action; finally, the total amount of coal-based solid waste Q disposed of in each backfilling face in the mine is calculated. c Finally, the coal-based solid waste disposal rate η is calculated. This invention quantitatively determines the coal-based solid waste disposal effect in the backfilling face through the coal-based solid waste disposal rate, and the results can provide a basis for the design of mine backfilling systems and the evaluation of backfilling effects.
Owner:CHINA UNIV OF MINING & TECH +1
A dynamic compaction device and a dynamic compaction method for reinforcing liquefied ground
The application relates to a dynamic compaction device and a dynamic compaction reinforcement method for a strong vibration liquefied foundation, and belongs to the field of highway construction. The dynamic compaction device comprises a dynamic compaction machine body and a rammer, further comprises a hole blocking mechanism arranged on the rammer, the hole blocking mechanism comprises a hole blocking pipe and a bag arranged on the side wall of the hole blocking pipe, the hole blocking pipe is connected with the side wall of a ventilation hole of the rammer, and an adjusting assembly for adjusting and controlling the inflation of the bag is arranged on the rammer. The hole blocking mechanism is arranged, so that the soil and other impurities remaining in the ventilation hole are discharged from the ventilation hole in time after the rammer leaves the ground, so that the ventilation hole of the rammer is not prone to storing soil, and the purpose of improving the dynamic compaction reinforcement construction efficiency is achieved. The application further provides a dynamic compaction reinforcement method for a strong vibration liquefied foundation, and the method has the advantages of high construction efficiency.
Owner:SHANDONG LUQIAO CONSTR
Strong vibration liquefied foundation dynamic compaction reinforcing device
The invention discloses a strong vibration liquefied foundation dynamic compaction reinforcing device which comprises a loading machine, a fixing frame, a lifting frame, a tamping hammer and a hydraulic lifting rod. The fixing frame is fixedly arranged on one side of the loading machine, and the lifting frame is installed in the fixing frame in a sliding mode. The tamping hammer is arranged at the bottom of the lifting frame; one end of the hydraulic lifting rod is arranged on the fixing frame, and the other end of the hydraulic lifting rod is arranged on the lifting frame; a waste soil recycling mechanism is arranged on the lifting frame, the waste soil recycling mechanism comprises a waste soil collecting unit and a crushing and storing unit, and the waste soil collecting unit is arranged in the lifting frame and used for collecting waste soil and broken stones generated in the tamping process; and the crushing and storing unit is arranged on the outer side of the lifting frame and used for storing and crushing the waste soil and the broken stones collected by the waste soil collecting unit and processing the waste soil and the broken stones into granular materials for foundation reinforcement. The device can collect waste soil and gravel gathered in the tamping process of the tamping hammer, follow-up layered backfilling is conducted, and operation is easy and convenient.
Owner:CHINA CONSTR SECOND ENG BUREAU LTD +1
Asphalt mixture coarse aggregate clearance rate determination method based on rotary compactor
PendingCN121141466AMaterial testing goodsPermeability/surface area analysisDynamic compactionRoad engineering
The invention relates to the technical field of road engineering, in particular to an asphalt mixture coarse aggregate clearance rate determination method based on a rotary compactor. Comprising the following steps: preheating and dry-mixing screened coarse aggregate to form a primary skeleton mixture; then adding hot asphalt and carrying out wet mixing to prepare a uniformly-coated pre-coated mixture; loading the mixture into a test mold layer by layer according to a trisection method, and leveling; a rotary compactor is adopted for dynamic compaction according to set parameters, and the height change of each time of compaction is recorded in real time; based on the height data, calculating the relative density of coarse aggregate gaps in the test mold and the skeleton void rate VCAn under different compaction times; after a VCAn-compaction frequency relation curve is drawn, the characteristic compaction frequency corresponding to the intersection point of the VCAn-compaction frequency relation curve is determined; and finally, the clearance rate VCA0 is read. According to the method, the skeleton stable points are scientifically defined innovatively through the asymptote intersection points, manual errors and aggregate crushing are avoided, the test precision and the engineering applicability are remarkably improved, and a high-reliability parameter basis is provided for asphalt mixture design.
Owner:GANSU CHANGLONG HIGHWAY MAINTENANCE TECH RES INST CO LTD +1
Dynamic compactor construction intelligent monitoring method, system and device
The invention relates to the technical field of dynamic compaction quality monitoring, in particular to an intelligent monitoring method, system and device for construction of a dynamic compaction machine, and the method comprises the steps: collecting a compaction image of the dynamic compaction machine for performing each compaction operation on each target compaction position, and recognizing a target compaction center and a compaction area of the compaction image; and the ideal center and the ideal radius of the tamped area; the relative tamping deviation distance of the tamping image and the tamping instability of the same target tamping position are determined; the tamping deviation ratio of the target tamping position is determined, and the construction standard degree of the target tamping position is determined in combination with the tamping instability; and determining the dynamic compaction qualification degree of the dynamic compaction machine according to the number of the target compaction positions where construction of the dynamic compaction machine is completed and the difference between the construction standard degrees of the target compaction positions, and obtaining the monitoring result of the construction of the dynamic compaction machine according to the dynamic compaction qualification degree of the dynamic compaction machine. The precision of monitoring the dynamic compaction construction effect of the dynamic compaction machine can be improved.
Owner:XIAN YINGHUO SOFTWARE TECH CO LTD
Deep backfill foundation ramming area limiting anchoring grid
The utility model discloses a kind of deep backfill foundation ramming area limiting anchoring grating, including at least one grating unit, it includes the rectangular frame enclosed by basalt fiber bundle, rectangular frame outside is provided with the fixing piece for connecting support pole or adjacent grating unit, several sign blocks corresponding with ramming point position are set in rectangular frame, sign block includes the circular frame enclosed by basalt fiber bundle, circular frame is provided with the sign structure for indicating ramming sequence formed by polyurethane fiber bundle, rectangular frame and circular frame are connected together by warp and weft net formed by basalt fiber bundle.The utility model limits by the sign block of grating unit inner arrangement ramming point, guarantees the drop point position of heavy hammer of dynamic compaction method construction, drop hammer sequence and ramming number of times, improves dynamic compaction method construction normative, improves foundation anti-deformation capacity, improves the overall stress uniformity of tamping filler, reduces the occurrence of foundation uneven settlement phenomenon.
Owner:HENAN PROVINCIAL COMM PLANNING & DESIGN INST CO LTD +2
A device for detecting deformation in a dynamic compaction process of moraine
The utility model discloses a kind of moraine strong compaction process deformation detection devices in the technical field of detection equipment, including base, the top of base is fixedly installed with guide rail, electric slide is slidably connected on the guide rail, the top of electric slide is fixedly connected with top plate, horizontal bar is provided on the top plate, and the horizontal bar is connected between top plate through drive assembly.Using, staff moves horizontal bar and range finder to the top of recess through electric slide, then the position of range finder can be adjusted by adjusting assembly according to recess size, then horizontal bar can be driven to move range finder by drive assembly, so as to adjust the position of range finder and make range finder swing, and then range finder can detect different positions inside recess, improve detection range and work efficiency, so as to obtain more data to improve measurement accuracy.
Owner:TIBET AGRI & ANIMAL HUSBANDRY COLLEGE +1
Tamping hammer for dynamic compaction machine
Owner:ZHEJIANG KAIYE MUNICIPAL GARDEN CONSTR CO LTD
Continuous dynamic compaction foundation reinforcement treatment construction method and system
The invention provides a continuous dynamic compaction reinforcement foundation treatment construction method and system, and belongs to the field of building construction. According to the technical scheme, the method comprises the steps of collecting multi-source geological survey data to establish a digital twinborn body; virtual dynamic compaction training is carried out in the digital twin body, and an initial construction strategy is output; obtaining construction response data, and updating state parameters of the digital twinborn body; generating an optimization construction instruction based on the updated digital twinborn body; and the dynamic compaction equipment is controlled to execute the optimized construction instruction to complete compaction operation, and continuous construction is achieved. The method has the advantages that intelligent closed-loop control over the whole dynamic compaction construction process is achieved by combining the digital twinborn body and the real-time data assimilation technology, compaction parameters are adjusted in real time according to the actual response of the soil body in the construction process, the construction effect is ensured, equipment path planning is optimized through the reinforcement learning algorithm, and the construction efficiency is improved. The problem of equipment shutdown standby in a traditional construction method is solved, and the overall efficiency and safety of dynamic compaction reinforcement construction are effectively improved.
Owner:BEIJING JINGANG ROAD ENGINEERING CONSTRUCTION CO LTD +1
Deep and thick filling soil settlement control and prediction method under dynamic compaction impact effect
PendingCN121936107ADesign optimisation/simulationSpecial data processing applicationsSoil scienceDynamic compaction
The invention relates to the technical field of foundation settlement prediction, in particular to a deep filling soil settlement control and prediction method under the action of dynamic compaction impact. Comprising the following steps: carrying out construction period settlement double-track prediction through fusion of an improved hierarchical summation method and FLAC3D numerical simulation based on a Duncan-Zhang constitutive model; constructing a post-construction settlement quantitative model, establishing a secondary consolidation settlement prediction formula considering the time effect, and performing post-construction settlement quantitative prediction; correction prediction is carried out, and a prediction result is corrected by adopting a practical correction coefficient matrix for dynamic compaction over-consolidated soil settlement calculation; four-in-one closed-loop control is adopted, a closed loop from prediction, control to verification is formed, and construction parameters are dynamically adjusted; through the mode, under the action of dynamic compaction impact, the settlement prediction precision of the deep and thick soil filling foundation is high, a complete technical closed loop from early-stage prediction, middle-stage construction control to later-stage monitoring verification is formed, and comprehensive and real-time prediction can be achieved.
Owner:SICHUAN CHUANJIAN GEOTECHNICAL SURVEY & DESIGN INST
Dynamic compaction replacement construction method for shallow layer in water
The invention belongs to an in-water shallow layer dynamic compaction replacement construction method, which comprises the following steps of: partially digging out an in-water shallow layer weir base riverbed covering layer on the in-water shallow layer of a weir base under the condition that a cofferdam is not closed, replacing and filling stones, planting piles and carrying out dynamic compaction treatment construction, and carrying out dynamic compaction replacement construction on the in-water shallow layer covering layer, so that the construction can be carried out 8-15 months ahead of time; compared with the prior art, the method has the advantages that the construction condition of the upstream cofferdam without a dry land can be achieved, the weir foundation compaction project is simplified and convenient, the project cost is greatly reduced, and the method has a good using effect and has the advantages of saving labor and time during construction, being simple in construction, high in speed, saving materials, high in efficiency and high in practicability.
Owner:CHINA FIRST HIGHWAY ENGINEERING CO LTD +1
Soft soil foundation dynamic consolidation construction device
The application belongs to the technical field of soft soil foundation reinforcement and provides a soft soil foundation dynamic compaction construction device, which comprises upper and lower shells connected in sequence from top to bottom, a perforating unit, an aggregate groove and a propellant groove are arranged in the perforating unit, the aggregate groove is arranged above the propellant groove, the aggregate groove and the propellant groove are communicated through a communication hole, and a discharge valve is arranged at the bottom of the communication hole; the device further comprises a rotating shaft and a blade structure, the rotating shaft is rotatably arranged in the aggregate groove, the bottom end of the rotating shaft extends into the propellant groove, and the blade structure is fixedly connected with the bottom end of the rotating shaft. In the device, the impact force generated after the propellant is ignited and exploded can drive the blade structure to rotate, and then drive the rotating shaft to rotate, and the rotation of the rotating shaft can disturb the aggregate in the communication hole and the aggregate groove, so that the aggregate in the aggregate groove can smoothly fall into the propellant groove, and then the aggregate can be quickly filled into the perforation.
Owner:CENT & SOUTHERN CHINA MUNICIPAL ENG DESIGN & RES INST CO LTD
Hydraulic reclamation foundation treatment method based on cooperation of high-energy-level dynamic compaction and concrete pipe piles
The invention provides a hydraulic reclamation foundation treatment method based on cooperation of high-energy-level dynamic compaction and concrete pipe piles, and belongs to the technical field of geotechnical engineering foundation treatment. S2, layered progressive high-energy-level dynamic compaction treatment is carried out; s3, low-disturbance dry-type pneumatic hole forming is adopted; and S4, the PRC pipe pile is hammered and implanted, and a composite foundation is formed. According to the method, the gradient stiffness dynamic compaction layer and the low-disturbance PRC pipe pile are subjected to cooperative treatment, and integrated efficient improvement of a soil shallow layer and a deep base is achieved; a dry-type pneumatic pore-forming technology is adopted, the soil disturbance rate is controlled within 5%, and the disturbance problem of a traditional pore-forming technology on a pretreated soil body is effectively solved; the mechanical property of the hammering implanting technology is matched with that of the PRC pipe pile, it is precisely guaranteed that the pile end enters a bearing stratum through penetration control, meanwhile, the pile-soil interaction is enhanced, collaborative optimization of high crack resistance, high ductility and high durability is achieved through the mixed reinforcement design of the PRC pipe pile, and the PRC pipe pile is suitable for the special environment of coastal dredger fill.
Owner:ZHEJIANG PETROLEUM&CHEM CO LTD
Coarse-grained soil foundation dynamic compaction reinforcement effect fine evaluation method
PendingCN121898945APreparing sample for investigationIn situ soil foundationSoil scienceDynamic compaction
The invention discloses a fine evaluation method for the dynamic compaction reinforcement effect of a coarse-grained soil foundation, and the method comprises the steps: leveling a test point, measuring the shallow in-situ density of the test point before dynamic compaction, measuring the on-site lateral pressure modulus of different depths of the test point before dynamic compaction, carrying out dynamic compaction treatment, and measuring the shallow in-situ density of the test point after dynamic compaction. The method comprises the following steps: measuring field lateral pressure moduli of different depths of a test point after dynamic compaction, measuring a relation curve between the density of different depths of the test point and the lateral pressure moduli, and interpolating the field lateral pressure moduli to the relation curve between the density and the lateral pressure moduli to obtain deep in-situ densities of different depths of the coarse-grained soil foundation before and after dynamic compaction. Calculating the in-situ density increase rate of different depths, taking the minimum depth which is greater than or equal to 0.01 as the effective depth of dynamic compaction reinforcement, calculating to obtain the average density of the coarse-grained soil foundation after dynamic compaction, testing to obtain the strength and deformation parameters of the coarse-grained soil foundation after dynamic compaction, and evaluating the dynamic compaction reinforcement effect. The method is simple and convenient to apply, comprehensive in evaluation index and quantifiable in evaluation effect.
Owner:CHANGJIANG RIVER SCI RES INST CHANGJIANG WATER RESOURCES COMMISSION
Rapid dynamic compaction treatment method for large-area replacement and filling foundation covering existing pit-pond area
The invention relates to a rapid dynamic compaction treatment method for a large-area replacement filling foundation covering an existing pit-pond area. The rapid dynamic compaction treatment method comprises the specific steps that accumulated water in a pit-pond is removed, sludge is excavated out, and a pit-pond slope is trimmed; soil body backfilling and first-time dynamic compaction are conducted outside the upper opening line of the pit-pond slope; the slope toe within the sludge excavation depth range is trimmed into a vertical boundary, soil is backfilled to the excavated portion of the pit bottom, and paving, leveling and preliminary compaction are conducted; the pit-pond side slope is expanded outwards towards the outside of the pit in a grading mode to form a multi-stage side slope; the slope surface of the second-stage side slope is trimmed to be in a vertical state, and then a second layer of soil body is backfilled and primarily compacted; the next stage of slope surface is trimmed in sequence until the original upper opening line elevation of the existing pit pond is reached through soil filling, point tamping is carried out, then full tamping is carried out, and second-time dynamic tamping is completed; and the filling slope is corrected to be in a vertical state, backfilling and leveling are carried out, point tamping and full tamping are carried out, and third-time dynamic tamping is completed. The problem that the uniformity and the stability of the connection portion of the newly-filled soil and the undisturbed soil are poor is solved, and the overall tamping frequency can be optimized.
Owner:CHINA CONSTRUCTION SIXTH ENGINEERING DIVISION CO LTD
Plateau collapsible loess intelligent dynamic compaction ramming construction method
ActiveCN117071528BParticular environment based servicesHollow article cleaningDynamic compactionFlat panel display
The application relates to the technical field of building construction equipment, in particular to a plateau collapsible loess intelligent dynamic compaction ramming construction method, which comprises a rotating support platform, a distance measuring module is fixedly connected to the top of the rotating support platform, a main control module is fixedly connected to the top of the rotating support platform, a communication module is fixedly connected to the top of the rotating support platform, a flat display is arranged on the side wall of the communication module, and a first Beidou antenna is fixedly connected to the top of the distance measuring module. When the support frame is subjected to pressure, the connecting clamping plate pushes the connecting disc to descend, the connecting disc drives the extrusion rod to slide in the support column, the support column pushes the inserting column to insert into the soil, the support frame is conveniently stabilized, when the inserting column descends, the round sliding block is pulled to slide on the extrusion rod, the connecting plate pulls the support plate to move, the support plate contacts the surface of the soft soil, and then is clamped into the soil to form an embedded clamping connection, the friction with the ground is enhanced, and the device is conveniently supported.
Owner:CHINA RAILWAY NO 3 GRP CO LTD +2
A method for dynamic correlation analysis of roadbed compaction trajectory and compaction quality
This invention relates to the field of big data analysis and processing technology, and discloses a method for dynamic correlation analysis of roadbed compaction trajectory and compaction quality. The method includes: Step 1: collecting the position information, attitude information, and vibration response information of the road roller during the roadbed compaction process to obtain a set of hidden state samples and a set of observation sequence samples of corresponding partial trajectory analysis units; Step 2: executing a joint dynamic correlation analysis algorithm based on Hidden Markov Model (HMM) and manifold learning; Step 3: using the joint dynamic correlation analysis model to process the observation sequence of real-time trajectory analysis units constructed from the real-time collected data, and combining it with the compaction manifold embedded coordinates to generate a dynamic compaction quality grade distribution map covering the roadbed construction area. This invention not only improves the continuity and stability of compaction quality assessment, but also enhances the responsiveness to changes in construction conditions.
Owner:THE SECOND CONSTR OF CHINA CONSTR EIGHTH ENG DIV +1
A dynamic compaction device for collapsible soil foundation treatment
The utility model relates to land base treatment technical field, and disclose a kind of dynamic compaction device for collapsible soil base treatment, including tracked vehicle, further include: for driving rammer lifting assembly in vertical direction lift, set in the top of tracked vehicle slewing platform, lifting assembly inside is provided with lifting steel wire rope;The utility model adopts soil-breaking assembly to break the soil cake formed by first ramming before, soil-breaking assembly is synchronous with rammer lift, using ramming inertia can be in instantaneously punctured soil cake, without secondary access or additional power, reduce the number of supplementary ramming. Soil-breaking assembly is made of hard alloy material, and the contact area with soil cake is small, and the soil cake shell can be punctured. Soil-breaking assembly is designed in a modular way, and except for the length, the rest of the dimensions are the same. The length of the soil-breaking assembly can be selected according to the water content of the foundation. The stud and the lock nut are combined and installed. The on-site staff can complete disassembly and assembly. The worn piercing head can be replaced on-site. The maintenance cost is low.
Owner:FUJIAN OIL REFINING CHEM CO LTD
Dynamic compaction device for filling and leveling airport runway
The utility model discloses an airport runway filling and leveling dynamic compaction device which comprises a working shell, and one side of the working shell is fixedly connected with a guide groove block; one side of the rammer assembly is connected with the interior of the working shell in a sliding mode, and the rammer assembly is used for conducting gravity hammering on the airport runway through related rammer parts; and one side of the protection assembly is fixedly connected with the surface of the working shell, and the protection assembly is used for effective protection in the working and transition processes. According to the airport runway filling and leveling dynamic compaction device, by means of the arrangement of the rammer assembly, the circular groove formed in the bottom of the gravity block and the cooperation of the inserting groove, the inserting column and the vertical groove plate, the inserting column and the heavy hammer plate can be directly and integrally inserted into the circular groove, then related mechanisms are fixed in a rotating mode, and after the vertical groove plate enters the circular groove, the vertical groove plate is only staggered with the inserting groove; and related mechanisms cannot be separated.
Owner:ZHEJIANG MINGDE CONSTR
Dustproof equipment for dynamic compaction drop hammer
The utility model relates to the technical field of engineering machinery, in particular to a dynamic compaction drop hammer dustproof device which comprises a base and a dustproof assembly, the dustproof assembly comprises a supporting component, a heavy hammer, a mounting plate, a supporting cover, a dust collector, a collecting frame and a telescopic component, the mounting plate is fixed to the side face of the heavy hammer, and the dust collector is arranged in the supporting cover. During working, the heavy hammer is put down by the supporting component for tamping, when the heavy hammer makes contact with the ground, the telescopic component stretches out and draws back to avoid damage caused by impact, and meanwhile sputtered dust can be covered by the telescopic component to be matched with the dust collector on the supporting cover for adsorption and silence treatment. The problems that when a dynamic compaction drop hammer in an existing dynamic compaction machine falls down to conduct compaction, huge impact force can be generated when the dynamic compaction drop hammer makes contact with the ground, dust on the ground is splashed and floats in the air due to the impact force, and the dust floating in the air is inhaled into the lungs by workers, and injuries are likely to be caused are solved.
Owner:CCCC THIRD HARBOR ENGINEERING CO LTD
Dynamic compaction construction quality intelligent monitoring method and system based on multi-source data fusion
PendingCN121855610AHeight/levelling measurementSatellite radio beaconingDynamic compactionMulti source data
The invention provides a dynamic compaction construction quality intelligent monitoring method and system based on multi-source data fusion. According to the method, multi-source data such as Beidou positioning and orientation, winch Hall sensing and rammer tension sensing are integrated, firstly, a dynamic base line formed by double Beidou antennas is used for resolving the pitch angle and settlement of a machine body in real time, dynamic deformation compensation is conducted on a ramming settlement measured value, and the real ground ramming settlement is obtained; cross validation and self-diagnosis are carried out on drop distance measurement through multi-sensor data, and fault indication and data compensation are carried out in case of abnormality; and finally, on the basis of the compensated real compaction settlement and compaction energy, the change of the unit energy consumption ratio is calculated and monitored in real time, so that construction abnormity is diagnosed, and early warning is triggered. The corresponding system comprises a Beidou subsystem, a winch monitoring subsystem, a rammer state monitoring subsystem, a data processing and control subsystem and the like. According to the invention, the monitoring precision, reliability and intelligent level of the dynamic compaction construction process are effectively improved, and the conversion from experience construction to data-driven intelligent control is realized.
Owner:CHINA CONSTR EIGHT ENG DIV CORP LTD