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332 results about "Foundation engineering" patented technology

Foundation Engineering is the engineering field of study devoted to the design of those structures which support other structures, most typically buildings, bridges or transportation infrastructure. It is at the periphery of Civil, Structural and Geotechnical Engineering disciplines and has distinct focus on soil-structure interaction.

Method and system for estimating vertical bearing capacity of steel pipe pile

The invention provides a method and system for estimating the vertical bearing capacity of a steel pipe pile, and relates to the technical field of pile foundation engineering.The method comprises the steps that a static cone penetration test is conducted on a seabed stratum needing to be arranged for a steel pipe pile foundation, experimental data are obtained and subjected to normalization processing, soil behavior types are divided, and soil layer mechanical parameters are inverted; calculating side friction resistance and end resistance of the steel pipe pile based on the soil layer mechanical parameters to obtain initial static ultimate bearing capacity; historical equivalent cyclic load experimental data of waves in the construction sea area are obtained, an equivalent cyclic load reduction coefficient, a liquefaction reduction coefficient and a time-varying corrosion reduction coefficient are constructed, and a comprehensive time-varying reduction coefficient is constructed; the initial static ultimate bearing capacity is corrected based on the comprehensive time-varying reduction coefficient, the vertical bearing capacity of the steel pipe pile in the long-term service period is predicted, and the time-varying ultimate bearing capacity is obtained; setting an evaluation threshold according to the time-varying ultimate bearing capacity, dynamically adjusting a bearing capacity grading threshold interval, and outputting a bearing capacity grading evaluation result.
Owner:CCCC THIRD HARBOR ENGINEERING CO LTD

Offshore wind turbine pile group structure suitable for complex geology and installation method of offshore wind turbine pile group structure

The invention relates to the technical field of offshore wind power foundation engineering, in particular to an offshore wind turbine pile group structure suitable for complex geology and a mounting method of the offshore wind turbine pile group structure. The offshore wind turbine pile group structure suitable for the complex geology comprises guide assemblies and a pile group system frame, wherein each guide assembly is composed of a steel pipe pile guide sleeve, a jacket guide sleeve and a connecting ring plate, and the pile group system frame integrates the multiple guide assemblies through a connecting frame. The modular overall pile group structure design is achieved through the pile group system frame integrating the multiple guide assemblies and the connecting frame, the fan load is dispersed to the multiple pile foundations through the pile group synergistic effect, and therefore the bearing capacity of the whole foundation is improved, the foundation can adapt to different seabed geological conditions, and the construction efficiency is improved. The development requirement of offshore wind power in a complex environment is met, efficient installation, high bearing capacity and geological adaptability optimization of the offshore wind turbine foundation are achieved, stable support is provided for an offshore wind turbine generator, the construction cost is reduced, and the construction efficiency is improved.
Owner:LONGYUAN (BEIJING) WIND POWER ENG & CONSULTING CO LTD

Complex geology pile releasing construction method and system based on BIM (Building Information Modeling) technology

The invention relates to the technical field of complex geology pile releasing construction methods based on the BIM technology, and discloses a construction method named as a complex geology pile releasing construction method based on the BIM technology. The method aims at solving the problems of design and construction disjunction, insufficient risk pre-control, low resource utilization rate and the like caused by geological information dimension reduction processing and construction process static management in the prior art. The method is characterized by comprising the following steps: constructing a multi-source heterogeneous geological information full-parameterization three-dimensional attribute body model, and carrying out integrated simulation optimization design on a single-group pile cap based on the model; and sensing construction parameters in real time to dynamically correct the geologic model, so as to generate a self-adaptive construction control instruction and high-precision lofting data. By the adoption of the technical scheme, the safety, economical efficiency and environment friendliness of pile foundation engineering can be remarkably improved.
Owner:HANGZHOU HUANGWEI MUNICIPAL ENG CO LTD

Rock-soil body interface torsional shear characteristic and toughness parameter unit body test method and device

The invention particularly discloses a rock-soil body interface torsional shear characteristic and toughness parameter unit body test device which comprises a unit body sample blank manufacturing device, a centering device, a special drilling tool, a rib body and a torque load.The rock-soil body interface torsional shear characteristic and toughness parameter unit body test device has the beneficial effects that traditional direct shear / drawing shear is replaced with torsional shear loading; the problem that the interface contact area is reduced in the shearing process is thoroughly solved, it is ensured that the interface contact area of an anchor / pile and a rock-soil body is constant, a pressure water bag is arranged at the top of a test box unit body, the original overlying and confining pressure environment of a stratum is accurately simulated, a test anchor hole / pile hole is directly manufactured through a drilling technology, and the natural roughness characteristic of the hole wall is reserved to the maximum extent; the smooth wall surface limitation of traditional mold pore forming is broken through, the basic toughness concept of the anchor / pile-rock-soil body interface is defined for the first time, the nature of the basic toughness can be quantitatively represented by the robustness of the shear resistance of the interface, a matched toughness testing technology and evaluation method are developed, and a theoretical model and a calculation tool are provided for the toughness design of anchoring engineering and pile foundation engineering.
Owner:HUNAN UNIV

Visual grouting quality online evaluation and self-correction system and method

The invention relates to the technical field of foundation engineering, in particular to a visual grouting quality online evaluation and self-correction system and method.The visual grouting quality online evaluation and self-correction system comprises a data acquisition module integrating various sensors; the data processing module is used for generating standardized grouting process data from the sensor data; the state analysis module evaluates the standardized data in real time by using a preset atlas analysis algorithm and an expert rule base, and identifies the grouting state and the quality condition; the geological information module generates a geological response map for auxiliary evaluation and control decision making; and the control execution module adjusts the operation parameters of the grouting equipment according to the evaluation result output by the state analysis module, and the operation parameters comprise valve opening and closing, the slurry flow speed and the grouting sequence, so that self-adaptive deviation correction control in the grouting process is achieved. According to the method, under-grouting, over-grouting and abnormal grout escape can be effectively avoided, grouting uniformity and construction quality are improved, manual intervention and misjudgment risks are reduced, and safety, efficiency and engineering reliability of grouting operation are remarkably improved.
Owner:南京中交浦滨建设有限公司 +3

Support structure and support method for mixed tower fan foundation template

The invention relates to the technical field of foundation engineering, in particular to a mixed tower fan foundation formwork erecting structure and method.The erecting structure comprises a tensioning chamber standing formwork, a tensioning anchoring end bottom formwork, an upper inner formwork, an outer formwork, a tensioning chamber formwork supporting system, a foundation upper inner formwork supporting system and an outer formwork supporting system; the tensioning chamber formwork supporting system comprises vertical rod supports located on the periphery and the center respectively, radial supporting vertical rods are installed on the tops of the vertical rod supports located on the periphery, cross rod supports are installed on the tops of the radial supporting vertical rods, and ring beam radial supporting cross rods used for supporting a tensioning anchoring end bottom die are installed on the tops of the cross rod supports. A center column is installed at the top of the vertical rod support located in the center, a radial horizontal supporting rod is transversely supported on the center column, and a vertical mold support used for supporting a stretching chamber vertical mold is installed at the end of the radial horizontal supporting rod. The foundation upper inner mold supporting system comprises an inner annular steel beam. The supporting structure assists in one-time forming of concrete pouring, and the overall construction quality is guaranteed.
Owner:CHINA MCC22 GROUP CORP LTD

A cured soft soil bearing layer FRP-steel honeycomb web photovoltaic pile foundation and a construction method thereof

This invention relates to the field of soft soil pile foundation engineering technology, specifically to a photovoltaic pile foundation with FRP-steel honeycomb web and a construction method for solidifying a soft soil bearing layer. The pile foundation includes an FRP-steel honeycomb web photovoltaic pile foundation and a solidified soft soil bearing layer. The bottom of the FRP-steel honeycomb web photovoltaic pile foundation is located in the solidified soft soil bearing layer, and its top is located above the ground. The FRP-steel honeycomb web photovoltaic pile foundation includes a core mold, concrete, and a fiber-wound layer. The core mold includes a cross-shaped steel column and an FRP sleeve. Through holes are provided on the web of the cross-shaped steel column and on the two straight plates of the FRP sleeve. The FRP sleeve is fixed between two adjacent webs of the cross-shaped steel column. The number and position of the through holes on each straight plate of the FRP sleeve correspond to the number of through holes on the web of the corresponding cross-shaped steel column. Concrete is poured inside the FRP sleeve, and the fiber-wound layer is located on the outside of the core mold. This invention reduces the weight and cost of the photovoltaic pile foundation and improves its durability and stability in soft soil areas.
Owner:SHANDONG UNIV

Bionic cross plate tubular pile with snake-scale-imitated outer wall, tree root-imitated inner wall and tooth root-imitated bottom end and manufacturing method of bionic cross plate tubular pile

The invention discloses a bionic cross plate tubular pile with the outer wall imitating snake scales, the inner wall imitating tree roots and the bottom end imitating tooth roots and a manufacturing method of the bionic cross plate tubular pile. The bionic cross plate tubular pile comprises a cylindrical tubular pile body, cross plates and tooth root imitating structures. The outer wall of the cylindrical pipe pile is provided with a plurality of snake-scale-imitated protruding structures, and the inner wall of the cylindrical pipe pile is provided with a plurality of tree-root-imitated protruding structures. The cross plate is arranged in the cylindrical pipe pile and divides a circular cavity in the cylindrical pipe pile into four first fan-shaped cavities; the tooth root imitating structure is arranged at the bottom end of the cylindrical pipe pile. According to the invention, the inertia moment of the pile body, the pile end resistance, the pile side friction resistance and the pulling resistance are synergistically enhanced through multiple bionic designs, so that the comprehensive bearing capacity of the tubular pile under the combined action of vertical and horizontal loads is remarkably improved, and a novel solution is provided for pile foundation engineering under complex load and geological conditions.
Owner:TIANJIN UNIV

Method and system for identifying defective section of cast-in-situ bored pile

The invention relates to the field of geotechnical engineering and infrastructure engineering informatization, in particular to a cast-in-situ bored pile defect section identification method and system. The method comprises the following steps: acquiring historical construction data, and preprocessing the historical construction data to obtain historical construction multi-source data; dividing the historical construction multi-source data, and carrying out feature extraction on a division result to obtain a plurality of segment-level feature data; performing low-strain detection on a formed pile to obtain defect data, and matching the segment-level feature data with the defect data to obtain a training sample; and constructing a defect prediction model based on the training sample, and identifying the defect section of the cast-in-situ bored pile by using the defect prediction model. The problems that in the prior art, detection lags behind, the sampling inspection coverage rate is limited, and construction quality risks are difficult to intervene in time are solved, and the timeliness and accuracy of pile foundation project quality management and control are improved by associating construction process data with pile inspection waveform information.
Owner:SHIJIAZHUANG TIEDAO UNIV

Estimation method and system for vertical bearing capacity of steel pipe pile

The present application provides a steel pipe pile vertical bearing capacity estimation method and system, relates to the field of pile foundation engineering technology field, the present application carries out static sounding test to the seabed stratum required to be set for the steel pipe pile foundation, obtains experimental data and carries out normalization processing, divides the soil behavior type, and inverts the soil layer mechanical parameter; based on the soil layer mechanical parameter, the side friction and the end resistance of the steel pipe pile are calculated, and the initial static ultimate bearing capacity is obtained; the historical equivalent cyclic load experimental data of the construction sea area wave are obtained, the equivalent cyclic load reduction coefficient, the liquefaction reduction coefficient and the time-varying corrosion reduction coefficient are constructed, and the comprehensive time-varying reduction coefficient is constructed; based on the comprehensive time-varying reduction coefficient, the initial static ultimate bearing capacity is corrected, the vertical bearing capacity of the steel pipe pile in the long-term service period is predicted, and the time-varying ultimate bearing capacity is obtained; according to the time-varying ultimate bearing capacity, the evaluation threshold is set, the bearing capacity classification threshold interval is dynamically adjusted, and the bearing capacity classification evaluation result is output.
Owner:CCCC THIRD HARBOR ENGINEERING CO LTD

Design method of steel tower drum fan foundation based on machine learning

The invention relates to the technical field of fan foundation design, and particularly provides a steel tower drum fan foundation design method based on machine learning, which comprises the following steps: selecting an input variable and an output parameter, and establishing a data set containing the input variable and the output parameter; screening of the machine learning model: delimiting a training set, and performing hyper-parameter optimization of the machine learning model; based on the prediction effect of each group of models in the test set, obtaining the predicted average statistic estimated value and variance of each group of models on the input variable, and establishing a comparison matrix of each group of models; screening out a GBDT algorithm model as an optimal machine learning model based on the weight coefficient and the normalization coefficient obtained by the comparison matrix; and the optimized GBDT algorithm model is improved, and the complete engineering quantity of the high-precision fan foundation is obtained. According to the method, rapid and accurate prediction of the wind turbine foundation engineering quantity is realized, and the method can be applied to rapid estimation of a bidding stage and engineering quantity checking of a design stage, so that a design scheme is optimized, and engineering time and cost are saved.
Owner:CEEC HUNAN ELECTRIC POWER DESIGN INST

Support-free construction method for continuous rigid frame of V-shaped pier

The invention discloses a V-shaped pier continuous rigid frame non-support construction method, belongs to the technical field of bridge construction, and solves the problem of large occupied space of existing V-shaped pier construction. No floor supporting frame is arranged under the bridge, roads and channels under the bridge are not occupied, and vehicle passing or ship navigation under the bridge is not affected by bridge construction; according to the method, a constructed structure serves as a beam body pouring supporting platform, no support is arranged under a bridge, and therefore the temporary pile foundation engineering amount and the support engineering amount are reduced, the manufacturing cost is greatly saved, and economic benefits are remarkable; compared with an existing hanging basket construction method, the hanging basket construction method does not need a supporting frame, the beam body is poured through a hanging basket cantilever, only the bailey beam is needed, and a hanging basket is not needed. Compared with a bailey beam, the hanging basket is customized, the bailey beam only needs to be leased and assembled, the cost is low, meanwhile, the construction of the hanging basket has certain technical difficulty, and the construction of the bailey beam is relatively low in technical difficulty, small in risk and high in safety.
Owner:CHINA RAILWAY CONSTR GROUP CO LTD +1

Method and arrangement for carrying out construction measures

The invention relates to a method and an arrangement for carrying out construction measures, in particular foundation engineering measures, on a construction site with a number n of construction machines, in particular foundation engineering machines, on which attachment components, in particular construction tools, are fixed in a releasable and changing manner, wherein a number N of attachment components are kept on the construction site, wherein N>n>2. Provision is made in that in a computer unit the number n and the type of construction machines and the number N and the type of attachment components present on a construction site are saved, in that the computer unit has a data connection to the individual construction machines and queries information on the actuators of the individual construction machines, in that depending on the information received the computer unit ascertains which attachment component is fixed on the individual construction machine, and in that the computer unit ascertains and indicates which attachment components are freely available on the construction site.
Owner:BAUER SPEZIALTIEFBAU GMBH

A method for detecting the ultimate bearing capacity of a pile foundation

The present application relates to the pile foundation engineering detection technical field, disclose a kind of pile foundation ultimate bearing capacity detection, this method is by arranging multiple sensor array at pile top, vibration, displacement, soil pressure multi-source signal is synchronously collected, 2Dstack data fusion strategy is used to carry out pretreatment, in combination with the optimized and corrected Heili piling formula and 2Dstack-CNN deep learning model, realize the accurate calculation of pile foundation ultimate bearing capacity.The present application has high detection precision, small bearing capacity detection error, defect positioning error ≤±0.15m;High detection efficiency, single pile detection time 2-3 hours, more than 80% than static load test;Nondestructive and strong adaptability, suitable for in-service pile foundation, complex geology and large-diameter pile foundation;High degree of intelligence, without manual waveform interpretation;Detection cost is reduced by more than 50% compared with traditional method, with very high engineering application value.
Owner:ANHUI SANJIAN ENG

Solid waste cementitious board sound barrier and preparation method

PendingCN122301519ASlagCement board
This invention discloses a solid waste cemented board sound barrier and its preparation method. The solid waste cemented board sound barrier material is prepared from industrial solid wastes such as phosphogypsum, steel slag powder, and fly ash as the main raw materials, realizing the resource utilization of solid waste, significantly reducing raw material costs, and being environmentally friendly and low-carbon. The board production process has low energy consumption, simple and controllable technology, and is easy to mechanize for continuous production. The resulting material has high strength and stable performance, and is lightweight, fireproof, and corrosion-resistant. It does not crack or discolor under extreme climates, and its key indicators meet the requirements of highway sound barrier specifications. Based on its excellent strength, the solid waste cemented board sound barrier board prepared by this invention can be made into 4-5 meter long boards, suitable for installation with H-shaped steel columns spaced 4-5 meters apart. Compared with the traditional 2-meter boards, it can reduce the amount of column and foundation engineering, significantly reduce the overall cost, and has significant economic benefits and broad application prospects.
Owner:HUBEI COMM PLANNING & DESIGN INST CO LTD

Connecting structure of prefabricated pipe pile and prefabricated bearing platform

The invention discloses a connecting structure of a prefabricated pipe pile and a prefabricated bearing platform, and relates to the technical field of pile foundation engineering. Comprising prefabricated pipe piles; the prefabricated bearing platform is arranged on the top of the prefabricated pipe pile in a sleeving mode, and the prefabricated pipe pile and the prefabricated bearing platform are filled with ultra-high-performance concrete. The lower hoop is arranged outside the prefabricated pipe pile in a sleeving manner, and the lower hoop is connected with the bottom surface of the prefabricated bearing platform; the upper anchor piece is arranged in the prefabricated pipe pile and close to the lower hoop end; the upper anchor piece comprises an anchoring piece arranged in the prefabricated pipe pile and close to the lower hoop end, an upper cover plate is connected to the anchoring piece through a plurality of high-strength bolts, and a pouring hole is coaxially formed in the upper cover plate. The invention has the advantages of definite stress, easiness in installation, high strength and the like.
Owner:CRRC P & D INSTITUTE CO LTD

Hole wall stability dynamic control system in tidal formation drilling process

The invention relates to the technical field of foundation and foundation engineering construction, and discloses a hole wall stability dynamic control system in the tidal formation drilling process, and the system comprises a multi-source dynamic sensing module which is used for obtaining the multi-dimensional data of the drilling pressure, the tidal water level, the displacement of the soil layer around the hole and the like in real time; the data processing and intelligent decision-making module is used for receiving the sensing data and carrying out analysis and prediction through a built-in dynamic mapping and self-calibration model so as to generate a prospective hole wall stability control instruction; and the cooperative control and planning execution module is used for receiving the control instruction and analyzing the control instruction into a cooperative adjustment action on wall protection and drilling parameters, so that accurate and closed-loop dynamic control is executed on the stability of the hole wall. According to the method, through multi-source sensing, self-calibration model prediction and collaborative planning control, prospective and self-adaptive fine adjustment of the hole wall stability is achieved, and the drilling safety is improved.
Owner:LIANYUNGANG HARBOR ENG CO

Pile-anchor composite foundation for improving single-pile bearing capacity and construction method

The invention relates to the technical field of pile foundation engineering, in particular to a pile-anchor composite foundation for improving the bearing capacity of a single pile and a construction method, the pile-anchor composite foundation comprises the single pile and an anchoring body, the anchoring body is arranged on the single pile in a sleeving mode, the anchoring body comprises a pile embracing disc and an anchor fluke, and the anchor fluke is installed on the pile embracing disc in the circumferential direction and extends downwards. The device can be installed in a rear-mounted mode after primary sinking of a single pile, the pile sinking procedure does not need to be additionally added, and the device is suitable for the complex construction environment of ocean engineering. The anchor flukes are uniformly distributed along the circumferential direction, can bear wave and tidal current loads in multiple directions, and are adaptive to a complex marine environment; the buckling resistance of an anchoring body is enhanced through a triangle-like area formed by the supporting arches, and effective transmission of force is ensured through rigid connection of the sleeve and the single pile.
Owner:SHEYANG LONGYUAN WIND POWER CO LTD

Inner and outer core variable cross-section composite pile and construction method thereof

The invention discloses an inner and outer core variable cross-section composite pile and a construction method thereof.The inner and outer core variable cross-section composite pile comprises an outer core and an inner core, the inner core is a precast concrete pile and comprises a variable cross-section section located on the upper portion and at least one uniform cross-section section located on the lower portion, and the cross-section area of the variable cross-section section is decreased from top to bottom; the variable-section sections and the uniform-section sections are connected through connecting assemblies, every two adjacent uniform-section sections are connected through connecting assemblies, the outer core is a cement-soil mixing pile which is formed in situ on site, part of the section sections of the cement-soil mixing pile are in an expanding mode, and the central axis of the inner core coincides with the central axis of the outer core. The bearing performance, the economical and environment-friendly performance and the construction quality and efficiency of the pile foundation are comprehensively improved.
Owner:CHINA RAILWAY SIYUAN GRP GUANGZHOU DESIGNING INST CO LTD +1

Construction method for fabricated anchoring node of sunken post-tensioning anti-floating anchor

The invention relates to the technical field of foundation engineering, in particular to a sunken post-tensioning anti-floating anchor rod fabricated anchoring joint construction method which comprises the following steps: carrying out an anchor rod uplift bearing capacity test; constructing a cushion layer and manufacturing an anchor rod, wherein the anchor rod comprises a steel strand; an anchor rod construction point is positioned on the cushion layer; drilling and cleaning an anchor hole; lowering the anchor rod; performing primary normal-pressure grouting and secondary high-pressure grouting; maintaining the anchor rod; constructing a waterproof layer; binding reinforcing steel bars and installing a sealing anchor base; pouring structural bottom plate concrete; tensioning and locking the anchor rod; according to the construction method, it can be guaranteed that the site of the structural bottom plate is flat, operation of constructors and transportation of mechanical equipment are facilitated, the effect of protecting anchoring joints of the anchor rods is achieved, and the damage risk of the anchoring joints is reduced; compared with a traditional convex type or concave type anchoring node, the bottom plate can be reduced by a certain thickness, waterproof construction operation is simpler and more convenient, the labor material cost can be greatly reduced, the construction difficulty can be lowered, the self weight of the bottom plate is reduced, and the effect of shortening the construction period is achieved.
Owner:五矿二十三冶建设集团有限公司

Safety monitoring system for settlement and inclination of house

The invention relates to the technical field of house safety monitoring, in particular to a house settlement and inclination safety monitoring system which comprises a sensing module, a transmission module, a data processing module and an application module, and the sensing module is composed of a static leveling instrument set and a double-shaft inclinometer set and used for monitoring the settlement and inclination conditions of a house respectively. The static leveling instrument is connected through a pipeline and is provided with a liquid storage barrel to ensure air pressure balance; the double-axis inclinometer measures inclination angles in the X-axis direction and the Y-axis direction, a monitoring cloud platform in the application module provides real-time data display, a three-level early warning mechanism and a comprehensive engineering management function and supports access of a mobile phone end and a PC end, and the system can calculate settlement single-time variation, accumulated variation and inclination angle variation. The building safety monitoring system is convenient to install and maintain, meets safety monitoring requirements of various buildings, and is particularly suitable for foundation projects needing long-term monitoring.
Owner:SHENZHEN RUIHE CONSTR DECORATION

Steel casing and cast-in-place pile drag reduction composite structure

The invention discloses a steel casing and a cast-in-place pile anti-drag composite structure, and relates to the technical field of pile foundation engineering, the steel casing comprises a first semi-annular section and a second semi-annular section, the first semi-annular section comprises a plurality of first semi-annular units, first arc-shaped reinforcing ribs of the first semi-annular units are fixed in first semi-annular plates, and second arc-shaped reinforcing ribs of the second semi-annular units are fixed in second semi-annular plates; the length of the first arc-shaped reinforcing ribs is smaller than that of the first semi-annular plates, the second semi-annular unit structures of the second semi-annular sections are similar to the first semi-annular unit structures, the adjacent first semi-annular plates are connected through connecting pieces, and each first semi-annular plate is provided with a first main body part and a first bent part. The second semi-annular plate is provided with a second main body part and a second bending part, and the first main body part, the second bending part, the first bending part and the second main body part can be sequentially attached and fixed through the fixing piece. The cast-in-place pile anti-drag composite structure comprises a reinforcement cage, an anti-drag layer and the steel casing. The structure strength is high, and construction is more convenient and safer.
Owner:CHINA NUCLEAR POWER ENGINEERING CO LTD +1

Follow-up recoverable full pile casing and construction method

The invention relates to the field of pile foundation engineering construction, in particular to a follow-up type recoverable full pile casing and a construction method. The follow-up type recoverable full pile casing comprises a section of connecting pile casing, a section of drilling pile casing and a plurality of sections of standard section pile casings. Then the connecting pile casing and the standard section pile casing can be effectively in butt joint through a quick-release wrench, the connecting pile casing and the standard section pile casing are connected into a whole through butt joint of a connecting piece and the quick-release wrench, and the drilling pile casing and the standard section pile casing are connected into a whole through butt joint of the connecting piece and the standard section pile casing; according to the follow-up type pile casing, the follow-up type function and turnover use are achieved, the manufacturing cost of the follow-up type pile casing is slightly higher than that of a traditional pile casing, but due to the fact that the follow-up type pile casing can be repeatedly used, the use cost is low, and great economic benefits and safety are shown; and meanwhile, the construction quality is ensured, the working efficiency is improved, and the construction cost is saved.
Owner:CCCC FOURTH HIGHWAY ENG CO LTD +1

Efficient grouting pipe for foundation engineering

The utility model relates to the technical field of grouting pipes, and provides an efficient grouting pipe for foundation engineering, which comprises a base, the left side and the right side of the top of the base are fixedly connected with two supporting plates, the tops of the two supporting plates are fixedly connected with a slurry box, and the left side of the top of the slurry box is provided with a feed port. A fixing block is fixedly connected to the front side of the exterior of the slurry box, a motor is fixedly connected to the top of the fixing block, the output end of the motor penetrates through the front side of the slurry box and is rotationally connected with the stirrer, and a pressure barrel is fixedly connected between every two adjacent supporting plates; the right end of the top of the pressure barrel communicates with a first one-way valve and communicates with the bottom of the slurry box. According to the grouting device, high efficiency and comprehensiveness of foundation grouting are achieved, slurry stirring, pressurizing and conveying are rapidly completed, the grouting efficiency is improved, and the construction period is shortened.
Owner:FOSHAN SHANGANG TRADING CO LTD

Prototype pipe pile shaking table test system simulating the action of foundation and superstructure

This invention provides a prototype pipe pile shaking table test system for simulating the effects of foundation and superstructure, belonging to the fields of structural engineering, earthquake engineering, and foundation engineering. It includes a shaking table, a prototype pipe pile specimen horizontally arranged on the shaking table surface, a foundation action simulation component, a pile top axial compression simulation component, a pile cap simulation component, and a superstructure dynamic simulation component. The foundation action simulation component is fixed to the shaking table surface and covers the outside of the prototype pipe pile specimen. The pile top axial compression simulation component penetrates the inside of the prototype pipe pile specimen and extends to the outside of the pile bottom. The pile cap simulation component is connected to the top of the prototype pipe pile specimen, and the superstructure dynamic simulation component is positioned above the pile cap simulation component. This invention, using the above-mentioned test system, solves the problems of existing prototype pipe pile shaking table tests, such as large space requirements, high cost of foundation simulation, difficulty in loading real superstructures, inconvenient adjustment of working conditions, difficulty in comprehensively simulating pile-soil-structure interactions, and inability to accurately measure dynamic changes in pile axial force.
Owner:GUANGZHOU UNIVERSITY

Method for preparing high-performance concrete under assistance of microwaves and application

The invention provides a microwave-assisted method for preparing high-performance concrete and application, and belongs to the technical field of concrete curing and foundation engineering construction. The high-performance concrete is prepared from, by weight, 10-40 parts of cement, 2-20 parts of basalt powder, 1-20 parts of silica fume, 1-5 parts of gypsum, 10-40 parts of quartz sand, 10-40 parts of calcined clay, 5-15 parts of limestone powder, 1-5 parts of fibers and 10-30 parts of water, the usage amount of the basalt powder, the usage amount of the silica fume, the usage amount of the gypsum and the usage amount of the fibers are not zero, and the high-performance concrete is prepared after the raw materials are mixed and formed. The obtained molded test piece is subjected to mold curing and microwave-assisted curing in sequence, and the high-performance concrete is obtained. According to the invention, the synergistic effect of various mineral components such as calcined clay, limestone powder and the like is adopted, and the synergistic improvement of the mechanical property and electromagnetic absorption property of the concrete is realized by optimizing the proportioning amount of the mixed raw material powder and combining a microwave-assisted curing technology.
Owner:NINGBO UNIV +1

Support piles

1. Name of the product in this design: Support pile. 2. Application of this design: for precast pile engineering, especially riverbank protection engineering and foundation engineering. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the key design points: Design 1 3D view. 5. Design 1 is designated as the basic design. 6. Other matters requiring explanation: The product of this design is of variable length.
Owner:JIANGSU JIAZHENGHONG NEW MATERIALS TECH CO LTD

A soft soil slope pile foundation inclination correction structure and construction method

The present application belongs to the technical field of pile foundation engineering construction, and relates to a soft soil slope pile foundation inclination correction structure and a construction method. The soft soil slope pile foundation inclination correction structure comprises a deviation pile, a pile top force device, a grid-gravel composite pile, a grouting pipe and a pile side reinforcement area, wherein the grid-gravel composite pile is composed of a grid casing and gravel. By setting the grid-gravel composite pile in front of the pile, on the one hand, it can serve as a stress release hole, and by pumping and draining water in the hole, the passive side soil pressure during correction is reduced; on the other hand, by grouting reinforcement, the soft soil characteristics are improved, a rigid gravel pile is formed in front of the pile, the pile side reinforcement area is combined, the bearing capacity of the deviation pile is improved, the landslide thrust borne by the deviation pile is reduced, and then the reliability and stability of the deviation pile during service are increased. The present application overcomes the problems of large correction difficulty and incomplete correction of the traditional correction measures, and has good economy and implementability.
Owner:山西省交通科技研发有限公司 +3

Recyclable pile foundation reinforcement cage stabilizing triangular support structure

The utility model provides a recyclable pile foundation reinforcement cage stabilizing triangular support structure, and relates to the technical field of pile foundation engineering, the recyclable pile foundation reinforcement cage stabilizing triangular support structure comprises a first supporting part, and the length of the first supporting part is adjusted through an adjusting part; the length of the second supporting parts is adjusted through the adjusting parts, so that the ends, away from the first supporting parts, of the second supporting parts abut against the reinforcement cage reinforcing stirrups, the positioning and fastening part is arranged between the two second supporting parts, and the two ends of the positioning and fastening part abut against the second supporting parts. And the second supporting part is limited and fixed through the positioning and fastening part, so that the reinforcement cage is supported and fixed through the first supporting part and the second supporting part, the reinforcement cage can be supported in this way, field welding is not needed, the construction efficiency can be effectively improved, the reinforcement cage can be detached after being used, and the construction efficiency is improved. And recycling is carried out.
Owner:CHINA CONSTR SEVENTH ENG DIVISION CORP LTD

Method for carrying out a construction measure and construction device

The invention relates to a method for carrying out a construction measure, in particular a foundation engineering measure, with a construction device, in particular with a foundation engineering machine, which has a plurality of actuation elements and sensors for recording operating states relating to the actuation elements, and with a computer unit, by which recorded parameter values of the sensors are received when carrying out the construction measure. According to the invention provision is made in that for a construction measure a number of different defined process steps are stored, in that from one defined process step to at least one subsequent defined process step a transition takes place as a result of at least one exit rule, wherein to each exit rule at least one characteristic parameter value of at least one sensor is assigned, and in that the recorded parameter values of the sensors are checked as to the exit rules and, if they occur, a transition from an associated defined process step to a subsequent defined process step is detected.
Owner:BAUER MASCH GMBH