1072results about How to "Improve construction quality" patented technology

The invention provides a bridge girder erection machine intelligent construction control method and system based on machine vision, and relates to the technical field of intelligent control. Image information of a construction site is collected through a plurality of high-definition cameras arranged on a bridge girder erection machine; inputting the image information into a pre-trained deep learning model, identifying and positioning a target in the construction scene, and constructing a digital twinborn model of the construction scene in combination with a graph structure of a construction scene topological structure subjected to spatial perception graph convolution operation; the intelligent decision agent generates an initial construction strategy according to the current construction scene state, an improved Monte Carlo tree is adopted to search and optimize the initial construction strategy, and an optimal construction strategy is generated through multi-objective solution; and after the construction is completed, based on the digital twin model and the whole process data, analyzing the construction quality and efficiency by using a graph neural network, and generating a multi-dimensional evaluation report and optimization suggestions.

The invention relates to the field of shield tunneling, and discloses a shield tunneling control method and system based on a rock-soil particle motion trail, and the method comprises the steps: fusion deployment of various types of high-precision sensors, intelligent anti-noise data collection and preprocessing, precise physical model construction, efficient numerical simulation optimization, and multi-parameter comprehensive detection and correlation analysis. And real-time data-driven adaptive control model construction, control instruction rapid generation and transmission, closed-loop feedback and continuous optimization are realized. According to the method, multiple links including fusion deployment of multiple types of high-precision sensors, intelligent anti-noise processing, physical model construction and the like are covered, all the links have a synergistic effect, data can be accurately obtained, data quality can be guaranteed, a simulation foundation can be provided, comprehensive evaluation, intelligent control and rapid instruction transmission can be achieved, continuous optimization is achieved through closed-loop feedback, and the method is suitable for large-scale popularization and application. And finally, the construction level in all aspects is improved, and complex engineering requirements are met.

The invention discloses an unmanned aerial vehicle infrastructure construction supervision method and system based on 5G, and belongs to the field of unmanned aerial vehicle monitoring. The unmanned aerial vehicle infrastructure construction supervision system comprises an unmanned aerial vehicle module, a 5G communication module, a data processing module, a cloud storage module, a mobile terminal module, a system management module and a visual management module; the unmanned aerial vehicle module is provided with a high-definition camera, an infrared sensor and a laser range finder, and high-quality construction site data is obtained; the data processing module processes and analyzes the data acquired by the unmanned aerial vehicle; the visual management module compares data acquired by the unmanned aerial vehicle with a construction plan, can generate a real-time visual chart of the construction progress, and displays the construction progress to a supervisor in a visual manner; real-time image transmission is achieved through the system, supervisors can know the progress condition of a project in real time, discover problems in time and take corresponding measures, construction efficiency and quality are improved, and cost and risks are reduced.

The invention provides a fabricated building intelligent management method and system based on a BIM model, and the method comprises the steps: installing a sensor at a collection point, and collecting the position, angle, size and other sensing data in real time; preprocessing the collected sensing data, and carrying out cross validation on the preprocessed sensing data; calculating an actual error of each acquisition point of the preprocessed sensing data according to a cross validation result and a target error range, and generating an error analysis report; the result of the error analysis report is compared with the BIM model, and the difference between the actual component and the design model is displayed; and according to a comparison result, a correction or adjustment measure is formulated for the acquisition points of which the errors of each error analysis report exceed an acceptable range. The system comprises an equipment layout module, an error analysis module and an adjustment and correction module. The method plays an important role in improving the construction efficiency, quality and safety; and a closed loop is formed through data acquisition, analysis and feedback.

The invention discloses a self-adaptive control method for underground coal mine hole sealing and grouting, and belongs to the technical field of well hole packing. The method comprises the steps that plugging bags are sequentially installed at the cross sections of two drill holes of an underground coal mine working face, compressed air is injected into the plugging bags, and a cylindrical space between the bags is filled with multi-stage coal powder distribution materials in a layered mode and compacted; mixing ordinary Portland cement, a composite expanding agent, a carboxyl water reducer, a hydroxypropyl methyl cellulose stabilizer and water according to a preset ratio, and screening; stepwise pressure injection is implemented, and the grouting pressure and rate are regulated and controlled in a variable-rate climbing mode, a constant-pressure variable-speed mode and a proportional attenuation mode; and constant-temperature and constant-humidity maintenance is conducted on the grouting completion area, so that the desorption value of the drilling cuttings is reduced to a target value. According to the scheme, the grouting process parameters can be optimized, and the grouting quality is improved.

The invention provides a hollow slab internal mold construction system, and relates to the technical field of building construction. A first construction result acquisition module; the initial construction parameter optimization module is used for scanning the first construction result through a laser scanner, analyzing and determining first concrete compactness deviation and first construction deviation, optimizing initial construction parameters and determining first optimal construction parameters; and the construction operation module is used for executing the construction operation of the second pouring interval according to the first optimal construction parameters until the preset construction period is completed. By means of the method, the technical problems that in an existing method, due to the fact that accuracy and timeliness of construction parameter regulation and control are insufficient, overall construction errors are seriously accumulated, and overall construction quality is affected can be solved, pouring parameters and vibration parameters can be rapidly and accurately adjusted, construction management and control fineness and intelligence are improved, and construction efficiency is improved. Therefore, the problem of construction regulation lag is effectively solved, and the construction precision and the construction quality are remarkably improved.

The invention relates to the technical field of resistivity method geophysical prospecting detection, and discloses a soil reinforcement effect detection device and method based on electrical resistance tomography. The technical problems that in the prior art, an electrode device is difficult to cover the whole pile body, so that an imaging result has certain limitation, and the electrode device is difficult to adapt to pile bodies of different sizes and shapes are solved. The device comprises a rotary spray irrigation pile, a high-pressure slurry pump and an air compressor, the rotary spray irrigation pile comprises a pipe wall and a grouting pipe, a plurality of electrodes are arranged on the outer side of the pipe wall at intervals, an electrode line channel is arranged on the inner side of the pipe wall, and the electrodes are connected through a wire penetrating through the electrode line channel to form an electrode measurement network. The device has the advantages that the reinforcing process of the rotary spray irrigation pile is monitored in real time, and the physical characteristics of foundation soil or a reinforcing body are accurately analyzed.

The invention discloses a building construction site arrangement optimization method and system and a storage medium. According to the main scheme, the method comprises the steps that topographic data, building layout data and equipment layout data of a building construction site are acquired; drawing a construction site rough arrangement diagram according to the collected building layout data and equipment layout data by using CAD software, and importing the rough arrangement diagram into BIM modeling software to generate a construction site basic model; analyzing the construction site basic model of the BIM technology, and marking a problem area of the basic model; an optimization model is formed by changing the layout of a problem area of the basic model; and analyzing the optimization model to judge whether the optimization model meets the standard or not. According to the technical scheme, intelligent optimization and real-time monitoring of construction site arrangement can be realized, the construction efficiency is improved, the cost is reduced, and the construction safety is enhanced.

The invention provides a multifunctional digging and tamping machine integrating digging, shoveling, tamping and humidifying. The multifunctional digging and tamping machine comprises a small arm, a large arm and a digging machine body. According to the multifunctional digging and tamping machine integrating digging, shoveling, tamping and humidifying, the high-strength steel bucket is modified and customized, the bottom plate of the bucket is arranged to be a tamping plate, and the attached vibrator is additionally arranged, so that the digging and tamping functions are achieved, the bucket can be rotated by 360 degrees through the top end rotating device to form a bucket, construction at any angle such as front shoveling, side shoveling and inclined shoveling is conducted, and the construction efficiency is improved. A water tank, a water pipe and a spray head are additionally arranged, the water content of backfill soil can be adjusted in time to achieve the optimal tamping effect, well chamber periphery backfill and tamping construction can be conducted, the power of an attached vibrator is large, a hydraulic telescopic rod is convenient to operate, the tamping effect is good, a square tamping plate can conduct all-directional tamping by being attached to the edges and the corners, construction operation is mechanized, time and labor are saved, and the construction efficiency is improved. Construction of four working procedures can be completed at the same time only by one person, a large amount of manpower is saved, the construction quality is improved, and cost reduction and efficiency improvement are achieved.

The invention discloses a canal channel dredging construction big data basic business management system, and relates to the field of dredging construction data management. A canal channel dredging construction big data basic business management system comprises a data processing module, a data analysis module and a data management module. The method solves the problems that in the actual use process in the prior art, only business data in construction of the trailing suction dredger can be managed, and accurate decision support cannot be provided for channel dredging work, and the real-time processing of the data in the channel dredging process can be realized by collecting and processing various data in real time and applying a big data analysis method, so that the real-time processing of the data in the channel dredging process can be realized. And deep mining and intelligent analysis are carried out on the collected data, and accurate decision support is provided for channel dredging work. Besides, the system has the functions of remote monitoring, fault early warning and the like, comprehensive and efficient management of the canal channel dredging construction big data basic business is realized, the construction efficiency and quality are improved, and the construction cost and risk are reduced.

The invention relates to the technical field of concrete pouring, and discloses a concrete cooling water flow regulation monitoring system and method based on an image technology, and the method comprises the steps: embedding cooling water flow state factors into a concrete temperature field calculation process, and analyzing concrete state parameters and image data of the cooling water flow state. The temperature field of the concrete is calculated, and the corresponding cooling water flow regulation control instruction is generated based on the temperature change trend, so that the intelligent level of the concrete cooling process is improved, uniform cooling is ensured, local optimized cooling is realized, it is ensured that the concrete is kept in a safe temperature range in the construction period, the cracking risk is reduced, and the construction quality is improved. The strength and durability of the concrete are improved, and the construction quality and efficiency are also improved.

The invention discloses a prediction model-based anchor mooring force prediction method for an immersed tube workboat. According to the method, water area environment characteristics, ship body posture characteristics, anchor mooring parameter characteristics and construction state characteristics are used as key data characteristics for predicting the anchor mooring force of the immersed tube construction ship; according to the method, an anchor cable tension prediction model is constructed, historical data, reduced scale physical model test data, numerical simulation data and short-term test data are subjected to data fusion to form a data set, and the model is trained and verified; and finally, predicting the tension value of each anchor mooring line on line by using the trained anchor mooring line tension prediction model. According to the method, the stress condition of each anchor mooring line can be predicted in real time under multiple working conditions (such as sinking, leveling, steering and self-storage states), and powerful support is provided for accurate positioning and safety control of installation and construction of the immersed tunnel.

The invention relates to the technical field of underwater dredging construction. The underwater dredging construction method comprises the steps that environment information of a to-be-constructed area is obtained, the environment information is input into a sludge physical property model, sludge physical property information is obtained, the sludge physical property information is compared with a preset sludge standard value, a comparison result is obtained, and the sludge type is determined based on the comparison result. And selecting a sludge construction mode corresponding to the sludge category based on the sludge category, adjusting working parameters of the construction equipment according to the sludge construction mode, and after the working parameters are adjusted, executing dredging construction until the dredging task of the to-be-constructed area is completed. The method has the effects of improving the construction efficiency and reducing equipment damage.

The invention discloses a hoisting construction method for a basket-shaped structure of a deepwater jacket, and relates to the related technical field of hoisting devices, the method comprises the following steps: reading a preset hoisting scheme; dynamically monitoring the hoisting construction process to obtain first dynamic monitoring information; matching a first monitoring data set of the first monitoring point position; judging whether the first monitoring data set conforms to a first predetermined constraint of a first-stage scheme or not; if yes, whether the first monitoring data set meets a preset final assembly constraint or not is judged; if yes, a second-stage scheme is started to conduct assembly fine adjustment construction control on the target jacket, and hoisting construction of the target jacket is achieved. The technical problems that in existing jacket construction, various parameter changes in the hoisting process are difficult to accurately master in real time, large potential safety hazards and precision errors exist, then the hoisting construction efficiency and safety are poor, and the jacket final assembly precision is insufficient are solved. The technical effect of improving the hoisting construction efficiency, safety and construction quality is achieved.

The utility model provides a pile foundation concrete pouring over-pouring height measuring device which comprises an installation frame, a winding drum mechanism arranged on the installation frame, a coil spring arranged in the winding drum mechanism, a measuring rope with one end fixed and wound on the winding drum mechanism and a fixing piece connected with a reinforcement cage. The fixed part is arranged on the mounting frame, the floating ball mechanism is movably connected to the fixed part and connected with the other end of the measuring rope, the ratchet wheel is fixedly connected to the winding drum mechanism, and the alarm mechanism is arranged on the mounting frame and used for being matched with the ratchet wheel. The pile hole concrete surface ascends to push the floating ball mechanism to ascend, and then under the action of the coil spring, the winding drum measuring rope is driven to be shortened, the winding drum mechanism and the ratchet wheel are driven to rotate, so that the alarm mechanism matched with the ratchet wheel sends out a signal to remind constructors of the concrete pouring condition, and accurate control over the over-pouring height is achieved. Tediousness and uncertainty of manual judgment are avoided, and construction efficiency and construction quality of the pile foundation are effectively improved.

The invention relates to the technical field of cranes, in particular to a tower crane intelligent remote early warning method and system.The method comprises the steps that working environment data and regional network environments of all target tower cranes are collected, and environment influence characteristic indexes of all the target tower cranes are obtained through comprehensive analysis; acquiring working condition data and system performance data of each target tower crane, and comprehensively analyzing to obtain a working abnormity risk assessment index of each target tower crane; and carrying out risk assessment on each target tower crane according to the abnormal working risk assessment index and the environmental influence characteristic index of each target tower crane to obtain an assessment result and carrying out early warning. According to the intelligent remote early warning method and system for the tower crane, the abnormal operation and fault risks of the tower crane are comprehensively analyzed, the abnormal working risks of the tower crane are evaluated and early warned, a more accurate maintenance plan can be made, the situation of excessive maintenance or insufficient maintenance can be avoided, and the maintenance efficiency and effect can be improved.

The invention discloses an assembly type segmented prestressed concrete tower drum structure and a construction method, the assembly type segmented prestressed concrete tower drum structure comprises a drum body formed by splicing a plurality of concrete drum sections in a segmented mode in the height direction, the diameter of the concrete drum sections is reduced in the height direction of the drum body, and the concrete drum sections are formed by splicing a plurality of prefabricated pipe pieces into a whole through bent bolts. The fabricated prestressed concrete structure is adopted, and the bearing capacity, rigidity and crack resistance of the tower drum are remarkably improved. The segmented prestress can change the prestress value gradient of the tower barrels with different heights, the performance design of the tower barrels is achieved to meet the requirements of different scenes, and the fatigue life and the service cycle of the tower barrels are prolonged. Prefabricated pipe pieces are produced in a factory in a standardized mode, prestress is tensioned, on-site overall prestress tensioning is avoided, the construction efficiency and the construction quality are improved, only embedded bolt connection needs to be completed on site, construction is convenient and fast, connection is reliable, and wide application prospects are achieved.

The invention discloses a honeycomb type combined loading pad and a method. Comprising a soft double-bottom honeycomb bag (1) and a U-shaped elastic cushion block (2), the soft double-bottom honeycomb bag (1) comprises an upper bonding surface (4) and a lower bonding surface (5) which are arranged in parallel, and a pair of honeycomb cavities (6) are transversely arranged between the upper bonding surface and the lower bonding surface; and two U-shaped arms of the U-shaped elastic cushion block (2) are respectively inserted into the corresponding honeycomb cavities (6). The device is high in universality and low in use cost.

The invention discloses a building performance monitoring system based on BIM and Internet of Things technology, and relates to the field of building performance monitoring, comprising: a BIM model construction and integration module creating and integrating a building BIM model; the Internet of Things sensor deployment module deploys a sensor; the data acquisition and transmission module acquires and transmits data; the data processing and analyzing module processes and analyzes the data; the building performance evaluation and early warning module performs evaluation and early warning; and the user interaction and visualization module realizes interaction and visualization. And each module has corresponding technologies, such as IFC format integration and low-power consumption sensor, so that the performance is improved. The building performance can be effectively monitored, the BIM model is integrated, comprehensive monitoring, intelligent analysis, accurate evaluation and early warning are achieved, interaction visualization is convenient and fast, safe and comfortable operation of the building is guaranteed, and management and maintenance are convenient.

The invention provides a space cable plane suspension bridge empty cable shape monitoring system comprising a plurality of data acquisition devices used for acquiring target data in a space cable plane suspension bridge empty cable state; the first empty cable state determination device is used for determining a first empty cable state according to the target data acquired by the plurality of data acquisition devices; the second empty cable state simulation equipment is used for simulating and determining a second empty cable state of the space cable plane suspension bridge meeting the construction standard; and the key point monitoring equipment is used for monitoring each key point of the first empty cable state by referring to the second empty cable state, and outputting a key point adjustment strategy. According to the system, the change difference problem of the space cable plane suspension bridge in different stages is considered, the second empty cable state is simulated, the first empty cable state and the second empty cable state are compared, the key point is determined, and the adjustment strategy is output, so that the construction accuracy and safety are improved, the construction control process is optimized, and the construction efficiency is improved. And finally, the overall performance and the construction quality of the bridge are improved.

The invention relates to the field of waterproof coatings, and discloses a tunnel macromolecular self-cleaning special waterproof coating which comprises polyurethane resin, epoxy resin, fluorosilicone resin, titanium dioxide nanoparticles, zinc oxide nanoparticles, aluminum triphosphate, silicon dioxide nanoparticles, aluminum oxide microparticles, graphene nanosheets, a flexibilizer, a curing accelerator and a solvent. According to the coating, collaborative optimization of functions of all layers is achieved through a multi-layer composite structure, the bottom layer waterproof layer provides efficient waterproofness and weather resistance, the middle reinforcing layer greatly improves the mechanical strength and wear resistance of the coating, the surface layer self-cleaning layer adopts a fluorosilicone resin matrix and introduces super-hydrophobic nano-particles, the surface is endowed with an excellent self-cleaning function, and the self-cleaning effect is good. Dirt adhesion is prevented; and automatic cleaning is facilitated. The coating effectively solves the common problems of leakage, pollution accumulation, abrasion and peeling in a tunnel environment, the protection performance of a coating is remarkably improved, the service life of the coating is remarkably prolonged, and an efficient and lasting protection solution is provided for building structures such as tunnels and subways.

The invention belongs to the technical field of soft soil foundation treatment, and discloses a soft soil foundation road reinforcing structure and a construction method thereof.The reinforcing structure comprises a plurality of cement soil mixing piles arranged in a soft soil foundation in an array mode; the multiple core piles are used for being inserted into the cement-soil mixing pile before initial setting of the cement-soil mixing pile, the multiple core piles and the multiple cement-soil mixing piles are arranged in a one-to-one correspondence mode, and each core pile comprises a pipe pile and a reinforcing piece which is filled and fixed in the pipe pile; the geogrid layer is laid on the top of the soft soil foundation and located above the multiple core pile areas, and a plurality of meshes are formed in the geogrid layer; a mattress layer; and a filler. The integrality, water stability and certain strength of the road soft soil foundation can be effectively improved, the bearing capacity and shear strength of the road subgrade are remarkably improved, meanwhile, differential settlement of the road subgrade can be effectively controlled by reinforcing the soft soil layer, and the construction quality is improved.

The invention discloses a prefabricated building construction monitoring method based on a digital twinning technology, and the method comprises the following steps: constructing a digital twinning model of a prefabricated building, and setting a virtual cursor of each component; three-dimensional reconstruction is carried out on the actual installation conditions of the components, and actual measurement data of each component is obtained; comparing the measured data with the virtual cursor to obtain attitude deviation data of the component; presetting a tolerance threshold range, and comparing the attitude deviation data with the tolerance threshold range to obtain a deviation component exceeding the range; different marks are made on the deviation component, and the deviation component is adjusted based on the different marks; and uploading the adjusted component attitude data to the digital twin model, and updating the component deviation analysis result in real time until the component installation is qualified. According to the invention, real-time monitoring and rapid adjustment of the mounting precision of the component in the construction process of the fabricated building are realized, the construction efficiency and quality are improved, and effective technical support is provided for precise construction of the fabricated building.

The invention provides a ceramic tile back surface charged bead effect scavenger and a preparation method thereof, and belongs to the technical field of building materials. The scavenging agent comprises the following components in percentage by mass: 0.5-5% of a silane coupling agent, 2-10% of acrylate-vinyl versatate copolymer latex powder, 1-8% of silicon dioxide nanoparticles, 8-20% of an alkaline component, 3-10% of a bio-based surfactant, 1-5% of lipase, 8-20% of an adsorbent and 40-70% of a filler. The remover can effectively remove the bead effect on the back of the ceramic tile, improve the adhesive property of the ceramic tile, improve the durability, especially the adhesive property of the ceramic tile after water immersion and thermal aging, reduce the hollowing phenomenon and prolong the service life of the ceramic tile; the scavenger has the advantages of low formula cost, easily available raw materials, low toxicity, environmental protection, simple and fast use method, improvement of construction efficiency and construction quality, easy operation, cost saving, and enhancement of safety and environmental protection.

The invention discloses an automatic mixing and conveying device for premixed light flow-state solidified soil, and relates to the technical field of preparation of flow-state solidified soil, the automatic mixing and conveying device for premixed light flow-state solidified soil comprises a mixing system, a conveying system and a control system; the mixing system comprises a mixing bin, a soil feeding module, a water inlet device, a curing agent feeding module, an additive adding module and a stirring device; the conveying system comprises a pre-storage bin and a pumping device; the mixing system is used for mixing quantitative soil, water, a curing agent and an additive to prepare light flow-state solidified soil, the light flow-state solidified soil is conveyed to the pre-storage bin, and the pumping device is used for pumping the light flow-state solidified soil in the pre-storage bin to a designated position for construction. The whole preparation process and the pumping process of the light flow state solidified soil are both achieved through a control system, accurate control over the material mixing amount and uniform mixing of a mixture can be achieved, and the preparation efficiency and the construction quality of the light flow state solidified soil are improved.

The invention belongs to the technical field of engineering project material intelligent distribution management, and discloses an intelligent building material distribution management system, which comprises a monitoring area division module, a construction progress analysis module, a material demand identification module, a distribution route planning module, a distribution sequence planning module, a distribution process monitoring module and a distribution abnormity identification module. Whether material distribution needs to be carried out or not is judged based on the construction progress of each construction unit, smooth construction can be guaranteed through the analysis mode, material supply and construction requirements can be accurately matched, resource allocation is greatly optimized, and inventory overstock is reduced. According to the invention, during material distribution, the abnormal material weight condition and the abnormal equipment operation condition in the material distribution process corresponding to each target construction unit are analyzed, whether the material distribution process corresponding to each target construction unit is abnormal is judged, the weight abnormity can be accurately identified, the material allocation can be optimized, the supply and demand balance is ensured, and the material distribution efficiency is improved. Stock overstock and waste are reduced, and cost is reduced.

The invention relates to a foam concrete light-weight embankment capable of alternately maintaining traffic by lifting a longitudinal slope during reconstruction and expansion of a road, which adopts foam concrete to construct and expand the embankment and to lift the embankment by the longitudinal slope, so that the dead weight of the embankment is reduced, the settlement amount of a new roadbed is reduced, the differential settlement between the new roadbed and the old roadbed is reduced, and the later maintenance cost is reduced; during foam concrete construction, a plurality of reinforcing mesh anchoring measures are set layer by layer, so that the stability of the reinforcing meshes in the foam concrete pouring process is improved, and the construction quality of the light embankment is further improved; the new roadbed and the old roadbed are anchored through the reinforcing mesh hanging type supports, the Z-shaped supports and the claw-shaped supports, and the integrity between the original roadbed and the widened longitudinal slope lifting embankment is improved.

The invention relates to the technical field of pipe jacking construction, in particular to municipal road pipe jacking construction safety equipment which comprises a supporting piece, an inclined strut and a construction piece, the inclined strut and the construction piece are arranged on the two sides of the supporting piece respectively, one end of the inclined strut is fixedly connected to the ground, and the other end of the inclined strut is fixedly connected to the supporting piece; the construction piece is fixedly connected to the supporting piece. The construction piece applies force to the supporting piece, the inclined strut supports the supporting piece, the stability of the supporting piece is improved, deviation of the construction piece is reduced, and the construction quality is improved.

The utility model discloses a steel-concrete combined hanging box wall plate water stopping and slab staggering preventing connecting structure which comprises a plurality of pairs of C-shaped pieces and a plurality of I-shaped pieces, each pair of C-shaped pieces is fixedly installed on a hanging box wall plate used for being matched with the connecting structure for use, and each hanging box wall plate comprises a plurality of sections of steel plate piles which are sequentially arranged; the steel sheet pile comprises a first steel sheet pile section, a middle steel sheet pile section and a tail steel sheet pile section, a connecting cavity is formed between the first steel sheet pile section and the tail steel sheet pile section, all pairs of C-shaped pieces are arranged in the diameter direction of the hanging box, and the two C-shaped pieces in the same pair are installed on the first steel sheet pile section and the tail steel sheet pile section correspondingly; openings of the C-shaped pieces are formed in the sides close to each other, and the I-shaped pieces are inserted into the two C-shaped pieces in the same pair at the same time through the openings of the two C-shaped pieces. The water stop structure has a good water stop effect on the wall plate connecting section.