152results about How to "Guarantee the quality of grouting" patented technology

The invention provides a full-automatic rock bolting jumbo which comprises a chassis and a frame mounted on the chassis. A work arm and a bolt element are arranged at the front end of the frame, the bolt element is arranged at one end of the work arm and comprises a propulsion beam device and a grouting pipe frame, the grouting pipe frame is arranged on one widthwise side of the propulsion beam device and close to a bolt hole, a grouting device is arranged at the rear end of the frame and comprises a grouting pipe, and the grouting pipe moves into the bolt hole through swing and horizontal drive of the grouting pipe frame and performs grouting. The full-automatic rock bolting jumbo has the advantages that an automatic grouting function is achieved, grouting efficiency and reliability are high and the like.

The invention discloses a self-drilling type spiral anchor rod and a construction process using the self-drilling type spiral anchor rod for grouting along with drilling, stirring and curing, which are suitable for support engineering of anchor-pulling slopes in weak soil regions. A paste outlet is arranged on a rod body of the spiral anchor rod, the front end of the rod body of the anchor rod is enclosed, a spiral vane is welded at the front end of the rod body of the anchor rod, and a stirring slice is welded behind the spiral vane on the rod body of the anchor rod. The construction process using the self-drilling type spiral anchor rod for grouting along with drilling, stirring and curing comprises the following steps of: injecting cement paste while drilling by rod body of the anchor rod, so that a paste body of the cement paste is ejected out of the paste outlet of the rod body of the anchor rod, mixing the paste body and a soil body cut by using the spiral vane on the front end, uniformly stirring the soil body and the cement paste by using the stirring slice arranged behind the spiral vane, forming an irregular anchor body after curing so that the anchoring force of the anchor rod is increased. Because the drilling and the grouting are integrated, the pressure influence of subsequent grouting on the side wall of a foundation pit is avoided; and meanwhile, the grouting pressure can be effectively controlled so that the grouting quality can be ensured.

The invention discloses a reducing overlap joint combined type orifice pipe grouting method, which comprises the following steps of: drilling to a contact surface of a land rock from the ground surface, and lowering an outer sleeve; then, performing low-pressure grouting on the contact surface of the land rock and a contact segment of a bed rock by adopting an orifice closing method or an in-tube blocking grouting method until the design requirements are achieved; then, replacing cement paste in a drill hole of the contact segment of the bed rock with dense cement paste, and throwing into a short inner pipe and sinking to the bottom so as to enable the short inner pipe to be firmly connected with the outer sleeve to obtain a reducing overlap joint combined type orifice pipe; and performing orifice-closing high-pressure grouting from top to bottom section by section by utilizing the reducing overlap joint combined type orifice pipe. The method disclosed by the invention has the characteristics that the grouting quality is reliable; construction is simple; and the pipe consumption is low. The reducing overlap joint combined type orifice pipe grouting method is comprehensively used already in curtain grouting in first-stage Taocha canal head works of the middle line of a south-to-north water transfer project, and is good in effect.

The invention belongs to the technical field of prestress detection and particularly relates to a system and method for detecting compactness of a prestressed pore channel of a prestressed concrete structure.The detection system comprises low-voltage strong-current steel-bar heating equipment, a connecting wire and an infrared ray thermal imager; one end of the connecting wire is connected with the low-voltage strong-current steel-bar heating equipment, and a clamp made of red copper is arranged at the other end of the connecting wire and can be connected with a steel strand in a closely-attached mode.Compared with the prior art, the prestressed concrete structure corrugated pipe grounting compactness detection system is easy to operate, high in speed, great in applicability, high in accuracy and easy to popularize, great promotion effects are achieved for conducting construction quality control of the prestressed concrete structure, guaranteeing operation safety of a prestressed bridge or structure and prolong the service life of the prestressed bridge or structure, the system plays a great role in the technical field of prestress detection of the prestressed concrete structure, and market prospect is wide.

The invention discloses a controllable grouting method for a valve pipe sleeving method of a deep and thick cover layer. The controllable grouting method comprises the following steps that one-time forming of a drill hole is achieved by follow-pipe drilling, and by using follow-pipes which are synchronously placed down into the drill hole, an operating hole is formed; a valve pipe sleeving assembly is arranged inside the operating hole; a shell sleeving sizing agent is poured into annular gaps between the valve pipe sleeving assembly and the follow-pipes until the shell sleeving sizing agent overflows out of hole openings; after the shell sleeving sizing agent is poured, the follow-pipes are taken out of the drill hole, and the shell sleeving sizing agent is made to be in contact with a ground layer; before the complete condensation of the shell sleeving sizing agent, by sectionally plugging grouting plugs into the valve pipe sleeving assembly from top to bottom in a clamped mode, a grouting sizing agent from grout outlet holes of the valve pipe sleeving assembly is poured into the ground layer through the shell sleeving sizing agent; when the grouting sizing agent is being poured into the ground layer, by pouring grouting sizing agents with different concentrations, the controllable composite grouting is implemented. According to the controllable grouting method, the hole fault rate is effectively prevented from occurring, the pouring volume of the sizing agents is accurately controlled, the construction efficiency is improved, the using amount of raw materials is effectively reduced, and the cost is saved.

The invention relates to the technical field related to tunnel driving equipment, in particular to a grouting structure in the tunnel driving process and a grouting method matched with the grouting structure. The grouting structure in the tunnel driving process and the grouting method aim at solving the problem that in the prior art, filling a gap in the back portion of a segment cannot be achieved through synchronous grouting. The grouting structure in the tunnel driving process sequentially comprises a rock stratum and a segment stratum inwards from the inner wall of a tunnel, and accordingly a side-top arch, in unit of blocks, is formed. A support frame is arranged between the segment stratum and the rock stratum, and accordingly a hollow interlayer is formed. A base lining platform is arranged on the bottom of the side-top arch, and reserved grouting holes communicating with the hollow interlayer are formed in the positions, corresponding to the side-top arch blocks, of the top of the segment stratum. The reserved grouting holes are moveably connected with grouting pipes, and the other ends of the grouting pipes are connected with a grouting machine. The grouting structure in the tunnel driving process and the grouting method have the beneficial effects that the grouting cost is not increased, the grouting process is smooth, the utilization rate of the grout is high, the structure of equipment is simple, repairing and later maintenance are convenient, the assembling and disassembling time is short, grouting pressure can be monitored at any time, the grouting quality can be guaranteed, and a framework layer is formed on the contact surface between the grout and water glass so that flowing of the grout to a cutterhead can be reduced.

The invention discloses a grouting quality control method and a grouting quality control device for a bridge prestressed pipeline based on density parameters. According to the method, a closed grout pressure maintaining time tk is judged by detecting the water cement ratio density; and the grouting construction operation is carried out by using an intelligent grouting controller of the bridge prestressed pipeline according to the closed grout pressure maintaining time tk. The grouting quality control device comprises a grouting control console and a field grouting measurement and control box; the field grouting measurement and control box is used for acquiring field grouting flow, pressure and density data and transmitting the data to the grouting control console; the grouting control console is used for processing the data, transmitting a control command to the field grouting measurement and control box according to the process requirement of the grouting water cement ratio density and realizing the quality control over the grouting of the prestressed pipeline; and the field grouting measurement and control box is used for receiving the command to execute the opening and closing actions for a grouting pump and an electrically-operated valve. According to the grouting quality control method and the grouting quality control device disclosed by the invention, the whole-process monitoring on grouting construction of the bridge prestressed pipeline can be carried out; the guarantee for the grouting quality is provided; the difficult problem that the grouting quality cannot be ensured under the condition of artificial grouting in the prior art is effectively solved; and meanwhile, the grouting quality control device disclosed by the invention has the advantages of modular integrated structure, small size, simpleness and convenience for field mounting, strong adaptive capacity to environment, labor force saving, improved work efficiency and wide application range.

The invention discloses a bridge pre-stress duct grouting quality control method and a device thereof. According to the method, the error amount of flow of an outlet end and an inlet end is controlled, the t<k> of the measurement for keeping pressure to stage under the pressure maintaining moment is determined, and a notebook type intelligent pre-stress duct grouting controller conducts a grouting operation. The device comprises a grouting control platform and an on-site grouting measurement/control box, wherein the on-site grouting measurement/control box is used for collecting on-site grouting flow and pressure data and transmitting on-site grouting flow and pressure data to the grouting control platform, the grouting control platform is used for processing on-site grouting flow and pressure data and sending control commands to the on-site grouting measurement/control box in accordance with grouting technology requirements, then the pre-stress duct grouting quality control is achieved, and the on-site grouting measurement/control box receives commands and implements opening and closing actions to a grout pump and an electrically-operated valve. By the aid of the method and the device, the whole bridge pre-stress duct grouting construction can be monitored, the grouting quality is guaranteed, and the problem that the grouting quality cannot be guaranteed under the condition of manual grouting in the prior art is solved effectively. Simultaneously, the device is in a modularized integrated structure. The device is small in volume, convenient to install on site, good in environment adaptive capacity, wide in application and capable of saving labors and improving work efficiency.

The invention relates to a vertical connection structure of a prefabricated concrete shear wall and a construction method thereof, and belongs to the technical field of a building structure. The vertical connection structure comprises a prefabricated concrete shear wall, additional steel bars, hole filling cement-based cementing materials and cement concrete post-pouring strips, wherein one row ofstrip-shaped slot holes are reserved at each of the top and the bottom of the prefabricated concrete shear wall; the slot holes are distributed between vertical stress steel bars in the wall; when the prefabricated wall bodies are vertically spliced, the slot holes of the upper and lower layers of wall bodies are aligned and communicated in the splicing seam positions; the through length additional steel bars are put into the slot holes; and the cement-based cementing materials are poured for fixation. The concrete is cast in situ in the horizontal splicing seam positions to form the post-pouring strips. The upper layer prefabricated concrete shear wall and the lower layer prefabricated concrete shear wall are firmly connected in the vertical direction through the additional steel bars, the hole filling cement-based cementing materials and the concrete post-pouring strips; and the force is reliably transferred. The vertical connection structure of the prefabricated concrete shear wallhas the advantages that the connection performance is identical to that of the existing grouting sleeve connection structure; the integrality and the safety of the structure are effectively ensured;the stress mechanism is clear; the construction is convenient; and economic performance and practicability are realized.

The invention discloses a grouting sleeve with double inspection holes and an application method, and relates to the technical field of grouting detection. A second inspection hole is formed between agrout outlet and a grouting hole of the grouting sleeve, the grout outlet is used as a first inspection hole, and the grout outlet and the grouting hole are closed by blocking self-locking pieces. The second inspection hole is detachably closed through rigid blocking pieces, the blocking self-locking pieces comprise self-locking heads and connecting parts, the self-locking heads are connected with the grouting sleeve through the connecting parts, the self-locking heads comprise locking plates and elastic stretch rings, and the elastic stretch rings control the opening and closing of the self-locking heads by limiting the opening and closing of the locking plates. The grouting sleeve with the double inspection holes can effectively detect top defects, middle defects and horizontal defectscan be effectively detected, and a detection method is accurate, simple and fast; and the double inspection holes can further be used for repairing the slurry replenishing quality of the sleeves withthe grouting defects, and the grouting quality is ensured.

The invention discloses a grouting device for a prefabricated component. The grouting device comprises a precast concrete wallboard, a precast concrete beam, a grouting sleeve pre-buried at the bottomof the precast concrete wallboard, and a slurry circulation conveyor mechanism connected with the grouting sleeve. A sleeve outlet is arranged at the top of the grouting sleeve, and a sleeve inlet isarranged at the bottom of the grouting sleeve. The slurry circulation conveyor mechanism comprises a mixing device and a booster pump connected with the mixing device, a slurry inlet and a slurry outlet are formed in the mixing device, the slurry outlet is connected with a conveyor channel, the conveyor channel communicates with the sleeve inlet, the slurry inlet is connected with a backflow channel, and the backflow channel communicates with the sleeve outlet. The slurry circulation conveyor mechanism is arranged to realize the purpose of circulation grouting, the problems such as insufficient grouting inside the sleeve, incomplete bubble elimination, incomplete grouting at the joint or leakage of grouting at a seal chamber are effectively solved, and the connection quality between precast concrete components is improved.

The invention provides a prestressed prefabricated concrete shear wall system and a construction method thereof. The prestressed prefabricated concrete shear wall system comprises prefabricated shearwalls and prestressed reinforcements; the transversely adjacent prefabricated shear walls are connected with each other through tongues and grooves; reinforcement through passages are formed in the prefabricated shear walls; anchor bearing plates are buried in positions, corresponding to the reinforcement through passages, at the tops of the prefabricated shear walls; through holes and grout outlets are formed in the anchor bearing plates; gaps are reserved in the bottoms of the prefabricated shear walls; the gaps communicate with the reinforcement through passages; the prestressed reinforcements penetrate through the reinforcement through passages; a first reinforcement connector at the top of the prefabricated shear wall in the lower layer is correspondingly inserted in the gap of the prefabricated shear wall in the upper layer and is connected with the gap through the first reinforcement connector; the gap is filled with a filling material; a grouting pipeline is buried in the filling material; and passage grouting materials are poured in the reinforcement through passages. According to the prestressed prefabricated concrete shear wall system and the construction method thereof,the technical problems of high making accuracy requirement, high quality control difficulty, lack of effective grouting quality detection means, difficult member transportation, multiple site wet operations and longer construction period of a traditional prefabricated shear wall are solved.

The invention discloses an anti-corrosion prefabricated grouting anchor rod for a highly corrosive environment. The anti-corrosion prefabricated grouting anchor rod comprises a reinforcing steel bar. The reinforcing steel bar is sleeved with a protective casing. A clearance is reserved between the protective casing and the reinforcing steel bar. The clearance is filled with an anti-corrosion binding material to form a solid cylindrical object, then the cylindrical object stretches into an anchor rod drilling hole, and cement paste is poured in to form the anchor rod. According to the anti-corrosion prefabricated grouting anchor rod, the reinforcing steel bar is sleeved with the protective casing, and the clearance between the protective casing and the reinforcing steel bar is filled with the anti-corrosion binding material to be connected into a solid whole; due to arrangement of two anti-corrosion layers, corrosion resistance of the reinforcing steel bar is greatly improved, the reinforcing steel bar can be effectively prevented from being corroded under a severe environment condition, and therefore the service life is prolonged, and durability of the engineering structure is greatly improved; moreover, for the reason that anti-corrosion binding paste is used for binding the reinforcing steel bar and the protective casing, enough high binding force is guaranteed between the protective casing and the reinforcing steel bar, the requirements for anchor rod reinforcing steel bar corrosion resistance and pulling resistance in relevant industry standards can be met, and huge economic benefits and social benefits are achieved.

The invention discloses a method for performing quick grouting on a curtain. The method comprises the following steps of construction measurement, grouting hole layout, hole forming, hole slant measurement, drilling flushing and simple water pressurization, grouting process, grouting material, grouting devices and tools, slurrying, grouting pressure, slurry concentration, slurry conversion, endingstandard and hole sealing and the like. According to the method, curtain grouting efficiency and quality can be ensured, so that the method greatly improves grouting efficiency and meets constructionrequirements.

The invention discloses a ductile connection construction and construction method for an assembly type vertical component and a foundation. A grout sleeve is embedded in concrete of the cast-in-placereinforced concrete foundation, thus ductile connection of connection nodes between the cast-in-place reinforced concrete foundation and the reinforced concrete precast vertical component is achievedon the premise that a connecting rebar of the cast-in-place reinforced concrete foundation can be connected with a longitudinal bar of the reinforced concrete precast vertical component through the grout sleeve, the effect that rebar internal force in the connection node area can be effectively transmitted is ensured so that when a building encounters a rare earthquake, a plastic hinge can be generated in the column bottom area above the connection nodes, the problems that when the grout sleeve is embedded in the column bottom, the bottom of the vertical component is connected with the foundation, thus the plastic hinge is difficult to generate, and consequently when the rare earthquake occurs, brittle failure occurs are avoided, and the effect that damage to the bottom of the vertical component is ductile damage is ensured. The ductile connection construction and the construction method for the assembly type vertical component and the foundation have the advantages that overall stressed performance of a frame structure and ductile anti-seismic performance can be improved.

The invention discloses an inner geotextile bag sleeve valve pipe grouting construction method. On the basis of a conventional sleeve valve pipe grouting technology, a geotextile bag which can be filled with water and made by sewing impermeable geotextile is applied. After a sleeve valve pipe is inserted or first-time grouting is ended, the geotextile bag slightly longer than the sleeve valve pipe is guided to the bottom of the sleeve valve pipe through a cavity in the sleeve valve pipe, and clean water is poured into the geotextile bag till the whole cavity of the sleeve valve pipe is filled with clean water; when first-time grouting on holes to be injected with slurry starts or before repeated second-time grouting on the holes to be injected with slurry starts, the geotextile bag is taken out, and the remaining steps are the same as a conventional sleeve valve pipe grouting construction method. With the method, not only are the advantages of the conventional sleeve valve pipe grouting kept, but also the problem that slurry enters the sleeve valve pipe because of slurry mixing in the grouting process and the problem that the sleeve valve pipe is blocked because of deformation are solved, and meanwhile remaining slurry in the sleeve valve pipe can be removed effectively. The applied geotextile bag is easy to manufacture, low in cost, convenient to construct and capable of being repeatedly used and thus has very good application prospects.

The invention relates to the technical field of road and bridge construction, in particular to a grouting method for prestress vertical pipes for a bridge box beam. The bridge box beam comprises a boxbeam body, the box beam body comprises a panel, a baseplate and a web, and the panel, the baseplate and the web are internally provided with box beam reinforced concrete. The construction method comprises the following steps that 1, the prestress pipes are inserted in the box beam reinforced concrete of the web and fixed; 2, steel cables penetrate through the prestress pipes, and anchors sleeve the prestress pipes; 3, the bottoms of the adjacent prestress pipes are communicated with connection pipes; 4, the whole box beam is poured; 5, the upper ends of the prestress pipes are tensioned through the anchors and locked through steel cables; 6, a grouting pipe of grouting equipment is inserted one any prestress pipe port for grouting, and when grout of the upper end of each prestress pipe overflows, grouting is ended. The grouting method has the advantages that the grouting efficiency is greatly improved, the pouring quality is improved, and the quality defect is fundamentally avoided.

The invention discloses a tunnel waterproof curtain construction precision-guided grouting method and belongs to the technical field of underground engineering construction. The tunnel waterproof curtain construction precision-guided grouting method comprises, during side wall piling in a tunnel, firstly, forming pile removing drilled holes, of which steel reinforcement cages have a diameter 200-300 mm smaller than that of the drilled holes, deploying grouting guide pipes along with the steel reinforcement cages of the pile removing drilled holes; secondly, casting in concrete, then after theconcrete is initially set, performing segmented grouting from bottom to top via the grouting guide pipes to gradually form a waterproof curtain with an effective thickness of 0.8-1.0 D between piles.The key construction technique of the tunnel waterproof curtain construction precision-guided grouting method is composed of a construction process of precision-guided grouting of the waterproof curtain, a precision-guided grouting gun and a precision-guided grouting range computation formula. The tunnel waterproof curtain construction precision-guided grouting method saves special hole drilling for the grouting guide pipes, achieves intensive construction, is low in construction cost, rapid and convenient in construction and good in effects and integrally ensures the quality of the waterproofcurtain.

The invention provides an ultra-large area grouting construction method for a steel-concrete combined section of a cable-stayed bridge. The ultra-large area grouting construction method comprises thesteps of chiseling a notch, arranging a partition wall, arranging cushion blocks, installing a first section of steel tower and grouting a bearing plate. Notch chiseling comprises the step of pouringa tower base to the top surface of a grouting layer in the tower base construction process; except for tower base concrete with the width of 30 cm reserved on the periphery of the top face of the tower base, overpoured concrete with the width of 5 cm is chiseled away in a roughening mode, area division is conducted by arranging a partition wall, cushion blocks are arranged to support the first section of the steel tower, and grouting is achieved by directly conducting grouting from the hole position of a pressure bearing plate. Due to the fact that concrete around the tower base is used as a fence, a formwork does not need to be erected, pollution to the inclined face of the tower base during grouting is avoided, and the grouting quality is improved. As the partition wall adopts a groutingmaterial and a rubber strip, the leakproofness is enhanced; by means of the construction method, high-quality and high-efficiency construction of ultra-large-area grouting of the steel-concrete combined section of the cable-stayed bridge is guaranteed.