52results about How to "Little traffic disturbance" patented technology

The present invention discloses a small-bore long distance curved pipe jacking method, belonging to the technical field of architectural construction, and comprising the following steps: constructing a working well; mounting construction equipment; leading in a measuring axis and a benchmark; taking the jacking tubes in position; jacking; grouting; constructing pipelines in the working well; and finishing the cleaning; the construction equipment comprises a development machine, a curved guide machine with an automatic measurement system, a jack and a pump cylinder, wherein the curved guide machine is connected to a back end of the development machine; the jack is mounted in the working well; the pump cylinder is mounted in a duct of the curved guide machine; the pump cylinder is used for conveying thixotropic mud to between an outer wall of the jacking tube and a soil body via a slip casting tube; during the jacking procedure, the adjacent jacking tubes are connected by a pipe joint sleeve. The method of the present invention enables the prior impossible small-bore long distance quick turn construction to be possible; the economic benefit is good, and construction precision is high; the environment problems like traffic obstruction and the like are solved successfully.

The invention discloses an asphalt recycling agent for hot recycling of asphalt on an asphalt road surface. The recycling agent comprises the following components by weight: 19-70% of an aromatic oil, 20-60% of heavy oil, 5-30% of liquid petroleum resin and 0.2-1% of a stabilizer. The invention also provides a preparation process of the asphalt recycling agent and a method for preparing recycled asphalt by use of the asphalt recycling agent. The recycling agent disclosed by the invention is good in recycling effect, easy for raw materials purchase, stable in quality, low in equipment investment, simple in processing steps, short in processing time of finished products, good in storage stability, stable in physicochemical property, and convenient for on-site operation, and is suitable for on-site hot recycling construction as a special recycling agent.

The invention provides a vehicle carrying scheme that lifting racks are used for lifting a vehicle above a vehicle top so as to perform leap-type translation in order to solve the problems that existing parking devices with the comb teeth for supporting, storing and withdrawing the vehicle are low in using ratio of the ground, inflexible in application, poor in storing and withdrawing efficiency and the like. Besides, by means of mutually communicated storing and withdrawing rack channels which are distributed below all comb-shaped parking racks of a parking queue, comb-shaped storing and withdrawing racks of carriers can directly and rapidly move and operate between each comb-shaped parking rack and vehicle storing and withdrawing port, the process of lifting and putting the road vehicle to a garage can be simply finished by the aid of comb-shaped lifting racks which are arranged at positions of the vehicle storing and withdrawing ports, a system is effectively simplified, and the efficiency is increased.

The invention provides a compensation method for roadbed settlement, which comprises the steps that: when in a roadbed construction process, on a road section which can easily settle and deform after being open to traffic, when a roadbed is filled to a height which is 30cm to 200cm from the top surface, retaining walls are built on both sides of the roadbed; bagged lime is uniformly paved on the inner sides of the retaining walls within the full-width range of the roadbed on different layers; a rubber pipe is pre-reserved on each lime bag to the outer side of the roadbed as a water injection channel in a later period; the bottom surfaces of the retaining walls are 20cm to 100cm lower than the bottom surfaces which are paved from the bagged lime, and the top surfaces of the retaining wallsare in alignment with the top surface of the roadbed; and when the roadbed settles, the water is injected into the lime bags through the pre-reserved rubber pipe, the lime absorbs the water, swells and jacks a road surface structure up. The compensation method for roadbed settlement completes the water injection on the outer side of the roadbed, has a short construction time, does not interrupt the traffic during the construction process and has little interference to the traffic; and the construction is not restricted by the weather and the environment, the settlement can be handled at any time when being found, and the construction process is controllable.

The invention relates to a reinforcement method for single beam bearing of a bridge and a construction method thereof, and provides an anchor riveted steel concrete cross beam which is provided with longitudinal pre-stressed reinforcements to serve as elastic support so as to achieve the purposes of increasing the integrity of a hollow slab, improving load lateral distribution and improving the integral bearing capacity of the bridge. The other purpose of the invention is to provide a reinforcement construction method for single beam bearing of the bridge. The method comprises the following steps: 1, transversely lofting and positioning; 2, matting on the surface and perforating; 3, cleaning holes and embedding reinforcements and anchor screws in the holes; 4, arranging U-shaped steel at the locating position through anchor riveting; 5, pouring concrete into the U-shaped steel. The method has the technical effects that certain rigidity is achieved by additionally arranging the cross beams and the purpose of improving the lateral stress is achieved. Active reinforcement can be achieved and the elastic support is also equivalently added by tensioning the longitudinal pre-stressed reinforcements; the under-bridge construction causes less interference to traffic, and the construction is convenient.

The invention relates to a prefabricated assembled pier column structure connected by inserting steel bars into corrugated pipes. The prefabricated assembled pier column structure comprises a bearingplatform, wherein a groove is formed in the upper surface of the bearing platform, a supporting column used for supporting the bottom surface of the pier column is arranged inside the groove, a plurality of corrugated pipes are vertically embedded in the periphery of the supporting column inside the groove, a plurality of main steel bars at the bottom of the pier column are in one-to-one correspondence with the corrugated pipes and are inserted into the corrugated pipes, inner filling layers are arranged inside the corrugated pipes, and concrete filling layers are poured inside the groove. Theprefabricated assembled pier column structure connected by inserting steel bars into corrugated pipes is simple.

The invention discloses a cast-in-situ inverted-T-shaped bent cap and a pier as well as a pier construction process. The cast-in-situ inverted-T-shaped bent cap comprises a rigid skeleton and a concrete structure, wherein the concrete structure is cast in the rigid skeleton; the rigid skeleton comprises a lower baffle plate, an upper baffle plate, a connecting plate and two side baffle plates, and the lower baffle plate, the upper baffle plate and the connecting plate are connected to form an I-shaped steel structure; the side baffle plates are respectively arranged at the two side edges of the lower baffle plate and extend upwards. The pier comprises a stand column and the cast-in-situ inverted-T-shaped bent cap, wherein the cast-in-situ inverted-T-shaped bent cap is arranged on the stand column. The pier construction process comprises the following steps: because the rigid skeleton is prefabricated, and the stand column is built, the rigid skeleton is lifted on the stand column, and the anchoring steel bar on the stand column is inserted into the rigid skeleton; the rigid skeleton is used as a concrete casting template to cast the concrete structure, and finally the pier is formed. The cast-in-situ inverted-T-shaped bent cap and the pier as well as the pier construction process have the advantages that the construction is convenient, no support or a few supports can be arranged, and the interference on ground traffic is smaller.

The invention relates to a regulating treatment method of railway tunnel integrated ballast bed subsidence. Due to long-time service and utilization of a tunnel integrated ballast bed or based on original defects existing in the building process, an integrated ballast bed structure is likely to subside, and the subsidence degree and the subsidence development speed are increased year by year. A hole or a weak layer at the bottom of a tunnel inverted arch is filled and repaired in a grouting tamping mode, a subsiding supporting block is reset and treated in a heightening cushion adding mode ora lifting treatment mode, construction is overall, a ballast bed and a rail are both regulated and reset pertinently, a construction period is short, traveling disturbance is small, a treatment resultis obvious, and a reasonable and efficient regulating method is provided for tunnel running maintenance.

The invention discloses a roadbed longitudinal crack treatment method based on a convex tenon type cement grouting geomembrane belt based, which comprises the following steps of: (1) drilling for coring: drilling a plurality of rows of drill holes on the side slope of a treated roadbed with longitudinal cracks by using a coring machine; (2) geomembrane belt arrangment: putting prefabricated geomembrane belts into the drill holes one by one, wherein the geomembrane belts are round pipe-shaped geomembrane belts made from geomembranes, the diameters of the geomembrane belts are the same as that of the drill holes, and the side walls of each geomembrane belt is provided with a plurality of rows of round through holes; and (3) injecting cement mortar under high pressure: injecting prefabricated cement mortar into the geomembrane belts through a high-pressure grouting machine. The invention has the advantages of reasonable design, simple steps, high construction speed, good treatment effect and low investment cost and can effectively solves the practical problems of larger investment, longer traffic closing time, greater influence on service functions of roads, poor treatment effect, and the like of the traditional roadbed longitudinal crack treatment method for areas with frozen earth for many years.

The invention discloses an in-situ cold recycled foamed asphalt mixture which comprises mineral aggregate, cement, foamed asphalt, fibers and mixing water, and the mineral aggregate comprises the following components in parts by weight: 30-40 parts of old pavement milling material with the particle size of less than 5mm, 20-25 parts of old pavement milling material with the particle size of 5mm-32mm, 10-15 parts of new stone with the particle size of less than 5mm and 6-10 parts of new stone with the particle size of 5mm-32mm; the using amount of the cement accounts for 23% of the mass of themineral aggregate, the using amount of the foamed asphalt accounts for 3-4% of the mass of the mineral aggregate, the using amount of the fibers accounts for 0.4-0.5% of the mass of the mineral aggregate, and the using amount of the mixing water accounts for 6-8% of the mass of the mineral aggregate; a pavement construction method using the foamed asphalt mixture in the scheme comprises the following steps: burdening, paving, rolling and curing. Compared with the prior art, the foamed asphalt mixture and the pavement construction method have the advantages that the constructed pavement is smooth, pavement surface layer diseases such as ruts, cracks, pits and pitted surfaces can be effectively eliminated, the gradation of an original pavement mixture can be improved, the road usability is improved, and the service life is prolonged.

The invention discloses a non-contact pantograph-catenary contact force detection method based on an image processing technology, and compared with a traditional detection method, the method is simple in equipment installation, has the characteristics of real-time performance and non-contact performance, can avoid the transformation of a pantograph head during detection, and guarantees the original dynamic performance of the pantograph head. Meanwhile, more automation and intelligence are achieved, the detection flexibility is high, and the accuracy is high; moreover, the system is small in driving interference, and is suitable for long-distance and long-time continuous tracking detection under severe environment conditions. Through multiple groups of ground dynamic experiments, the effectiveness and accuracy of the method are verified, the detection precision after the inertia force and the damping force are corrected can greatly meet the detection precision of the pantograph-catenary contact force, the research on the pantograph-catenary contact force detection method in the non-contact measurement field at present is further enriched, and the detection accuracy of the pantograph-catenary contact force detection method is improved. And meanwhile, accurate contact force data can be provided for evaluation of pantograph-catenary current collection quality and real-time fault monitoring.

The invention relates to a small-sized automatic hydraulic railway line tamping car, belonging to the field of railway line maintenance equipment. The small-sized automatic hydraulic railway line tamping car is characterized by comprising tamping mechanisms (5) and a travelling chassis (1), wherein travelling mechanisms are respectively arranged at the lower parts of the front side and the rear side along the travelling direction of the travelling chassis (1); the upper part of the travelling chassis (1) is divided into a front area and a rear area by taking the travelling direction as a benchmark; the two groups of tamping mechanisms (5) parallel to a railway line sleeper are respectively arranged at the left side and the right side of the front area; two groups of rail clamping mechanisms (3) are respectively arranged at the front side and the rear side of each group of tamping mechanism (5); a travelling down mechanism (4) capable of driving a whole machine to go up and down and rotate is arranged in the middle of the travelling chassis (1). The small-sized automatic hydraulic railway line tamping car is electromechanical integrated artificial intelligent equipment, and all operations such as transferring the equipment, automatically tamping and enabling the equipment to travel up and down can be realized by one person, so that not only is manpower greatly saved, but the working quality is also improved; the small-sized automatic hydraulic railway line tamping car has little interference to driving, and realizes the industrial upgrading of railway line turnout tamping operation from mechanization to automation.

The invention discloses a tunnel boot sleeving method replaceable supporting block ballastless track construction method. The main construction process comprises the steps of pre-burying reinforcing steel bars in a base, roughening or chiseling the base, implanting connecting reinforcing steel bars, erecting a ballast bed lower-layer reinforcing mesh, assembling a track panel on site, erecting thetrack panel and roughly adjusting in place, erecting upper-layer longitudinal and transverse reinforcing steel bars, erecting a ballast bed template, finely adjusting and fixing the track panel, pouring ballast bed concrete and plastering, loosening fasteners after initial setting, curing concrete, dismounting and transferring the template. By means of the method, the technical problem in the prior art that a supporting block is difficult to replace is solved, and the replaceable supporting block is constructed through a boot sleeving method.

The invention discloses a warm-mixing type asphalt hot-in-place recycling construction method. The method includes steps: step 1) heating a to-be-treated pavement, wherein a heating temperature rangeis 125-195 DEG C; step 2) raking the to-be-treated pavement, wherein the to-be-treated pavement raking width is 10-20cm smaller than the to-be-treated pavement heating width of each side; step 3) spraying a recycling agent and a warm mixing agent, wherein consumption of the recycling agent is 7-15% of the weight of asphalt in a to-be-treated pavement loosened material, and consumption of the warmmixing agent is 10-15% of the weight of the recycling agent; step 4) stirring, to be more specific, mixing the to-be-treated pavement loosened material, the recycling agent and the warm mixing agent,adding a new asphalt mixture, and mixing to obtain a uniform recycled mixture; step 5) paving, to be more specific, paving the recycled mixture obtained in the step 4); step 6) rolling, to be more specific, sequentially adopting a double drum roller and a tire roller for combined rolling of the paved pavement.

The invention discloses a road operation guarantee system and an intelligent implementation method thereof. The guarantee system comprises a power generation module, a condensed ice information acquisition module, a condensed ice early warning module and a snow-melting agent spraying module. The power generation module comprises a solar panel, the condensed ice information acquisition module comprises a distributed sensor and a data processor, the condensed ice early warning module comprises an ice condensation danger level alarm, and the snow-melting agent spraying module comprises a liquid storage tank body, a filter, a centrifugal pump, an electromagnetic valve, a high-pressure spray head and an infrared sensor. The operation guarantee system has the advantages of being high in efficiency, economical, environmentally friendly, high in practicability, small in traffic interference and the like. The intelligent implementation method of the system is high in intelligent degree, real-time monitoring, multi-stage early warning, automatic triggering of the snow-melting agent and quantitative spraying of the snow-melting agent can be achieved, and the safety and smoothness of running of road infrastructures in ice and snow weather are guaranteed.

The invention discloses a bituminous pavement preventive maintenance method based on swinging lane markings, which overcomes the shortcomings including long construction period and high construction cost of the existing roadway maintenance methods. The method is carried out from a traffic engineering perspective, swings construction partition positions of traffic lane markings at adequate time and amount, realizes guiding of re-distribution of driving wheel marks of vehicles, and further achieves the aims of improving road surface effective utilization, delaying development of road surface diseases and prolonging the service life of the road surface. The bituminous pavement preventive maintenance method based on swinging lane markings has the advantages of being low in cost, fast in construction speed, energy-conservation and environment-protection.

The invention belongs to the technical field of recycled asphalt, and particularly relates to a low-temperature recycled asphalt and a preparation method of a mixture, the low-temperature recycled asphalt is prepared from the following raw materials in percentage by mass: 20-35% of modified stone, 60-80% of recycled asphalt mixture, 4-10% of new asphalt, 1-4% of mineral powder and 0.5-1% of asphalt regenerant; the asphalt regenerant is prepared from the following raw materials in percentage by mass: 10 to 25 percent of solution polymerized styrene-butadiene rubber, 20 to 60 percent of 90 # petroleum asphalt, 30 to 70 percent of aromatic oil, 0.05 to 0.5 percent of cross-linking agent, 0.05 to 2 percent of plasticizer, 0.05 to 1.5 percent of dispersing agent and 0.05 to 3 percent of stabilizer. The invention aims to enable the asphalt regenerant to be completely soluble with the aged asphalt, improve the low-temperature ductility of the asphalt, enhance the anti-freezing and anti-cracking capabilities of pavements in extremely cold regions and prolong the service life of the pavements.