31results about How to "Small construction machinery" patented technology

The invention provides a high-speed railway expanding cement slurry post-grouting bulk material pile composite foundation construction method. The high-speed railway expanding cement slurry post-grouting bulk material pile composite foundation construction method comprises the steps that segmented drilling for hole forming is conducted; grouting pipes are placed in a drill hole in a segmented connection mode, and the grouting pipes are bent by 90 degrees and extend out of the two sides of a roadbed in the horizontal direction; a bulk material is put in the drill hole; a reinforced gravel cushion layer is laid on the surface of a foundation; layered filling of embankment soil is carried out on the cushion layer; foundation soil is subjected to consolidated drainage; and expanding cement slurry is injected into the grouting pipes to form rigid pile bodies. The drainage performance of the bulk material is fully utilized to enable inter-pile soil to be subjected to drainage consolidation during embankment filling, the carrying capacity of pile foundations is improved through the expanding cement slurry, properties of the inter-pile soil are improved, and the advantages such as small post-construction settlement are achieved.

The invention relates to a construction method of a mudstone-filled embankment, comprising the following steps: levelling the embankment; arranging ramming points, wherein the positions of the ramming points on an upper layer and a lower layer are staggered, and the ramming points on the second layer are in the middle of the ramming points on the first layer; filling with the ramming points at positions which is 0.5-2.0 m far away from the top of a road bed, wherein the ramming point overlapping area is not less than 1/3; during strong forced ramming construction, carrying out forced ramming construction on the ramming points accurately by a forced rammer; detecting that settlement, heavy dynamic penetration value and surface wave velocity are qualified, filling next layer of embankment; carrying out forced ramming on half-dug and half-filled embankment, and ramming towards the middle of the embankment row by row from the edge of the embankment; carrying out the forced ramming on the embankment of the boundary of filling and digging; ramming the boundary of filling and digging row by row from the edge of the embankment on the position far away from the boundary of filling and digging; levelling after ramming is finished; and then, compacting by strong vibration. The invention has the advantages that fewer force ramming processing and constructing machines are utilized, the method is relatively simple, the construction period is obviously shorter than that of sand-mixed construction, the excavation utilization ratio is improved, the cost for carrying out the secondary crushing on rock is reduced, and the project quality is good.

The invention relates to a plain soil compaction pile device. The device mainly comprises a hole forming device, a ramming and expanding device and a supporting device, wherein the hole forming deviceis composed of an immersed tube, a movable type pile tip, a bag and a fixed cylinder; the ramming-expanding device is composed of a rammer, a ramming machine, a rammer corner plate and a regulating rod; and the supporting device is composed of a supporting frame, a supporting rod and a moving vehicle. The construction method of the plain soil compaction pile device comprises the following steps that the hole forming device, the ramming-expanding device and the supporting device are installed on site, a rammer immersed tube compaction pile machine is adopted for hole immersing according to a designed pile length, water injection and humidifying are carried out in the hole forming process, the immersed tube is drawn out after the hole forming process is completed, secondary punching is carried out after the immersed tube is drawn out, falling-back soil is rammed by using the ramming-expanding device, and then filing materials are rammed layer by layer so as to complete the construction.The construction method is used so that soil between piles can be extruded and compacted to form a composite foundation. The plain soil compaction pile device and the construction method have the advantages that the construction machinery is saved, the construction cost is reduced, the working efficiency is improved, the noise and the muddy water pollution are reduced, muck is consumed and the environment is maintained.

The invention discloses a construction method for machine-made glass magnesium composite plate air pipes. The construction method comprises the following steps that (1) plates of the air pipes are cut; (2) the air pipes are spliced; (3) the air pipes are hoisted and connected; and (4) parts of the air pipes are mounted. Compared with a tradition construction method for a galvanized steel plate airpipe, the construction method for the machine-made glass magnesium composite plate air pipes has the characteristics of less construction machines, simple construction procedures, less auxiliary material using amount, small floor space, short construction period and the like. Due to the fact that the air pipes are connected without flanges, a large amount of engineering materials such as angle steel, gaskets, bolts, welding rods, rivets, oxygen and acetylene can be saved; and the average construction efficiency of the galvanized air pipe is 3 m<2>/d per person, the average construction efficiency of the machine-made glass magnesium composite plate air pipes can reach to 12.1 m<2>/d per person, and as for manufacturing and mounting of the air pipes with the same area, the construction period can be shortened obviously for the machine-made glass magnesium composite plate air pipes.

The invention discloses a moveable water intaking device for a small and medium-sized seawater desalination system. The moveable water intaking device for the small and medium-sized seawater desalination system comprises a reinforced concrete fixed base installed on the seabed, a glass fiber reinforced plastic prefabricated cylinder body mounted on the fixed base through a fixed foundation bolt, aplastic float cylinder arranged in the prefabricated cylinder body, an underwater water intaking pump fixed to the top of the plastic float cylinder and a water outlet hose connected with an outlet of the underwater water intaking pump. The lower part of the prefabricated cylinder body is provided with a water inlet grating, and a contamination draining hole is formed in the bottom of the prefabricated cylinder body; the plastic float cylinder and the underwater water intaking pump float up and down with a water intaking surface going up and down by arranging a fixed rail on the inner wall ofthe prefabricated cylinder body and a slide rail on the outer wall of the plastic float cylinder, and supporting legs are arranged at the bottom of the plastic float cylinder. The water intaking device is provided with few construction machines, and a non-submersible pump is used as the water intaking pump, internal equipment and facilities are arranged in a centralized mode, and the high flexibility and the reuse are realized.

The invention discloses a method for effectively inserting a long spiral bored pile with a post-inserted cage into a vibration pipe. According to the key points of the technical scheme, the method comprises the following construction steps that a, an assembly hole with the diameter larger than the diameter of a steel reinforcement cage is drilled in the ground; b, the steel reinforcement cage is vertically hoisted into the assembly hole; c, the vibration pipe is hoisted into the steel reinforcement cage in the assembly hole, wherein the bottom of the vibration pipe is made to abut against the conical portion of the steel reinforcement cage; and d, a vibration hammer, the vibration pipe and the steel reinforcement cage are hoisted to the upper portion of a concrete pile to be subjected to cage insertion, and insertion of the steel reinforcement cage into the concrete pile begins. By means of the method, pipe penetration operation which is originally carried out on the ground is changed to be carried out in the special assembly hole, the pipe penetration operation is changed to be in the vertical direction from the horizontal direction, original manual pipe penetration is changed to mechanical pipe penetration, the high requirements on construction sites and the arm length of a crane are lowered, and the construction efficiency is greatly improved.

The invention relates to a method for treating open-to-traffic soft soil foundation bridgehead settlement through high-pressure jet grouting piles by means of embankment hole drilling. The method comprises the following steps that (1) the treatment lengths of settlement highway sections on the two sides of an open-to-traffic highway bridge are determined, the treatment sections are divided into four subsections of the subsection I, the subsection II, the subsection III and the subsection IV, the subsection I and the subsection III are located on the left highway section, and the subsection II and the subsection IV are located on the right highway section; (2) the left highway section is closed, asphalt running pavements or concrete running pavements of the subsection I and the subsection II of the left highway section are cleaned, pavement bed courses and embankment filling which are located under the pavements are exposed, the part, from the shoulder to the slope toe, of the left highway section is kept in the original state, and passage of the right highway section is ensured; (3) running pavement subgrades are treated through the single-tube high-pressure jet grouting pile; and (4) after treatment of the running pavement subgrades is completed, the triple-tube high-pressure jet grouting pile is adopted for treating embankment slopes. The method has the advantages that the method is suitable for treatment of excessive settlement of bridgehead highway sections and also suitable for treatment of excessive settlement of any other highway sections of open-to-traffic highways.

The invention discloses an assembly type overhead platform and a construction method thereof. The platform comprises a horizontal section and slope sections at two ends of the horizontal section, and one end, away from the horizontal section, of each slope section is set up on the ground. The horizontal section comprises first supporting columns and a horizontal pavement slab on the first supporting columns. Each slope section comprises a second supporting column and a slope pavement slab, two ends of each slope pavement slab are set up on the adjacent first supporting column and the corresponding second supporting column, and the first supporting columns are higher than the second supporting columns. Compared with the prior art, the assembly type overhead platform and the construction method thereof have advantages that (1) by adoption of the prefabricated first and second supporting columns, the horizontal pavement slab and the slope pavement slab, convenience and quickness in construction are realized, waiting time for curing is avoided, and accordingly construction period is shortened; (2) small quantity of onsite construction machines, convenience in transferring, saving of manpower and material resources, energy saving and environment friendliness are realized, smoke dust and noise in onsite manufacturing are avoided, waste caused by pavement chiseling removal after completion of construction is avoided, and recycling after demounting is realized, so that construction cost is reduced.

The invention discloses a cable trench assembly which includes at least two cable trenches and a base plate assembly. The adjacent cable trenches are horizontally and detachably fixed together by means of butt joint sealing. The base plate assembly is detachably fixed to the ground or a mounting surface. The lower part of each cable trench is detachably fixed to the upper part of the base plate assembly by means of sealing and inserting. Each cable trench has a trench opening at the bottom. The upper middle part of the base plate assembly is disposed in the trench openings. The cable trench assembly of the invention is simple in structure, convenient to install and disassemble and easy to transport, and is installed by means of splicing on an installation site. The cable trench assembly can be used in renovation of old cable channels or old cable lines. The cable trench assembly can be directly used in a channel with unmovable equipment, and can be installed without moving the original equipment. Thus, time is saved. The cable trench assembly is inclusive. There is no need to reinstall the original cable and other lines.

The invention discloses an assembly type bridge splicing bent cap mounting method and a supporting structure, and the method comprises the following steps: 1, forming at least one mounting hole in thetail of a to-be-mounting bent cap, and fixedly connecting at least one connecting base to a bearing platform below a bridge; 2, hoisting the to-be-mounted bent cap to the upper end of the bridge stand column through hoisting equipment; 3, enabling a supporting rod to penetrate through the bent cap tail mounting hole, wherein the lower end of the supporting rod is fixedly connected with the connecting base on the bearing platform, the top end of the supporting rod is fixedly connected with the bent cap tail, the hoisting tool is withdrawn, and mounting of the bent cap is completed; and 4, repeating the step 3; hoisting the other bent cap and connecting the two bent caps together through pouring so as to complete mounting of the spliced bent caps; according to the mounting method, the rearanchor type and front support rear anchor type assembly type bridge bent cap mounting technology is adopted, the site construction space is reduced, normal transportation is guaranteed, constructors and construction machines are reduced, and the safety risk in construction is also reduced.

The invention provides a separated dismantling and hoisting method for large-scale corbels used for high pier construction. During separated dismounting, firstly, an opposite-pull beam is welded to the interchanges of vertical supports and connecting beams of the corbels, and the pair of corbels are oppositely pulled through pull rods; then connection between cross beams and supports of the corbels is dismantled, and the cross beams are hoisted to the ground through cranes; and the corbel supports on the two sides of a pier body are lifted through the two cranes at the same time, the pull rods are dismantled, and the corbel supports are hoisted to the ground. During corbel mounting, firstly, the supports of the pair of corbels are separately hoisted to the two sides of the pier body through the two cranes to be mounted and oppositely pulled through the pull rods; and then the corbel cross beams are hoisted, and the pull rods are tensioned through hydraulic jacks.

The invention relates to an arch bridge dismantling method which comprises the steps that at least one side of an arch bridge is filled with soil to form a cofferdam; a bridge deck is milled from one end to the other end of the arch bridge; guardrails on the two sides of the arch bridge are dismantled; two excavators are adopted to dismantle arch filling and web arch rings from the middle to the two ends of the bridge deck of the arch bridge; the excavators are stopped on the soil cofferdam, vault strip stones of the main arch ring are dismantled till the vault is broken to the soil cofferdam and the riverbed from the dismantling position, and dismantling continues to be conducted from the main arch position to the bridge abutment; and the two excavators are adopted to stop on the road surfaces at the two ends of the arch bridge to dismantle bridge abutments at the two ends of the arch bridge. By the adoption of the arch bridge dismantling method, arch bridge dismantling construction can be completed two days earlier than that of a direct impact crushing method, the aim of quickening the construction progress while construction machinery is saved is achieved, the construction efficiency is greatly improved, and meanwhile the danger of high-altitude operation is reduced.