135results about How to "The construction method steps are simple" patented technology

The invention discloses a construction method of a large-volume concrete bearing platform with one-time pouring in winter, comprising the following steps of: step 1, binding steel reinforcement cages; step 2, laying cooling water pipelines and temperature measuring elements; step 3, constructing formed templates, wherein the construction process comprises delimiting template lines and constructing formed brick dies; step 4, pouring concrete; and step 5, conserving and finishing surface: finishing surface in time when completing the pouring of the concrete, carrying out the surface finishing twice, carrying out the first surface finishing when pouring the concrete to the top, carrying out the second surface finishing when the concrete is initially congealed, and adopting a mode that external stores water for conserving when the concrete is initially congealed. The invention has the advantages of reasonable design, simple construction method step, convenient operation, short construction period, one-time pouring molding and strong maneuverability, the large-volume concrete bearing platform constructed for molding in winter has good quality, the poured concrete is not frozen, and the surface of the bearing platform can not have temperature cracks.

The invention discloses a tunnel diversion composite type waterproof and drainage system which comprises a surrounding rock waterproof and drainage system and a tunnel internal drainage system, wherein the surrounding rock waterproof and drainage system comprises a waterproof and drainage layer and a surrounding rock water drainage and collection pipe; the waterproof and drainage layer consists of multiple waterproof and drainage plates arranged in a butting manner; the surrounding rock water drainage and collection pipe consists of a concrete prefabricated pipe and a cover plate; the tunnel internal drainage system comprises a left water collecting tank, a right water collecting tank, a tunnel internal water drainage and collection pipe, a left drainage pipe and a right drainage pipe; the tunnel internal water drainage and collection pipe is arranged on a water collecting pipe base. The invention also discloses a construction method and a use method for the tunnel diversion composite type waterproof and drainage system. According to the tunnel diversion composite type waterproof and drainage system as well as the construction method and the use method thereof disclosed by the invention, the convenience for construction is realized; the diversion of surrounding rock waterproof and drainage and tunnel internal waterproof and drainage is realized, two functions of resisting water and draining water are integrated, the overall waterproof and drainage effects of the integral tunnel are improved, and the difficult problems of tunnel crack, leakage, frost heaving, water logging or icing and the like of a tunnel can be thoroughly solved.

The invention discloses an integral lifting template of a main pylon of a single-pylon cable-stayed bridge without dorsal cables and a lifting construction method thereof. The method comprises the following steps of: (1) preparation before construction; (2) lower bridge structure construction; (3) upper bridge structure construction comprising the following construction processes of: lower pylon concrete pouring construction, lower beam construction, middle pylon segmental pouring construction, alternate segmental pouring construction of an upper pylon and a middle suspension cable beam segment and stayed-cable mounting, wherein an integral lifting template is used for segmental construction on both the middle pylon and the upper pylon; and (4) bridge surface system construction. The integral lifting template has reasonable structural design, convenient processing, manufacture, mounting and arrangement, low investment cost, simple construction method and steps and high construction speed and can quickly and safely complete the construction task of the main pylon of the cable-stayed bridge by utilizing simple construction tools and investing less labor, and various technical indexes of the main pylon of the constructed and molded cable-stayed bridge meet the requirements of the design and a construction specification.

The invention discloses an intelligent urban rainwater storage regulation system and a construction method thereof. The system comprises a rainwater storage regulation tank, a water through device, a filter device and a water distribution tank. A first water level sensor and a second water level sensor are arranged on the inner side of a park pool, and the water through device is positioned between the first water level sensor and the second water level sensor and close to the second water level sensor. A silt clearing tank is arranged at the top of the park pool, the filter device is connected with a residence region and a road surface through a first water inlet pipe and a second water inlet pipe respectively, and the rainwater storage regulation tank is connected with the residence region and the water distribution tank through a first water drain pipe and a second water drain pipe respectively. The method includes steps of survey setting-out, rainwater storage regulation tank construction, filter device construction, water distribution tank construction, road surface construction, pipeline connection arrangement and rainwater storage regulation system commissioning. The construction method is simple in step, rainwater quick drainage and storage are facilitated, flood or waterlogging is prevented, and stored rainwater can be used for irrigation and domestic water.

The invention discloses a construction method of an auxiliary jacking of a large-span steel box girder suspension cable tower, and belongs to a large-span bridge construction method. The construction method comprises the following steps that step A, assembly platform piers, middle piers and end piers are arranged in the construction area, assembly brackets are assembled between the assembly platform piers, and a sideway girder is arranged on the assembly brackets; and step B, a nose girder is assembled on the assembly brackets, a first assembling section of a steel box girder is continuously assembled at the back end of the nose girder, and a jacking sliding block is mounted at the tail end of the steel box girder. According to the construction method, by arranging the suspension cable tower and the nose girder auxiliary jacking, deflection and stress of the steel box girder caused by a large hogging moment of large-span steel girder jacking cantilever are reduced; by designing multi layers of suspenders on the suspension cable tower, the structural stress and linear changes of the steel box girder meet the design requirements in the construction process; by arranging jacking devices and cushioning with sliding cushion blocks, the elevation multiple adjustment method is realized, and the linear changes of the steel girder in the jacking process are solved; and adjustable guide is designed, and a corrective device is adapted to the linear changes of the steel box girder.

The invention discloses a novel riverway ecological slope protection structure and a slope protection method thereof. The novel riverway ecological slope protection structure includes ecological blocks and anchor nails, and the two ecological blocks adjacent to each other in an up-down or left-right mode are fixedly connected by the anchor nails. The slope protection method includes the steps of riverway slope protection surface cleaning, foundation construction, ecological block machining, ecological block construction, water retaining mechanism removal, and slope protection maintenance. According to the novel riverway ecological slope protection structure, connection strength and stability between the two adjacent ecological blocks adjacent to each other in the up-down or left-right modeare greatly improved through the anchor nails, thus the stability of the entire ecological slope protection structure is improved, the protection effect of the slope protection structure is improvedto prevent water and soil loss on the riverway slope protection surface, the slope protection method is simple in steps and high in practicability, slope protection construction of different riverwayslope protection surfaces can be met, the construction efficiency is high, the construction period is shortened, and the effect of preventing soil and water loss is significant.

The invention discloses a steel pipe concrete column-steel beam outer separation plate type node structure and a construction method thereof. The node structure comprises a steel pipe concrete column, a steel beam located on the outer side of the steel pipe concrete column, and a beam column connection structure connected between the steel pipe concrete column and the steel beam; the steel pipe concrete column and the steel beam are arranged vertically; the steel pipe concrete column comprises a rectangular steel pipe column, four groups of open vertical ribs and a core concrete structure; the beam column connection structure comprises an upper external separation plate and a lower external separation plate; and the outer end of the upper part of the steel beam is fixedly connected with the upper external separation plate, and the outer end of the lower part of the steel beam is fixedly connected with the lower external separation plate. The construction method of the node structure comprises the following steps: step 1, assembling and welding the open vertical ribs and the rectangular steel pipe column; step 2, welding the beam column connection structure; step 3, connecting the steel beam; and step 4, pouring concrete. The steel pipe concrete column-steel beam outer separation plate type node structure is reasonable in structure, simple and convenient to construct, good in use effect and clear in force transmission; stress concentration and deformation concentration problems of a steel pipe concrete column-steel beam node can be effectively alleviated, and the seismic resistance is good.

The invention discloses a fissure-contained rock soil stratum prestressed anchor cable grouting and anchoring construction method. Multiple prestressed anchor cables uniformly distributed on the same one plane are adopted to reinforce a slope to be reinforced; the method comprises the following steps: (1) the rock mass joint fissure development degree of each rock stratum is determined; (2) the lengths of anchoring sections and the hole port positions of anchor cable holes are determined; the prestressed anchor cables include anchor cable bodies, primary grouting pipes and secondary grouting pipes; anchoring tools are mounted at the back ends of the anchor cable bodies; and the anchor cable bodies include multiple steel strands; and (3) the prestressed anchor cables are grouted and anchored: when any one prestressed anchor cable is grouted and anchored, the construction includes the steps of drilling, placement of the anchor cables, normal-pressure grouting, high-pressure grouting, tensioning of the anchor cables and anchor sealing. The method is simple in steps, reasonable in design, convenient to construct, high in construction efficiency and excellent in use effect, and can conveniently and quickly finish the reinforcing process of the slope to be reinforced; and the adopted prestressed anchor cables are low in cost and higher in anchoring force, and can effectively reinforce the slope to be reinforced.

The invention discloses a monitoring treatment device for riverway construction fracture surface bottom mud and a construction method of the monitoring treatment device. The monitoring treatment device comprises bottom mud monitoring boxes, a bottom mud treatment pond and a bottom mud recycling pond; the bottom mud treatment pond is connected with the bottom mud recycling pond through a sludge output pipe which is provided with a mud pumping pump; a water inlet pipe is arranged on the top face of the bottom mud treatment pond and is communicated into water of a riverway; a stirring mechanism is arranged in the bottom mud treatment pond; the bottom mud monitoring boxes are connected with the bottom mud treatment pond through conveying pipes; and every two adjacent bottom mud monitoring boxes are connected through the corresponding conveying pipe. The construction method of the monitoring treatment device includes staking out in survey, foundation pit excavation, bottom mud treatment pond construction, bottom mud recycling pond construction, bottom mud monitoring box arrangement and bottom mud monitoring pilot running. The monitoring treatment device is simple in structure and remarkable in effect of riverway construction fracture surface bottom mud monitoring and clearing, the riverway construction fracture surface strength is improved, the bottom mud high in pollutant content can be conveniently treated, and secondary pollution formed by release of pollutants in bottom mud is prevented.

The invention discloses a rotary drilling device used for sand foundation cast-in-place pile drilling pretreatment and a construction method of the rotary drilling device. The rotary drilling device comprises a supporting table, a bottom plate, a driving mechanism, a rotary mechanism, a drilling mechanism and a positioning mechanism; the driving mechanism comprises a motor, a driving gear and a driven gear, and the rotary mechanism comprises a first positioning cylinder, a second positioning cylinder, a cantilever, a rotary shaft and a rotary assembly; the first positioning cylinder is connected with the second positioning cylinder through the cantilever and internally provided with a transmission shaft, and the rotary shaft is sleeved with the second positioning cylinder; and the drillingmechanism is connected to the rotary shaft, and the drilling mechanism is sleeved with the positioning mechanism. The construction method of the rotary drilling device comprises the steps of pile positioning measuring and sampling, pile casing embedment, rotary drilling device construction, pile casing earthwork backfilling, pile casing pulling out and rotary drilling device clearing. According to the rotary drilling device, the structure is simple, the manufacturing cost is low, quick positioning can be achieved, the drilling efficiency is improved, and the construction method is simple in step and can achieve pretreatment construction of foundation cast-in-place piles with different soil property requirements.

The invention relates to an anti-floating reinforcement structure of an in-operation subway tunnel and a construction method. The anti-floating reinforcement structure is characterized in that an internal reinforcement structure is arranged inside a tunnel lining, and an external reinforcement structure and an anti-floating structure are arranged outside the tunnel lining; the internal reinforcement structure includes a steel ferrule and a stiffening plate which are arranged in a spaced manner, the stiffening plate and the steel ferrule are welded, and the steel ferrule is fixed to the tunnellining through wall-hanging expansion bolts; the external reinforcement structure includes grouting reinforcement soil bodies, and the grouting reinforcement soil bodies are symmetrically arranged onthe slightly upper portions of the tunnel lining; and the anti-floating structure includes anchor rods, the anchor rods are arranged at the bottom of the tunnel lining, the top ends of the anchor rodsare anchored inside a track bed, and grouting bodies are arranged at the around the positions, below the tunnel lining, of the anchor rods. By means of the anti-floating reinforcement structure, influences of the surrounding soil disturbance on the subway tunnel can be reduced, the anti-floating performance of the subway tunnel and the stiffness of the tunnel are increased, and the floating amount of the tunnel and the fracture surface deformation amount are reduced when the groundwater level rises or covering soil bodies of the tunnel are excavated.

The invention discloses a steel reinforced concrete structure formwork sleeve threaded rod pulling construction method. The method comprises the steps that firstly, a section steel framework is installed; secondly, steel bars are bound; thirdly, a formwork sleeve threaded rod pulling system is installed preliminarily, specifically, the formwork sleeve threaded rod pulling system comprises a plurality of transverse sleeve threaded rod pulling devices and a plurality of longitudinal sleeve threaded rod pulling devices, the transverse sleeve threaded rod pulling devices and the longitudinal sleeve threaded rod pulling devices each comprise two formwork sleeve threaded rod pulling pieces, and each formwork sleeve threaded rod pulling piece comprises a connecting steel bar, an inner embedded sleeve, an outer embedded sleeve and an outer threaded rod; fourthly, formworks are installed and reinforced; fifthly, subsequent installation of the formwork sleeve threaded rod pulling system is conducted; sixthly, concrete is poured; and seventhly, the formworks are removed. The method is simple in step, reasonable in design, easy and convenient to implement and good in using effect, by the adoption of the formwork sleeve threaded rod pulling pieces based on straight threaded sleeves, the steel reinforced concrete structure formworks are fixed easily and effectively, and holes do not need to be drilled in the section steel framework.

The invention discloses a jacking system for a closure section of a continuous rigid frame bridge and a jacking deviation rectifying method. The jacking system is composed of a top plate jacking system and a bottom plate jacking system. The top plate jacking system comprises two sets of top plate embedded bases arranged at the ends of two cantilever beam sections of the continuous rigid frame bridge correspondingly, top plate rigid supporting structures supported between the two sets of top plate embedded bases and a top plate jacking mechanism. The bottom plate jacking system comprises two sets of bottom plate embedded bases arranged at the ends of the two cantilever beam sections correspondingly, bottom plate rigid supporting structures supported between the two sets of bottom plate embedded bases and a bottom plate jacking mechanism. The jacking deviation rectifying method comprises the steps of (1) measurement of position deviation of the cantilever beam sections, (2) adjustment of elevation deviation of the cantilever beam sections, (3) deviation rectifying adjustment and (4) longitudinal jacking. The jacking system is simple in structure, reasonable in design, easy and convenient to construct and good in using effect, the jacking deviation rectifying process of the cantilever beam sections on the two sides of the closure section can be completed easily, conveniently and rapidly, and the rectifying requirements of lateral deviation and reverse deviation of the cantilever beam sections can be met.

The invention discloses a tunnel construction method based on an inverted arch and inverted arch filling layer replaced steel and concrete combined structure. A tunnel secondary lining of a construction tunnel is formed by splicing an arch wall lining and a tunnel bottom lining, the tunnel bottom lining is a prefabricated inverted arch, and the inverted arch and inverted arch filling layer replaced steel and concrete combined structure is formed by the prefabricated inverted arch and a steel truss structure arranged on the prefabricated inverted arch. During construction tunnel construction, the steps including the first step of tunnel excavation, the second step of preliminary bracing, the third step of prefabricated inverted arch splicing construction, the fourth step of steel truss structure construction and the fifth step of arch wall lining construction are included. According to the method, step design is reasonable, construction is simple and convenient, the usage effect is good, a cast-in-place tunnel bottom lining is replaced with the assembled inverted arch formed through connection of three inverted arch prefabricated pieces, a concrete filling inverted arch filling layer is replaced with the steel truss structure, only alignment splicing is needed on the site, the tunnel inverted arch and tunnel filling construction process can be greatly simplified, the arch wall lining construction quality can be ensured, and the construction efficiency is improved.

The invention discloses a water purifying device of regenerated water supplied lakes and a construction method thereof. The water purifying device comprises a water purifying box and a mud adsorption device. A retaining wall is arranged on the water purifying box. The top end of the retaining wall is provided with a water baffle plate. A purifying cavity, a water storage cavity, and a mud filtering cavity are arranged in the water purifying box. The bottom end of the retaining wall is provided with a water gate. The mud adsorption device comprises a dredging pipeline, a baffling device, and a water suction pump. The baffling device is fixedly connected to the end part of the dredging pipeline. The construction method comprises the following steps: (1) carrying out setting-out survey; (2) digging a ground pit; (3) installing a frame support; (4) installing pipe channels; (5) pouring concrete; (6) installing a water purifying box; (7) installing a mud adsorption device; and (8) performing trial run of water purification. The construction steps are simple, the dam is protected, the construction efficiency of water purifying device is improved, and the water purifying device is suitable for lakes with different sizes.

The invention discloses a cable-girder combined type bridge and a construction method thereof. The cable-girder combined type bridge comprises a plurality of bridge sections, each bridge section comprises a girder body structure, a pavement layer and a cable structure, the girder body structure comprises a plurality of columns of longitudinal beams, and the cable structure comprises a cable and stay bars. The construction method is characterized in that the bridge is constructed in bridge sections from front to the back along the longitudinal direction of the bridge, construction methods on the bridge sections are the same, and the construction process of each bridge section includes the steps of 1), construction of the first bridge section includes: 101, construction of the girder body structure, 102, mounting of the cable structure, and 103, pavement of the bridge floor; 2), construction of the next bridge section; 3), multiple repeat of the step 2) till all the construction process of the constructed bridge is completed. All the girder structure is under pressure, the cable is under tension, the cross section and self weight of the girder body structure are reduced, bending moment of the girder body structure is reduced, and spanning capability is increased.

The invention discloses a tunnel engineering spray-filming waterproofing construction device and a construction method. The construction device comprises a box body, a base plate, a lifting mechanism, a storing box, a rotating mechanism and spray-filming waterproofing mechanisms. The lifting mechanism and the storing box are both located in the box body, the lifting mechanism comprises a first lifting assembly, a second lifting assembly and a guide mechanism, and an interface assembly is arranged on the top surface of the storing box; a transfer pump is arranged on the interface assembly, the rotating mechanism is located above an end cover, and the spray-filming waterproofing mechanisms are evenly distributed on the side surface of a supporting plate; and the supporting plate is connected to the top surface of a rotary disc through a main support and an auxiliary support, the main support and the auxiliary support are connected through a connecting rod, and a pipeline channel is formed in the supporting plate. The construction method of the tunnel engineering spray-filming waterproofing construction device comprises the steps of tunnel surveying and setting out, tunnel wall surface and arc roof cleaning, drainage layer construction, spray-filming construction and spray-filming waterproofing repairing. According to the construction method, the steps are simple, spray-filming waterproofing construction of tunnels with different sizes can be met, spraying of spray-filming waterproofing materials is even, and the waterproofing effect is good.

The invention discloses a concrete pouring device used for building construction and a construction method of the concrete pouring device for building construction. The concrete pouring device comprises side plates, sealing plates, baffles, a horizontal moving mechanism and a casting compaction mechanism. The sealing plates are fixedly connected to the end portions of the two side plates, and vertical buckling grooves are formed in the inner side faces of the side plates at equal intervals. Each baffle is arranged between the corresponding two adjacent vertical buckling grooves. A strengthening mechanism is arranged on the outer side face of each side plate. The horizontal moving mechanism is located between a first cross beam and a second cross beam. The first cross beam and the second cross beam are connected with the sealing plates and the baffles through first supporting pillars and second supporting pillars. The casting compaction mechanism is connected to the horizontal moving mechanism. The construction method includes the steps of survey setting out, side plate and strengthening mechanism installation, sealing plate and baffle installation, horizontal moving mechanism installation, casting compaction mechanism installation and concrete casting. By means of the construction method, steps are simple, practicability is high, the casting efficiency of concrete is improved,the casting quality is improved, and in addition, the labor intensity of manual operation is greatly reduced.

The invention discloses a date-pit-type composite anti-collision system for a pier and a construction method for the date-pit-type composite anti-collision system for the pier. The composite anti-collision system comprises a prepressing-type anti-collision device which is arranged at the outer side of the pier, and a floating-type external retaining device which sleeves the outer side of the prepressing-type anti-collision device, wherein the floating-type external retaining device is in a date pit shape, and is formed by connecting a plurality of anti-collision boxes which float on the water surface; the prepressing-type anti-collision device comprises one or a plurality of date-pit-type anti-collision structures; each date-pit-type anti-collision structure comprises an external cofferdam, and an energy consumption layer which is arranged at the inner side of the external cofferdam and is composed of a plurality of energy consumption rings; each external cofferdam is in the date pit shape; each energy consumption ring comprises an elastic ring which is formed through prepressing, and an external protective sleeve which sleeves the outer side of the elastic ring. The construction method comprises the following steps of (1) building a horizontal construction platform; (2) conveying parts in place; (3) constructing fixing elements at the outer side of the pier; (4) constructing the prepressing-type anti-collision device; (5) constructing the floating-type external retaining device. The date-pit-type composite anti-collision system for the pier and the construction method for the date-pit-type composite anti-collision system for the pier have the advantages that the design is reasonable, the construction is simple and convenient, the use effect is good, and the pier can be effectively protected.

The invention discloses a construction method of a steel rib column beam-column joint. The construction method comprises the following steps: 1, machining of a steel rib column beam-column joint shaping protection barrel; 2, hoisting of a beam-column frame; 3, mounting of a steel bar truss floor bearing plate, and binding of vertical steel bars; and 4, erecting of a steel rib column formwork, andpouring of concrete. The construction method is simple in steps, convenient to construct and easy to operate, the beam-column joint does not need be supported by a wooden formwork, input labor force and mechanical equipment are less, and the construction effect is good; and after pouring, formwork removing is avoided, the problems of large formwork removing task and more labor force input are solved, and practicality is high.

The invention discloses a stair type landscape retaining wall for an ecological river channel and a construction method of the stair type landscape retaining wall. The stair type landscape retaining wall comprises landscape building blocks, and the landscape building blocks are connected and stacked to form the landscape retaining wall; and every two upper and lower landscape building blocks are fixedly connected through T-shaped positioning steel bars. Each landscape building block comprises a backboard, side plates and a planting plate, and the side plates are symmetrically arranged on the two sides of the front side face of the backboard; and the planting plate is obliquely arranged between the two side plates, and the top face of the planting plate is provided with a planting groove. Every two left-right adjacent landscape building blocks are connected through a first limiting mechanism, and every two up-down adjacent landscape building blocks are connected through a second limiting mechanism. The construction method of the stair type landscape retaining wall includes the steps of river channel measuring lofting, river channel reinforcing, landscape building block machining, landscape building block construction and ecological river channel maintaining. The construction method is simple in step and high in operability, damage to an original ecological river channel is not caused, and the protective effect of the landscape retaining wall is also greatly improved; and meanwhile attractiveness is enhanced.

The invention discloses a seawall anti-wave structure and a construction method thereof. The seawall anti-wave structure comprises anti-wave single bodies, water feeding pipes and recoil pipes; the two anti-wave single bodies adjacent in the left-right direction are fixedly connected through a first limiting mechanism, and the two anti-wave single bodies adjacent in the vertical direction are fixedly connected through a second limiting mechanism; each anti-wave single body comprise a first anti-wave plate and a second anti-wave plate, the first anti-wave plate is fixedly connected to the position below the second anti-wave plate through a connection block, the front side face of the connection block is in a circular arc shape, and the rear side face of the connection block is in an inclined shape; the water feeding pipes are located at the bottom of a seawall face and horizontally and uniformly distributed along the seawall face, and the water feeding pipes and the anti-wave single bodies are connected through the recoil pipes. The construction method of the seawall anti-wave structure comprises the steps of seawall face measurement lofting, seawall face strengthening, pipeline construction, anti-wave single body construction, site clearing and regular inspection. The construction method is simple in step and high in operability, the anti-wave structure is additionally arrangedon the original base of the seawall face, the wave resistance effect of the seawall face is improved, and the safer and more reliable effect is achieved.

The invention discloses a soil retaining structure for ecological bank protection and a construction method thereof. The soil retaining structure comprises a wall, an inclined surface water stop layerand separation plates; the inclined surface water stop layer is fixedly connected to the bottom end of the wall; the separation plates are fixedly connected with the wall and the inclined surface water stop layer at equal intervals; wave breaking plates are uniformly arranged between two adjacent separation plates, and are distributed in a step manner; a seepage box is arranged on the top surfaceof the wall; and a drainage hole is formed in the front side surface of the wall, and is connected with the seepage box through a water transmission pipe. The construction method comprises the stepsof measurement lofting, bank protection surface construction, soil retaining structure construction, water baffle plate disassembly and soil retaining structure maintenance. The soil retaining structure reduces erosion by water currents, realizes wave breakage under the condition of higher water currents, reduces impact on the wall by the water currents, and is convenient to rescue drowning persons; and the construction method is simple in step, and can meet the construction demands of ecological band protection with different lengths; and the constructed soil retaining structure is stable andreliable, and can resist the flood to improve safety.

The invention discloses a side span cast-in-place section construction structure based on a hanging basket and a truss-type guide beam and a construction method. The construction structure comprises the hanging basket, a hanging basket front cross beam, a hanging basket rear cross beam, a truss-type guide beam system, a side formwork system, a pre-ballasting system and a balance weight system; the truss-type guide beam system comprises unit trusses and a bottom formwork arranged above the unit trusses, each unit truss comprises an upper chord member, a lower chord member and a connecting web member, each connecting web member is composed of multiple vertical web members and oblique web members, and one vertical web member is arranged between each two corresponding adjacent oblique web members; the bottom formwork comprises multiple main distribution beams crossing above the unit trusses, a square timber is arranged between each two adjacent main distribution beams, and bamboo plywood is paved above the square timbers and the main distribution beams. Through the construction structure, the technical problems of low safety, high construction difficulty coefficient when encountering poor terrain, long construction period and high construction cost caused by a support method are effectively avoided.

The invention discloses a fabricated steel plate road structure and a construction method thereof. The fabricated steel plate road structure comprises a plurality of road steel plates; a water guide tank is arranged at the bottom of a contact gap between the two adjacent road steel plates, a prefabricated concrete pier is arranged at the lower part of the water guide tank, and steel bars for fixing the corresponding road steel plates are pre-embedded on the prefabricated concrete pier; a drainage channel is formed on each row of concrete prefabricated piers, and an ear plate connecting plate is connected with two adjacent ear plates on the same sides on the two adjacent road steel plates through a bolt. The construction method comprises the following steps: 1, road steel plate prefabrication and ear plate welding; 2, road subgrade construction; 3, steel plate road drainage construction; 4, coarse sand pavement for leveling; 5, prefabricated concrete pier embedment; 6, road steel plate pavement, ear plate fixing and real-time quality acceptance. The fabricated steel plate road structure and the construction method thereof disclosed by the invention have the benefits that the function is complete; through prefabricating the road steel plates, a road subgrade which is matched with the prefabricated road steel plates and has a drainage function is built, and the road steel plates are paved; while the road hardening requirements are met, the use and turnover times of materials are increased.

The invention provides an outer framework of a post-poured belt of a basement exterior wall and a construction method of the outer framework of the post-poured belt of the basement exterior wall. The outer framework is made of steel plates and composed of at least two steel plates which are sequentially jointed from top to bottom. Every two longitudinally-adjacent steel plates are fixed through welding. The steel plates are provided with hoisting holes. The outer framework is fixed through L-shaped bearing bars and linear type embedded bars. Groove treatment is conducted on the steel plates. Every two longitudinally-adjacent steel plates are welded through a groove. The construction method comprises the following installation steps that embedded bars in the post-poured belt of the basement exterior wall are installed and fixed, a wall steel plate outer framework support is set up, a scaffold platform is installed, and the outer framework is hoisted and fixed through hoisting equipment. According to the outer framework of the post-poured belt of the basement exterior wall and the construction method of the outer framework of the post-poured belt of the basement exterior wall, the design is reasonable, the construction procedures are simple, and the construction quality is easy to control; and meanwhile, by the adoption of the construction method, the waterproof construction procedure, the heat preservation construction procedure, the soil body backfilling construction procedure and other construction procedures on the outer side of the post-poured belt of the basement exterior wall are not influenced by the settling time and the construction technology of the post-poured belt of the basement exterior wall, the total construction duration is greatly shortened, the construction cost is reduced, and the project economic benefits are remarkably improved.

The invention discloses an air cushion type layered vacuum tube well. The air cushion type layered vacuum tube well comprises a tube well body; an air cushion type vacuum tube well layered dewatering device is arranged in the middle of the tube well body and comprises an inner ring cover plate and an air cushion ring which is made of rubber materials; four slideways which are arranged in a crossed mode are arranged on the inner ring cover plate; a sliding plate is arrangde on each slideway; a vacuum pump connecting tube hole is upwards connected to a vacuum generating tube; a vacuum meter connecting tube hole is upwards connected to a vacuum meter tube; a cable and sinking pump rope hole is upwards connected to a cable and a sinking pump rope tube; a drainage tube hole is downwards connected to a drainage connecting tube and is upwards connected to a drainage tube; the two sides of the inner ring cover plate are downwards provided with water drain tubes; and the air cushion ring is arranged below the inner ring cover plate. The air cushion type layered vacuum tube well and a soft foundation dewatering and draining method applying the same have the advantages that different dewatering construction can be carried out on different soil, and the double effects of tube well dewatering and vacuum dewatering can be achieved by one tube well.

The invention discloses a point embedded type heat preservation and sound insulation floor and a construction method thereof. The floor comprises a floor basic layer, a first interface layer, a heat preservation and sound insulation net cushion layer, a second interface layer, a light mortar temperature preservation and sound insulation layer and a cement mortar leveling layer in sequence from bottom to top. A plurality of through holes are formed in the heat preservation and sound insulation net cushion layer. A plurality of bulges matched with the through holes and stretching into the through holes are arranged on the light mortar temperature preservation and sound insulation layer. The end faces of the bulges make contact with the first interface layer. The first interface layer is used for bonding the floor basic layer with the heat preservation and sound insulation net cushion layer and the light mortar temperature preservation and sound insulation layer. The second interface layer is used for bonding the heat preservation and sound insulation net cushion layer, the light mortar temperature preservation and sound insulation layer and the cement mortar leveling layer. The point embedded type heat preservation and sound insulation floor can be widely applied to floor temperature preservation and sound insulation engineering of industrial and civil buildings to improve the indoor environments of the buildings, the integrality and crack resistance of the floor are good, safety and reliability are achieved, efficiency is high, energy consumption is low, the construction quality is easy to control, economy and reasonability are achieved, and the national environment-friendly and energy-saving requirement is met.

The invention discloses a shallow-buried large-span rock tunnel portal section weak blasting excavation construction method. A benching tunneling method is adopted for excavating a tunnel portal section of a constructed rock tunnel from the back side to the front side; and during the excavation on the tunnel portal section, the processes comprises 1, upper step excavation and upper part early-stage support construction (during the excavation of an upper part soil body of the tunnel portal section, excavation is performed in a plurality of excavation sections from the back side to the front side, and each excavation section adopts the same excavation method and adopts a mechanical channeling and weak blasting combining method for excavation; during the excavation on any one excavation section, the processes include surveying and setting out, channeling construction by a channeling drilling machine, drilling blasting construction and slag discharge transportation); and 2, lower step excavating and lower part early-stage support construction. The method provided by the invention has the advantages that the steps are simple; the design is reasonable; the investment cost is low; the realization is convenient; the use effect is good; the excavation process of the tunnel port section can be simply, conveniently and fast completed; and the harmful effect of the blasting can be effectively reduced.