510results about How to "Construction quality is easy to control" patented technology

The invention relates to a three-dimensionally adjustable disconnectable curtain wall connecting device. In the three-dimensionally adjustable disconnectable curtain wall connecting device, the section of a back pendant has a chair shape; a back bolt hole is formed at the back of the chair and is in threaded connection with an embedded nut at the back of each curtain wall plate through a back bolt; the back chair legs have L shapes and are propped against the back of each curtain wall plate; a jackscrew bolt hole is formed on the chair surface and is connected with an adjustable supporting piece of which the upper end is embedded between the front and back chair legs through a jackscrew bolt; the adjustable supporting piece is formed by connecting a supporting plate, a vertical plate and an adjusting plate to be a whole; the supporting plate is in top contact connection with the jackscrew bolt; the thread height of the jackscrew bolt is more than the longitudinally adjusting distance of each curtain wall plate; and a long round hole vertical to the wall body is formed on the adjusting plate. The device solves the problems that the position of each curtain wall plate cannot be adjusted, the plate gaps are different in sizes, the curtain wall plates are staggered with one another and the like so as to guarantee the appearance of the curtain wall and overcomes the defect that the installation of the traditional curtain wall plates completely depends on the control level and the vertical deflection of keels at the same time, so that the construction quality can be controlled easily.

The invention relates to the technical field for the engineering of large-section tunnel, in particular to an engineering method for the double lateral tunnel of a three-arc tunnel on soft and weak geological condition, which resolves the problem of longer duration for the exposure of wall rock, easy deformation of tunnel and poor waterproof effect in existing tunnel engineering method. The invention comprises: (1) excavation of lateral tunnel; (2) lining of later tunnel: first of all, dismantle the primary support of the whole section, then pour the arc invert secondary lining and arc section secondary lining with the construction joint being configured at the lower section of the middle wall for the lateral tunnel; (3) after the circular lining a left lateral tunnel I and a right lateral tunnel II on a same section, excavate and line a middle tunnel III. This method realizes simple equipment and convenient engineering; with the construction sequence of building the lateral tunnel and then the middle tunnel, the invention gives full play to the supporting function of the secondary lining of the middle wall, so as to reduce the load borne by the primary support of the arc section of middle tunnel and elevate the safety coefficient; the invention reduces the settlement and impact on peripheral environment, so as to ensure the stability and safety of the excavation working face; small number of construction joint and high working efficiency.

The invention relates to the tunnel construction field, in particular to a construction method for dealing with tunnel collapses to solve the existing problems such as high security risks, construction difficulty and failures to guarantee the construction quality. To achieve such purposes, the construction method comprises the following steps: solidifying the preliminary bracing of the adjourning landslides with temporary umbrella arches, and sealing off the collapse surface with spraying concrete after the collapsed cave is stabilized. The method also requires building of a working platform with ruins in the cave, and laying of sand bags on the platform to form an arch-shaped solid membrane. A concrete solidified ring is built by infusing concrete through the reserved pipeline. On top of the concrete solidified ring, a buffer ring is formed by infusing the solidified ring with sands and fly ash mixture, then the supporting system of the cave is constructed when the required strength of the concrete solidified ring is met. With the construction method, the security of the construction can be guaranteed with no quality or security risk to the collapsed section. The materials required in the method are easily available and cheap. Compared with the traditional construction methods, the new construction method can save up to 30 percent of material cost, 50 percent of risk charges, and 20 percent of labor expense for each linear meter of similar collapsed tunnels. The method of invention is efficient, safe, economical and risk-free.

The invention discloses a correcting method for high speed railway ballastless track subgrade in a soft soil area. The correcting method comprises the following steps that 1, when the lateral displacement of the high speed railway embankment occurs , a deformation groove and a plurality of stress relief apertures are formed in an asymmetrical load region, the deformation groove is filled with rigid foam, and the stress relief apertures are filled with grits and rubbles; 2, a first row jet-grouting pile is arranged in a second soft stratum area, the instantaneous injection pressure generated by the construction of the first row jet-grouting pile is utilized to drive a pile foundation reinforcement area located at the bottom of the high speed railway embankment to conduct the displacement from the second soft stratum area to a first soft stratum area, the pile foundation reinforcement area drives a subgrade reinforcement bed course located above the pile foundation reinforcement area and the high speed railway embankment to move simultaneously, and the correcting for the high speed railway subgrade is achieved; 3, the deformation groove is densely filled with the rubbles plus 5% of cement. An acting force is applied on subgrade deeps, the subgrade drives the subgrade body to conduct a movement, so that the purpose of correcting the lateral displacement of the subgrade is achieved.

The invention discloses a soft rock tunnel deformation control method based on anchor rod force analysis. A soft rock tunnel is excavated and subjected to deformation control construction from back to front according to multiple segments, and when any segment is excavated and subjected to deformation control construction, the method includes the steps that 1, surrounding rock basic mechanical parameters are determined; 2, the tunnel reserved excavated volume is determined; 3, the tunnel is excavated; 4, a tunnel preliminary bracing structure is determined; 5, tunnel deformation control construction is carried out, wherein in the tunnel preliminary bracing construction process, a flexible mold bracing structure is constructed from back to front; 6, a next segment is excavated and subjected to deformation control construction; 7, the step 6 is repeated multiple times till the full excavation and deformation control construction process of the soft rock tunnel is completed. The soft rock tunnel deformation control method is reasonable in design, convenient to achieve and good in use effect, the reserved excavated volume is determined according to the surrounding rock deformation condition of the soft rock tunnel, the flexible mold bracing structure is adopted for carrying out full-section bracing on the tunnel, the flexible mold bracing structure and the tunnel preliminary bracing structure are in coordination deformation, and deformation of the soft rock tunnel can be effectively controlled.

Supported bundling insulated composite wall, relates to outer insulated composite wall for buildings. The purpose of this invention is to solve the problem that existing blocks have their heat bridge, great impact the energy-saving of construction and can not reach the low heat transfer coefficient of the wall. The inner terminal of concrete cantilever strutting piece (2), the level connecting link (7) and plastic bulging nails (9) of the invention are fixed within the concrete structure of the main building (10) or basal wall (1), the outer terminal of concrete cantilever strutting piece (2) and the level connecting link (7) are connecting fixed with vertical steel bars (5) in the outer protective layer, an insulating layer (3) is fixed outer flank of basal wall (1) by plastic bulging nails (9)outer flank of insulating layer (3) is the vertical steel bars (5), out or inside of the bars is set with metal network (4), the outer ends of metal network (4), the vertical bars (5) and the plastic bulging nails (9) are fixed together, the protective layer (8) built by cement mortar or pisolith concrete is found outside the insulation layer (3).the present invention is safe, durable ,with good heat-insulating and fire resisting properties.

The invention provides an asymmetrical casting construction method of a side span of a rigid frame bridge with extra high piers and a long span length. The asymmetrical casting construction method comprises the following steps that after each T-shaped structure of each main pier is symmetrically cast to have largest cantilevered ends in a suspended manner, a hanging basket on one side of the side span of each main pier is continuously moved forward, and an asymmetrical suspended casting segment is cast on the side of the side span in a suspended manner; when the asymmetrical suspended casting segments are constructed, cantilever brackets for 0# block construction of transition piers are directly adopted as side span cast-in-place brackets for constructing side span cast-in-place segments; after the casting of the side span cast-in-place segments is completed, the hanging baskets for constructing the asymmetrical suspended casting segments are put down and moved forward, front cross beams of bottom baskets of the hanging baskets are placed on the side span cast-in-place brackets, rear cross beams of the bottom baskets of the hanging baskets are suspended and hung on baseplates and flange plates of tank beams to be used as side span closing hanging baskets, and the casting construction of side span closing segments is performed; after the side span closing segments meet design requirements, the side span closing hanging baskets are detached, and the side span construction is completed.

The invention discloses a template for construction, which comprises groove-shaped modules (1), and bolts or pins (2). The template for construction is spliced by a plurality of mutually connected groove shaped modules (1) through the bolts or pins (2), wherein a connecting block (3) arranged at a corner of the template has an L-shaped or groove-shaped section; the connecting blocks (3) are arranged at internal corners and external corners of the template for construction, have strong rigidity, can connect the templates in different directions into a whole; and the L-shaped and groove-shaped connecting blocks (3) arranged at the internal corners of the template can plug gaps on the end parts of the groove-shaped modules (1) to prevent concrete from flowing out. The template for construction is easy to manufacture and convenient to assemble and disassemble, has high rigidity, high bearing capacity and long service life, and can be used in construction of concrete uprights, shear walls and beams; and the connecting blocks (3) can be used for connecting corners of an upright template, a shear wall template and a beam template.

The invention discloses an excavation and preliminary bracing method for a soft rock tunnel. The excavation and preliminary bracing construction for the soft rock tunnel are performed in sections from back to front. When any section is subjected to excavation and preliminary bracing construction, the method comprises the following steps: 1) confirming basic mechanical parameters of the surrounding rock; 2) confirming the reserved excavated volume of the tunnel: confirming the reserved excavated volume of the currently constructed section according to a theoretical value of inward displacement of the surrounding rock of the soft rock tunnel after being braced; 3) excavating the tunnel; 4) confirming a preliminary bracing structure of the tunnel; 5) constructing the preliminary bracing of the tunnel; 6) performing the excavation and preliminary bracing construction of the next section; and 7) repeating the step 6) till all the processes of the excavation and preliminary bracing construction of the soft rock tunnel are completed. The method disclosed by the invention has the advantages of simple steps, reasonable design, convenience in realization and good use effect; the reserved excavated volume is confirmed according to the surrounding rock deformation condition of the soft rock tunnel; and the steel bracket and the anchoring net sprayed preliminary bracing structure are coordinated for performing all-section preliminary bracing on the tunnel.

The invention discloses a prefabricated reinforced concrete column with a high-performance concrete frame, which adopts a thought of partially prefabricating and partially casting in situ, and is composed of a prefabricated part and a cast-in-situ part. The prefabricated reinforced concrete column with the high-performance concrete frame comprises a prefabricated high-performance concrete hollow column, longitudinal bars arranged in the prefabricated high-performance concrete hollow column along the length direction of the column, reinforcing steel bars and stirrups which are equidistantly paved on the cross section of the prefabricated high-performance concrete hollow column, the reinforcing steel bars crossing the central cavity of the prefabricated high-performance concrete hollow column, and the end heads of the reinforcing steel bars connected to the inner sides of the stirrups, and cast-in-situ common concrete filled in the central cavity of the prefabricated high-performance concrete hollow column. The invention further provides a construction method of the prefabricated reinforced concrete column, the prefabricated high-performance concrete hollow column is capable of generating an annular constraining force on the cast-in-situ common concrete, and thus improving the bearing capacity of the prefabricated reinforced concrete column, improving the overall performance and anti-seismic property of the structure, improving the deformation capacity of the member during transport and hoisting processes, and achieving comprehensive improvement and enhancement of the stress performance and the user performance of the prefabricated reinforced concrete member.

The invention discloses a super large area planting roof structure and a construction method thereof. The construction method includes the following steps of (1) roof structure layer processing, (2) roof structure separate warehouse and additional layer construction, (3) composite waterproof layer construction, (4) insulating layer construction, (5) roof structure exhaust system construction, (6) slope asking layer construction, (7) ordinary coiled material waterproof layer construction, (8) root resistance puncturing separating root waterproof layer construction, (9) asphalt felt isolating layer construction, (10) rigidity protecting layer construction, (11) drainage ditch barricade construction, (12) water drainage and impounding layer construction, (13) drainage system construction, (14) filtering layer construction, (15) planting dielectric layer construction, and (16) vegetation layer construction. The great effects on the heat preservation, heat insulation, water proof and virescence of the super large area planting roof structure are achieved, the technology is simple, the operation is easy, the construction quality is great, and the economic benefits and the social benefits are huge.

The invention discloses a single-layer space lattice structure assembled double-ring node, which mainly comprises five parts including center upper and lower node rings, I-shaped connecting elements, a large sealing plate, a small sealing plate, high-strength screw bolts, major rod elements and minor rod elements, wherein the center upper and lower node rings are provided with screw bolt holes; the wing edge parts of the I-shaped connecting elements are provided with screw bolt holes; the large sealing plate and the small sealing plate are rectangular steel plates; the large sealing plate is welded with the I-shaped connecting elements; the small sealing plate is provided with screw bolt holes, and is welded with the rod ends of the minor rod elements; the high-strength screw bolts are connected with the upper and lower node rings and the I-shaped connecting elements; the upper node ring and the small sealing plate are connected; the major rod elements and the minor rod elements are rectangular steel pipes. The node rings can be only connected with the major rod elements and can be connected with both the major rod elements and the minor rod elements; a certain angle can be formed between the node rings and the rod elements. The node provided by the invention can be applicable to a single-layer space lattice structure, and has the characteristics that the mechanical property is good; the assembling performance is high; the construction speed is high; the construction quality can be easily controlled; the construction cost is low, and the like.

The invention relates to a maintenance structure for a foundation pit next to an existing building. The maintenance structure is characterized by mainly comprising a cement mixing pile water stop curtain, a cast-in-situ bored pile support pile, non-soil-squeezing anti-overturning piles and a slant pull rod, wherein the cast-in-situ bored pile support pile, the cement mixing pile water stop curtain and the non-soil-squeezing anti-overturning piles are sequentially arranged on the outer side of a foundation pit excavation side boundary from inside to outside; a raft plate is arranged in a pile body top area from the non-soil-squeezing anti-overturning piles to the cast-in-situ bored pile support pile, and a continuous perforated steel plate is arranged on the top of the raft plate; the upper portion of the slant pull rod is arranged on the continuous perforated steel plate on the tops of the non-soil-squeezing anti-overturning piles, the lower portion of the slant pull rod is arranged on the outer side of the cast-in-situ bored pile support pile, and the two ends of the slant pull rod are each fixed with an anchorage device, a base plate and a pedestal. The foundation pit maintenance structure effectively solves the technical problem that the foundation pit next to the existing building is hard to support, and has good technical and economical benefits.

The invention discloses a construction device and the construction technology of a concrete pile foundation, which is applied to the construction of the foundation project of the bored concrete pile in the building field. The device comprises a top pressure type static pile pressing-in machine, a hydraulic cylinder connected with a pressure gauge a retaining cylinder connected with the top pressure type static pile pressing-in machine and an internal tube, the length of the internal tube is longer than that of the retaining cylinder; a flat head blanking plug is arranged at the lower end of the internal tube; a vibration device is arranged on the retaining cylinder and a feed inlet is opened on the side wall of the retaining cylinder. The key points of the construction technology are that: the builders rubbish is utilized to form a loose bearing platform at the bottom of the pile end, then the no-slump concrete is used for building a solid bearing platform on the loose bearing platform at the bottom of the pile end; a plurality of middle bosses are formed at the different heights of the pile; then the file is finished by lifting the internal tube, placing a reinforcing cage, casting and vibrating the concrete. The pile made according to the invention has high and uniform carrying capacity; the carrying capacity of the bearing platform can be read from a pressure gauge, which reduces the artificial error.

The invention provides a double-side-wall composite cross method construction method for a large-span tunnel under the complex geological condition. The double-side-wall composite cross method construction method is used for solving the technical problems that during construction of a soft rock large-span tunnel, arch crown settlement is not easy to control and a support structure is prone to deforming, optimizing structural force, improving construction convenience and determining construction safety. According to the double-side-wall composite cross method construction method, pilot tunnelson the two sides are constructed firstly, and primary support side wall foundations are constructed in the pilot tunnels to serve as a bearing foundation of an upper primary support system, so that the problems that during construction of the soft rock large-span tunnel, arch crown settlement is not easy to control and the support structure is prone to deforming are solved; bases only serve as thebearing foundation of primary support, under the premise that the stability of the arch wall primary support system is guaranteed, an arch wall secondary lining can still be constructed through an integral formwork trolley, the technique is simple and convenient, the integrity of the secondary lining is guaranteed, the waterproof effect is good, and the construction quality is controllable; and the pilot tunnels on the two sides adopt the excavated section of an arc-shaped arch crown, compared with conventional pilot tunnels constructed through a double-side-wall heading method, the structureforce is more excellent, construction is convenient, and the construction quality of the support system is easy to ensure.

The invention discloses a wooden structure house and a building process thereof. The wooden structure house comprises a house main body structure and a roof structure, wherein every floor of the house main body structure comprises a plurality of wall bodies 1; the adjacent floors are separated by a floor plate; the wall bodies 1 and the floor plate are an integrated composite board or are formed by splicing a plurality of composite boards arranged on the same plane; the integrated composite board is formed by piling a plurality of layers of wooden boards with same shapes and sizes; and the wooden board is formed by splicing a plurality of wooden plate strips which are arranged on the same plane. The building process comprises the following steps of: 1, on-site constructing foundation and basement, factory-prefabricating and transporting the integrated composite boards; and 2, using the prefabricated composite boards to assemble the wooden structure house on the spot. The wooden structure house in the invention is simple in construction process, controllable in construction quality, low in input investment, rational in structural stress of the built house, beautiful in shape, wide in application range and convenient for prefabricating the integrated boards and suspending on the spot.

The invention discloses a short-distance coal seam roadway excavating and supporting method. The method comprises steps as follows: 1, basic mechanical parameters of surrounding rock are determined; 2, reserved excavated volumes of two sides of a roadway are determined; 3, the roadway is excavated; 4, a roadway side supporting structure is determined and comprises roadway supporting units and grouted rock bolts which are arranged in a staggered manner, and the roadway supporting units comprise top plate supporting systems, bottom plate supporting systems and roadway side supporting systems; and the limit caving arch rise is determined; 5, the roadway supporting structure is determined; 6, roadway surrounding rock supporting construction is performed; 7, excavation of the next section and roadway surrounding rock supporting construction are performed; 8, the step 7 is repeated multiple times, and the short-distance coal seam roadway construction process is completed. The method is simple, reasonable in design, convenient to realize and good in use effect, the reserved excavated volumes of the two sides of the roadway are determined respectively according to surrounding rock deformation conditions of the short-distance lower coal seam roadway, and whole section supporting is performed on the roadway through combination of the grouted rock bolts with the roadway supporting units.