39results about How to "Give full play to the resistance to pressure" patented technology

The present invention disclose a steel plate-concrete composite lining which combines support and water proof and belongs to tunnel safe support device range. It can be applied for construction of new tunnel with high force bearing and water proof requirement and the reinforcement of existing structures, and includes a circular cross section tunnel, an arched section tunnel or various section shape tunnels or saps. The lining is generally formed in a way of first forming a lining frame by two anti-cut connection elements melted with studs, a reinforcing steel net banded by reinforcing steels and a steel plate and then spraying concrete into the frame. The invention combines the steel plate, the sprayed concrete to a whole structure to bear force, has improved bearing ability and stability than single reinforcing steel concrete lining, can be as support for new tunnel and as the reinforcement device for similar structure. The invention has the advantages of easy in quality guaranty, simple and quick in construction and high in synthetic effect.

The invention discloses a continuous rigid frame bridge based on a steel truss-concrete slab composite beam. The continuous rigid frame bridge comprises a bridge substructure and the steel truss-concrete slab composite beam supported by the bridge substructure. The steel truss-concrete slab composite beam comprises a steel truss and a concrete bridge deck which is laid over the steel truss. The steel truss comprises one or more steel truss units; each steel truss unit is an inverted-triangle truss girder, wherein the inverted-triangle truss girder is composed of two upper chords, a lower chord, a left line of diagonal web members and a right line of diagonal web members, each upper chord comprises a first horizontal steel plate and a plurality of first vertical perforated steel plates evenly laid on the first horizontal steel plate, an upper chord transverse connecting system connected between the two upper chords comprises a plurality of upper chord transverse connecting pieces, and each upper chord transverse connecting piece comprises a second horizontal steel plate and a plurality of second vertical perforated steel plates evenly laid on the second horizontal steel plate. The continuous rigid frame bridge is simple in structure, reasonable in design, convenient to construct, good in stress performance, good in using effect and capable of effectively solving various problems existing in an existing continuous rigid frame bridge.

The invention relates to an arch combination foundation pit retaining and protection system and a construction method of the arch combination foundation pit and protection system, and provides a combination foundation pit retaining and protection system which is simple in structural style, fast in construction method, capable of sufficiently utilizing property advantages of materials and combining the soil blocking function and waterproof function, and suitable for an arch-shaped cement soil mixing pile large in excavating depth and prefabrication of a high-strength concrete thin-wall steel tube pile, and the construction method of the combination foundation pit retaining and protection system. The arch combination foundation pit retaining and protection system comprises arch-shaped cement soil mixing pile walls (1), high-strength concrete thin-wall steel pipe piles (2), pile top beams (3) and inner supports (4), wherein the high-strength concrete thin-wall steel pipe piles (2) are arranged inside the foundation pit in a scattered mode, the pile top beams (3) connect the high-strength concrete thin-wall steel pipe piles into a whole, each inner support (4) is arranged on the outer side of each high-strength concrete thin-wall steel pipe pile (2), each arch-shaped cement soil mixing pile wall (1) is arranged between two high-strength concrete thin-wall steel pipe pile (2) and the arch-shaped cement soil mixing pile walls (1) to be connected into a whole, and the arch-shaped foundation pit retaining and protection system is formed.

The invention relates to a combination column and combination beam frame with internally-arranged high-strength concrete core columns and a construction method of the combination column and combination beam frame. The special strong combination column and combination beam frame with the internally-arranged core columns is provided with internally-arranged asymmetric steel rib or plastic rib prestressed concrete combination beams and reinforcing bar concrete combination columns with the internally-arranged core columns, the combination beams are horizontally arranged between the combination columns, and the combination beams are connected with the combination columns at intersections through joints. The core columns are formed by pouring longitudinal ribs, stirrups and concrete together, the longitudinal ribs are distributed around the core columns and are wrapped by the stirrups, and the core columns are placed in the reinforcing bar concrete columns. Transverse stiffening ribs are arranged on steel ribs or plastic ribs in the combination beams, the steel ribs or the plastic ribs at the midspan positions are arranged on the lower portions of the combination beams, the steel ribs or the plastic ribs on supports are arranged on the upper portions of the combination beams, and prestressed ribs are arranged in the combined beams in the length direction. The prestressed ribs on the beam and column joints penetrate through two sides of the core columns, and are tensioned and anchored at the ends of the combination columns. The section size of the columns can be obviously reduced, too wide columns are prevented from existing in a system, and the prestressed ribs in the combination beams can generate evenly-distributed counterforce to eliminate part of external loads.

The invention provides an annular plate support foundation pit supporting structure and a construction method thereof, and relates to the technical field of underground engineering. The annular platesupport foundation pit supporting structure comprises a first supporting pile, a second supporting pile, a ring crown beam and an annular plate support; lateral water and soil pressure at the periphery of a foundation pit is transferred to the annular plate support and the ring crown beam through the first supporting pile and the second supporting pile, and is converted to axial pressure of the annular plate support and the ring crown beam, so that the deformation of the foundation pit is controlled, and the pressure resistance of concrete is fully exerted; the shear force and the bending moment in the annular support plate and the ring crown beam are both lower, so that the stress form is more scientific; and the annular plate support and the ring crown beam annularly arranged around thefoundation pit have no need to reserve space for inner supports and stand columns thereof, so that an earthwork excavation working surface and a soil outlet channel of the foundation pit are arrangedon a plane and a vertical surface more easily, and the technical problem of a supporting structure in the prior art incapable of meeting the foundation pit operation demands under soft soil environments is relieved.

The invention discloses a way to design pressing tube of SCS combined hydraulic power station. Between the steel inside and the round wall fill concrete tube, between the concrete tube and the round wall fill the outside steel tube. The outside steel tube is anti-seepage , the middle concrete tube resists external pressure, and the inside steel tube only resists water pressure inside when operating. It decrease by large the content of steel and concrete and the cost, and it is convenient to transfer the water pressure from inside to outside. The way of design brings the good capability of steel and concrete into play, and apt to the work environment very well. Otherwise, in operation there is no need to add other ways, so it increases the speed of the operation by large.

The invention discloses a construction method of a preassembly supporting beam combined system. The construction method includes the following steps of 1, concrete supporting beam prefabrication; 2, concrete supporting beam erection construction; 3, concrete supporting beam joint construction; 4, steel structure inclined strut construction; and 5, second pre-assembly concrete supporting beam and steel structure inclined strut construction according to the steps. An upper support and a lower support are connected through a steel lattice column vertical supporting pile to form the combined supporting system. Concrete supporting beams are preassembled in a factory, construction quality can be guaranteed, the beams can be preassembled in advance according to construction period requirements, and formworks can be used in a circulating manner; and the combined system fully exerts the compressive property of concrete and the tensile property of the steel structure. The concrete supporting beams are assembled and connected together, dismounting is convenient, energy consumption is low, and environmental friendliness is achieved. Steel structure inclined struts are low in steel structure dead weight, high in tensile capacity, rapid to mount and dismount, reusable and free of pollution.

The invention discloses a slope supporting structure and a construction method, and belongs to the technical field of slope prevention and control. The slope supporting structure includes a pluralityof supporting units arranged at intervals. Each supporting unit comprises a vertical pile, an inclined beam and a pile foundation, wherein the two ends of the inclined beam are separately connected with the vertical pile and the pile foundation. The top ends of the adjacent vertical piles are connected through coping beams, and the adjacent pile foundations are connected through foundation beams.The slope supporting structure can effectively support a slope without need for large equipment, so that the problem that the large equipment is difficult to dispose in place or large disturbance is caused to the slope is avoided; compared with single-row or double-row micro piles, the slope supporting structure has the advantages that stress is more reasonable and the deformation resistance is higher; and compared with multi-row micro piles, the slope supporting structure has the advantages that the construction period is short and the cost is low.

The invention discloses a rhombus multi-cavity steel plate-concrete composite beam, and belongs to the field of constructional engineering. The rhombus multi-cavity steel plate-concrete composite beamcomprises a multi-cavity space steel beam and concrete; the concrete is poured into the rhombus multi-cavity steel beam to form a combined integral component; the rhombus multi-cavity steel beam is composed of a steel plate shell and steel plate cavities with notches; the steel plate is composed of five steel plates in a welding mode; the steel plate cavities with the notches are connected in aninserted mode up and down and welded in the steel plate shell to form a rhombus multi-cavity steel beam; and the concrete is poured into the steel beam to form the rhombus multi-cavity steel plate-concrete composite beam. The rhombus multi-cavity steel plate-concrete composite beam has the beneficial effects that the problems of liable cracking and exposure cracking of traditional concrete components can be solved, the steel plate cavities have a high lateral restraining effect on the concrete, the compressive property of the concrete can be fully played, the self weight is light, the composite beam after molding has better overall performance, the steel plate shell replaces steel bars and structural steels in the traditional floor slab to play the role of the template, the construction operation of traditional form erecting and form stripping is avoided, the rhombus multi-cavity steel plate-concrete composite beam can replace a traditional template in the construction site, the construction progress is increased, and the economic benefit is improved.

The invention relates to a deployable mechanism shock absorber based on two-rod tensioning integral, comprising a first stretching mechanism and a second stretching mechanism with the same structure, parallel and arranged with a certain interval, both of which include a first connecting rod and a second connecting rod. rod and tension spring; both ends of the tension spring are respectively connected to the close ends of the first connecting rod and the second connecting rod; the ends of the first connecting rod and the second connecting rod far from the tension spring are fixed with fixing blocks; The middle of the long diagonal rods is arranged in a cross-hinged manner, and a middle hinge point is formed in the middle. The two ends of each long diagonal rod are hinged to the first connecting rod or the second connecting rod in the first stretching mechanism and the second stretching mechanism. The corresponding fixed block One end of the two short inclined rods is hinged to form a floating hinge point, and the other end is hinged to two fixed blocks corresponding to the same side of the first stretching mechanism and the second stretching mechanism respectively. The invention realizes a large change in rigidity through small deformation, combines the tensioning mechanism with the expandable, high stability and good shock absorption effect.

The present invention disclose a steel plate-concrete composite lining which combines support and water proof and belongs to tunnel safe support device range. It can be applied for construction of new tunnel with high force bearing and water proof requirement and the reinforcement of existing structures, and includes a circular cross section tunnel, an arched section tunnel or various section shape tunnels or saps. The lining is generally formed in a way of first forming a lining frame by two anti-cut connection elements melted with studs, a reinforcing steel net banded by reinforcing steels and a steel plate and then spraying concrete into the frame. The invention combines the steel plate, the sprayed concrete to a whole structure to bear force, has improved bearing ability and stability than single reinforcing steel concrete lining, can be as support for new tunnel and as the reinforcement device for similar structure. The invention has the advantages of easy in quality guaranty, simple and quick in construction and high in synthetic effect.

The invention relates to a special strong combination column and combination beam frame with internally-arranged core columns and a construction method of the special strong combination column and combination beam frame. The special strong combination column and combination beam frame with the internally-arranged core columns is provided with internally-arranged asymmetric steel rib or plastic rib prestressed concrete combination beams and reinforcing bar concrete combination columns with the internally-arranged core columns, the combination beams are horizontally arranged between the combination columns, and the combination beams are connected with the combination columns at intersections through joints. The core columns are formed by pouring steel ribs or plastic ribs and concrete together, longitudinal ribs are distributed around the core columns and are wrapped by stirrups, and the core columns are placed in the reinforcing bar concrete columns. Transverse stiffening ribs are arranged on the steel ribs or the plastic ribs in the combination beams, the steel ribs or the plastic ribs at the midspan positions are arranged on the lower portions of the combination beams, the steel ribs or the plastic ribs on supports are arranged on the upper portions of the combination beams, and prestressed ribs are arranged in the combined beams in the length direction. The prestressed ribs on the beam and column joints penetrate through two sides of the core columns, and are tensioned and anchored at the ends of the combination columns. The axial pressure performance of the columns can be improved, the section size of the combination columns is small, the core columns can be poured on the scene and can also be prefabricated in factories, field mounting is achieved, workloads are reduced, and the construction period is shortened.

The invention discloses a cable-stayed bridge steel-mixed composite cable girder anchorage structure, which comprises a rectangular steel pipe, a stiffener assembly arranged in the rectangular steel pipe, a concrete structure formed by pouring concrete filled in the rectangular steel pipe, and a rectangular steel pipe arranged in the rectangular steel pipe. The anchor plate on the top, rectangular steel pipes, stiffener components and concrete structure constitute the stiffened CFST members; the rectangular steel pipes are arranged along the longitudinal bridge direction, and the rectangular steel pipes are spliced ​​by the top plate, bottom plate and two side plates, and the stiffener components include multiple An upper opening stiffener fixed on the bottom of the top plate from left to right and a plurality of lower opening stiffeners fixed on the top of the bottom plate from left to right. The invention is simple in structure, reasonable in design, convenient in construction, and good in use effect. It combines the rectangular steel tube concrete structure with opening stiffeners and the traditional anchor plate, under the premise of ensuring reasonable force and reliable force transmission. The pressure-bearing requirement of the horizontal force component of the stay cable is also conducive to improving the fatigue performance of the anchorage part of the cable beam.

The invention relates to a composite column composite beam frame with a built-in high-strength concrete core column and a construction method thereof, wherein the composite column composite beam frame with a built-in core column of different strength has a built-in asymmetrical steel bone or plastic bone prestressed concrete composite beam, The reinforced concrete composite column with built-in core column, the composite beam is horizontally arranged between the composite columns, and the two are connected by nodes at the intersection; the core column is formed by pouring longitudinal bars, stirrups, and concrete together, and the longitudinal bars are distributed in the core column The stirrups are wrapped around the longitudinal reinforcement, and the core column is placed in the reinforced concrete column; the steel frame or plastic frame in the composite beam is provided with transverse stiffeners, the steel frame or plastic frame at the mid-span is located at the lower part of the composite beam, and the steel frame at the support The bone or plastic bone is located on the upper part of the composite beam, and the prestressed tendons are arranged in the composite beam along the length direction; the prestressed tendons pass through both sides of the core column at the beam-column node, and are tensioned and anchored at the end of the composite column. The invention can obviously reduce the cross-sectional size of the column, and avoid excessive fat columns in the system; the prestressed tendon in the composite beam can generate uniformly distributed reaction force to offset part of the external load.

The invention relates to an assembly type FRP (fiber reinforce plastic) reinforcing bar seawater marine sand concrete-UHPC (ultra high performance concrete) superposed beam bridge structure, which comprises a T-type beam bridge upper part flange component prepared by adopting UHPC, an FRP reinforcing bar seawater marine sand concrete T-type beam bridge web component and a transverse bridge direction prestressing force FRP pull rod system; the T-type beam bridge upper part flange component prepared by adopting the UHPC comprises a pre-buried top plate reinforcing mesh, a reserved transverse ribpenetrating pore channel and multiple anti-shearing steel bars, and a transverse bridge direction prestressing force FRP pull rod is penetrated in the reserved transverse rib penetrating pore channel; the FRP reinforcing bar seawater marine sand concrete T-type beam bridge web component comprises multiple corrugated pipes which are uniformly distributed, the corrugated pipes are communicated witha grouting material inlet and a grouting material outlet, and the anti-shearing steel bars match with the corrugated pipes; the bottom of the web component is provided with a prestressing force FRP rib, the middle is provided with an FRP wrapping steel pipe, the web component is provided with a diaphragm plate in the beam bridge span direction, and the FRP rib is arranged in the diaphragm plate.The assembly type FRP reinforcing bar seawater marine sand concrete-UHPC superposed beam bridge structure uses local materials, seawater and marine sand are used for preparing concrete, the material transportation cost is reduced, and the problem of constructing a highly durable structure rapidly in a marine environment is solved.

The invention discloses a continuous rigid frame bridge based on a steel truss-concrete slab composite beam. The continuous rigid frame bridge comprises a bridge substructure and the steel truss-concrete slab composite beam supported by the bridge substructure. The steel truss-concrete slab composite beam comprises a steel truss and a concrete bridge deck which is laid over the steel truss. The steel truss comprises one or more steel truss units; each steel truss unit is an inverted-triangle truss girder, wherein the inverted-triangle truss girder is composed of two upper chords, a lower chord, a left line of diagonal web members and a right line of diagonal web members, each upper chord comprises a first horizontal steel plate and a plurality of first vertical perforated steel plates evenly laid on the first horizontal steel plate, an upper chord transverse connecting system connected between the two upper chords comprises a plurality of upper chord transverse connecting pieces, and each upper chord transverse connecting piece comprises a second horizontal steel plate and a plurality of second vertical perforated steel plates evenly laid on the second horizontal steel plate. The continuous rigid frame bridge is simple in structure, reasonable in design, convenient to construct, good in stress performance, good in using effect and capable of effectively solving various problems existing in an existing continuous rigid frame bridge.