101results about How to "Increase ultimate bearing capacity" patented technology

The invention discloses a steel plate and steel reinforced concrete well wall, which is mostly suitable for deep vertical shafts for bearing high ground pressure and high water pressure. A steel plate cylinder, an annular steel rib, inside vertical steel ribs, outside vertical steel ribs and radial connecting pieces are arranged and concrete is poured to form a cylindrical well wall. The steel plate cylinder and the annular steel rib are respectively positioned on the inner surface of the well wall and in the well wall, and are respectively fixed to the inside and outside vertical steel ribs; the steel plate cylinder and the annular steel rib are connected through the radial connecting pieces to form a spatial structure; and concrete is poured into an annular space formed by the steel plate cylinder and a well wall template or surrounding rock to coat the annular steel rib, the inside and outside vertical steel ribs and the like, and the cylindrical well wall structure is formed. The steel ratio on the inner side of the well wall is high, the concrete between the steel plate cylinder and the annular steel rib is positioned in a three-directional stress state, the compressive strength can be obviously improved, a core bearing area is formed, and the ultimate bearing capacity of the well wall is greatly improved. The steel plate and steel reinforced concrete well wall is used for building deep vertical shafts, the thickness of the well wall can be greatly reduced and the cost is reduced; and the steel plate and steel reinforced concrete well wall is reasonable in structure and easy and convenient to construct and has wide applicability.

The invention discloses an outer casing pipe constraint folding steel plate energy consumption support. The support comprises an outer casing pipe, a core barrel arranged in the outer casing pipe, end bearing plates arranged at barrel openings of the two sides of the core barrel and outer casing pipe seal plates arranged at the ends of the two side of the outer casing pipe; the end bearing plates are connected with cross-shaped node plates penetrating through the outer casing pipe seal plates, and the core barrel is formed by sequentially connecting multiple energy consumption units. The support reduces earthquake responses of buildings through the good post-yielding energy consumption capacity, is easy to manufacture and convenient to install and can be applied to structural earthquake resisting and effectively reduce earthquake disasters.

The invention discloses high-ductility fiber concrete and a construction method for reinforcing a beam by using the high-ductility fiber concrete. The concrete is prepared from cement, coal ash, limestone powder, water, common riversand, a water reducing agent and PVA fibers. The construction method comprises the following steps: chiseling away a bottom reinforcement protective cover of an original concrete beam to enable load-bearing rebars to be exposed, welding added load-bearing main rebars to original load-bearing main rebars through short rebars, and then pouring the high-ductility fiber concrete to the surface. The construction method aims to solve the problem that the existing reinforcement construction technological method is low in operability. By the use of the mechanical property of the high-ductility fiber concrete as well as high joint work performance and integrality of an added structure and an original structure which are reinforced, the bearing capacity of the original concrete beam can be substantially improved; the reinforcement process is simple, the construction is convenient and quick, and the added section is relatively small in size; the high-ductility fiber concrete is safe in structure and relatively high in applicability.

The invention discloses a method for additionally anchoring a reinforced concrete beam strengthened with an FRP cloth material in an anti-bending way, which belongs to the technical field of structural engineering. In the method, an internally-locking anchoring system is formed by opening a groove on the bottom surface of the reinforced concrete beam and embedding the FRP cloth material into the groove. The method comprises the following steps: opening the groove on the bottom surface of the reinforced concrete beam according to a required size and clearing groove dust; pre-treating the bottom surface of the reinforced concrete beam, grinding the bottom surface smoothly and grinding corners of the bottom surface into smooth chamfer angles; cutting the FRP cloth material as required, painting primers on the bottom surface of the reinforced concrete beam and in the groove and treating unsmooth parts by flattening glue; pasting two layers of unidirectional FRP cloth materials on the end parts of the bottom surface of the beam respectively, and then painting surface glue; and embedding the FRP cloth material on the bottom surface of the reinforced concrete beam and filling the groove with the surface glue so as to form the internally-locking anchoring system. The method is suitable for additionally anchoring the reinforced concrete beam strengthened with the FRP cloth material in the anti-bending way.

The present invention discloses one kind of heavy load composite pile comprising one pile core of high strength pre-stressed concrete pipe and one outer layer pile of plain concrete coating the pile core and its construction process. The construction process includes the following steps: 1. long auger boring and pump pressurizing concrete to form the in-situ deposited plain concrete pile; and 2. hoisting the high strength pre-stressed concrete pipe pile and inserting or pressurizing into the center of the plain concrete pile until reaching the designed depth. The composite pile has the vertical load borne by the high strength pre-stressed concrete pipe pile and the plain concrete pile, the side friction force increased by the plain concrete pile with relatively great cross section. It has great limit bearing capacity from the high strength pre-stressed concrete pipe pile.

The invention provides basalt and polypropylene hybrid fiber reinforced concrete and a preparing method. Basalt fibers accounting for 0.1-0.5 part of the weight of a concrete matrix and polypropylene fibers accounting for 0.01-0.08 part of the weight of the concrete matrix are doped into the concrete matrix. (1) at the normal temperature, sand and stone are put into a blender to be blended for 60 s; (2) cement is put into the blender to be blended for 60 s; (3) water is added into the blender to be blended for 90 s to 120 s, and a concrete matrix is obtained; and (4) two kinds of fibers including the basalt fibers and the polypropylene fibers are mixed, and are scattered into the concrete matrix obtained in the step (3) to be blended for 120 s after the two kinds of fibers are highly scattered, and then the basalt and polypropylene hybrid fiber reinforced concrete is obtained. Compared with traditional concrete, the basalt and polypropylene hybrid fiber reinforced concrete can better adapt to complex environments such as high temperature, high heat, corrosion and the like, can be widely applied to roads, bridges, buildings, undergrounds and oceanographic engineering, and the concrete application scope is greatly expanded.

The invention relates to a prefabricated combined beam and column node member. The prefabricated combined beam and column node member comprises a cross beam and a vertical column which are intersected, wherein the cross beam as well as the vertical column comprises an ECC (engineered cementitious composite) material, longitudinal bars and stirrups, and a rectangular region where the cross beam and the vertical column are intersected and superposed is in the transverse width of A and the longitudinal height of B; the cross beam is in the transverse width of 2B plus A and the longitudinal height of B, and the longitudinal bars penetrate the full length of the cross beam and extend out of two beam ends by 10cm-15cm; and the vertical column in the longitudinal height of 2A plus B, and the longitudinal bars penetrate the full length of the vertical column and extend out of the two column ends by 10cm-15cm. The prefabricated combined beam and column node member disclosed by the invention is the prefabricated member which is formed by casting the steel bar-reinforced ECC material and is applied to an anti-seismic key part, in particular to a key node. Compared with an ordinary reinforced concrete member, the prefabricated combined beam and column node member can significantly improve the ductility and the anti-seismic performance of the structure, greatly reduce the use of the stirrups at the node under the condition of meeting the anti-seismic requirement and solve the difficult problem in construction caused by too dense stirrups in a node region.

The invention relates to a star-section reinforced concrete combination column with reinforced with external angle steel. The star-section reinforced concrete combination column with reinforced with external angle steel comprises external angle steel, bolt connecting parts, longitudinal ribs, stirrups and concrete, wherein the stirrups are bent to be a cross shape; the external angle steel is arranged at the turning corner where two branches of the cross intersect with each other; two adjacent pieces of external angle steel are connected through the bolt connecting parts; the external angle steel is fixed with a bottom plate in a welded manner or through the bolt connecting parts; the concrete is arranged inside a cross fence formed by the bent stirrups; the longitudinal ribs are arranged on the corners. Due to the adoption of the external angle steel, the situation that the stress is centralized at two adjacent corners is changed, the external angle steel and the star-section reinforced concrete combination column are connected together through bolts and stressed and deformed together, and the star-section reinforced concrete combination column is a main component of a frame structure in a high-rise and large-span building, and has the advantages that the bearing property is high, the rigidity is high, the weight is light, the plasticity and the toughness are good, the impact resistance and the anti-fatigue property are good, the anti-shaking property is good, and the durability is good.

The invention discloses an assembling prestress orthogonal laminated wood shear wall. The assembling prestress orthogonal laminated wood shear wall comprises bond-free prestress bars, bearing beams, CLT wall plates, slab supporting frames and limiting steel components. The two limiting steel components are connected with a base. The CLT wall plates on the lower layer tightly abut against the basethrough the bond-free prestress bars. The bearing beams on the lower layer are connected with the CLT wall plates on the lower layer. The slab supporting frames on the lower layer are connected with the CLT wall plates on the lower layer and then put on the top of the bearing beams on the lower layer. The CLT wall plates on the upper layer are connected with the two slab supporting frames on the lower layer. The bearing beams on the upper layer are connected with the CLT wall plates on the upper layer. The two bond-free prestress bars penetrate through the CLT wall plates on the upper layer and the lower layer. The CLT shear wall has high initial rigidity, high ultimate bearing capacity and a certain self-recovery characteristic under lateral loads after the bond-free prestress bars are applied, and the common damage mode of weak joints and strong components of a common CLT shear wall is avoided. The assembling prestress orthogonal laminated wood shear wall is high in assembling degree, and prestress loss caused when CLT slabs have big creep deformation under the band stress action can be reduced obviously due to the arrangement of the slab supporting frames on the lower layer.

The invention discloses a manual hole digging pile and a construction method thereof. The manual hole digging pile is characterized by comprising a cylinder-shaped trunk pile body and a plurality of cylinder-shaped branch pile bodies. The branch pile bodies are fixedly distributed on the external wall of the trunk pile body and are distributed on a circumferencial section of the trunk pile body in a regular triangle way; a trunk spiral stirrup and a plurality of trunk force bearing ribs are arranged inside the trunk pile body; the trunk spiral stirrup is arranged on the inner wall of the trunk pile body along pile long spirals; the trunk force bearing ribs are uniformly distributed along the circumference of the inner surface of the trunk spiral stirrup; every branch pile body is provided with a branch spiral stirrup and a plurality of branch force bearing ribs; the branch force bearing ribs are arranged on the inner wall of every branch pile body along pile long spirals; a soil body which is corresponding to the trunk pile body is manually dug mainly in a cylinder-shaped trunk steel pile casing; and soil bodies which are corresponding to the branch pile bodies are manually dug mainly in cylinder-shaped branch steel pile casings. The manual hole digging pile and the construction method of the manual hole digging pile have the advantages of improving the side friction resistance, ultimate bearing capacity of the pile bodies and strength and stiffness of soil bodies around the pile and being capable of being widely applied to coastal soft soil areas.

The invention discloses a fiber reinforce plastic (FRP) rib fiber high-strength light-weight aggregate concrete beam member and a manufacturing method. Fiber is doped in fiber light-weight aggregate concrete, the flexural performance of a FRP rib fiber high-strength light-weight aggregate concrete beam can be effectively improved, the ultimate bearing force of the member can be improved, the flexural rigidity of the member is increased, so that the deflection of the beam is reduced, and the beam fundamentally meets the normal using state requirements; the crack width under the load effect further can be reduced; and compared with a steel bar light-weight aggregate concrete sample, after the fiber is doped, the ductility is greatly improved. According to a rib cage formed by a FRP rib, a longitudinal erection steel bar and a stirrup, a longitudinal tension rib is the FRP rib, and the corrosion resistance of the FRP rib can obviously improve the durability of the member during crack developing.

The invention discloses a grouting suction anchor comprising a cylinder body; the cylinder body has an integral structure comprising an upper part, an intermediate part and a lower part; the diameter of the upper cylinder body is identical to that of the lower cylinder body; the diameter of the intermediate cylinder body is less than those of the upper cylinder body and the lower cylinder body; the upper, the intermediate and the lower cylinder body share a same center line; a top part of the upper cylinder body is provided with multiple grouting inlets and scuppers; the grouting inlets are communicated with a grouting channel inside a side wall of the upper cylinder body; the grouting channel extends downwards to a lower end surface of the upper cylinder body; an outlet of a lower end of the grouting channel is positioned between the outer lateral surface of the upper cylinder body and the outer lateral surface of the intermediate cylinder body; the grouting channel and the cylinder body inner chamber are separated from each other. The invention also discloses an installation method of the suction anchor. After downward penetration of the suction anchor is completed, the intermediate cylinder body and soil body interspace are filled with cement mortar which can improve the lateral bearing capacity of the suction anchor. After the cement mortar is solidified, the friction coefficient between surrounding soil body and anchor cylinder contact surface is increased and the limit bearing capacity of the suction anchor is increased.

The invention relates to a method for connecting a resin-based composite material tube. The technical scheme of the invention is that: the outer surface of a joint of the resin-based composite material tube is provided with threads to match threads on the inner wall of a metal sleeve; and the metal sleeve of which the outside diameter is same as the inside diameter of the composite material tube is inserted into the joint of the resin-based composite material tube. The method overcomes respective defects of the conventional composite material connecting modes such as adhesion, bolt connection and adhesive and bolt mixed connection. The metal sleeve is connected with the composite material tube through the threads; the composite material tube is applied with radial pressure by an annular high-strength bolt or an interference fit method, the ultimate bearing capacity of the joint is improved, and the member stress reaches 700MPa; the shearing resistance of helical teeth and the interface friction transmit force together, so the connecting method has the advantages of difficult ageing, good fatigue resistance and multiple suitable section forms; and single or dual lug joints between composite material truss units, ball joints of composite material space trusses, anchorage devices with composite material ribs and cables can be manufactured and applied to truss bridges, space grids and prestressed bridges.

The invention discloses a post-grouting technology adopting a manual hole digging and all-casing construction method, and adopting a manner of installing a rubber capsule (cavity) at the bottom of a cast-in-place pile. The post-grouting technology is applicable to the technical field of foundation and underground space engineering. The background technology is that with regard to a borehole usinga mud protection wall at present, if a steel plate capsule is installed at the bottom of a reinforcement cage, the collapse of the hole wall of the borehole is easily caused, so that the sediment of the bottom of the hole exceeds the standard, and silt collapsing from the hole wall is easily accumulated on a steel plate, so that the quality of the cast-in-situ bored pile is influenced. The post-grouting technology has the most prominent characteristic that the limit conditions and the application conditions of closed grouting adopting a manner of installing a grouting container at the bottom of a pile are found; and the main content is that a manual hole digging method or an all-casing construction method is utilized for hole formation for the cast-in-place pile, the mud protection wall isnot used in a hole formation process, a grouting pipe is bound on the reinforcement cage, the steel plate is installed at the bottom of the reinforcement cage, the rubber capsule is installed on thebottom surface of the steel plate, and the grouting pipe penetrates through the steel plate and communicates with the rubber capsule. After the hole is formed by virtue of the construction method, thereinforcement cage is descended to reach the bottom of the hole, then concrete starts to be poured, and after the strength of the body of the pipe meets requirements, pressure grouting is carried outon the rubber capsule at the bottom of the pile through the grouting pipe.

The invention discloses a method for reinforcing an electric power tunnel by means of fiber grid enhanced polymer mortar and a material, and belongs to the technical field of fiber grid enhanced cement-based composite material reinforcing. Raw material components comprise cement, polymers, polyvinyl alcohol fibers, alkali-resistant glass fibers, sand, water, a water reducer, starch ether, cellulose ether and the like. The method comprises the steps that pre-repairing such as filling and blocking is conducted on masonry or concrete tunnel wall cracks with the polymer mortar, and the mortar is embedded into the cracks; the surfaces of rusted steel bars are painted with a steel bar corrosion remover, and the tunnel wall is painted with one or two layers of an interface agent; and structural reinforcing is conducted on the tunnel and the well wall through multiple layers of the fiber grid enhanced polymer mortar. In order to improve the anti-seismic overall property, 1-3 fiber rib enhancedconcrete ring beams are arranged; and pretreatment is conducted firstly, and then reinforcing is conducted.

An inserted-type steel truss joint construction comprises a steel truss joint, truss frame rod parts, fasteners, structural adhesives and bolts, wherein at least one be-inserted opening is formed in the steel truss joint, and a be-inserted end flange is arranged at the end of each be-inserted opening; each truss frame rod part is provided with an inserting end which can be in clearance fit with the be-inserted end of the steel truss joint, wherein an inserting end flange is arranged on the tail, opposite to the end of the truss frame rod part, of the inserting end; each fastener is composed of two half parts, a groove is formed in each fastener, and each groove is matched with the peripheries of the corresponding be-inserted end flange and the corresponding inserting end flange, upper half bosses are arranged at the two ends of a closing line of the first half parts of the fasteners, and upper half bolt holes are formed in each upper half boss, while a lower half bosses is arranged at the two ends of a closing line of the second half parts of the fasteners, and lower half bolt holes are arranged on the lower half bosses; structural adhesives are arranged in installing clearances; and the bolts enable the upper half bolt holes to be connected with the lower half bolt holes. The truss frame joint construction is high in construction efficiency, good in reliability, and long in service life.

A related steel rib-steel pipe regenerated-concrete combined column with a cross-shaped section is composed of a steel rib, a steel pipe, a steel skeleton and concrete; the steel rib is formed by welding steel plates, and is disposed on a limb of the cross-shaped column formed by stirrups in a circle; the steel pipe is at the core of the cross-shaped column; concrete is regenerated concrete and is at the interior and the exterior of the steel pipe and the interior of the cross-shaped column limb formed by stirrups in a circle; the steel rib is T-shaped by welding the steel plates; and corners of the cross-shaped column formed by stirrups in a circle are provided with vertical steel bars. Due to the fact that the regenerated concrete is at the interior and the exterior of the steel pipe, resource is saved and environment is protected. The steel skeleton constrains concrete and enhances the bearing capability of the column. The combined column is a main member of a framework structure of high-rise and wide-span buildings, and has the characteristics of high bearing capacity, high rigidity, light weight, good plasticity and toughness, good impact resistance and fatigue resistance, excellent earthquake-proof performance, good endurance, energy saving, environment friendliness and the like.

The invention discloses a high-strength building waste regeneration concrete composite beam and a construction method thereof. A high-strength building waste regeneration concrete composite beam body comprises a high-strength regeneration aggregate concrete prefabricated groove, cast-in-place regeneration block body concrete filled in the high-strength regeneration aggregate concrete prefabricated groove, a plurality of longitudinal bars arranged on a high-strength building waste regeneration aggregate concrete composite beam in the beam-length direction, a plurality of closed stirrups vertically arranged in the groove-length direction and bottom plate steel nails. According to the high-strength building waste regeneration concrete composite beam and the construction method thereof, overall manufacturing is convenient and quick, and the economic benefits are high; according to design of the bottom plate steel nails, adhering between the high-strength regeneration aggregate concrete prefabricated groove and the cast-in-place regeneration block body concrete can be tighter, integrality of the beam is improved, the bearing capacity of the structure is effectively improved, and the deformation property of the beam is improved; and ductility of components is increased, and the high-strength building waste regeneration concrete composite beam and the construction method thereof are applicable to beam structures such as heavy loads, industrial factory buildings, high-rise buildings and the large spans.

The invention discloses an adsorptive natural gas transporting tank for storing and transporting natural gas. A constant temperature system and a support structure are arranged at the inner part of the transporting tank, wherein the constant temperature system comprises heat dissipation holes and a constant temperature coiler; the support structure comprises support plates, more than two fixing plates and vertical pipes; the constant temperature coiler is communicated with the vertical pipes, the fixing plates are fixed through the vertical pipes, the constant temperature coiler is arranged on the fixing plates, and the support plates is arranged on the constant temperature coiler; activated carbon is placed on the one support plate, and another fixing plate is arranged on the activated carbon; the heat dissipation holes are formed in the support plate. Four hand holes are also formed in the transporting tank, so that the activated carbon is convenient to take out and exchange, and the transporting tank is convenient to maintain. In addition, high temperature N2 can also be directly connected with an air inlet pipe, the activated carbon does not need to be taken out, and regeneration is directly performed. The adsorptive natural gas transporting tank disclosed by the invention has the characteristics of being convenient to operate, good in applicability, high in safety and the like.

The invention relates to a concrete member, particularly to a cross shaped section composite column used for civil engineering. The steel skeleton-steel pipe fiber concrete cross shaped section composite column is composed of steel skeletons, a steel pipe, steel bars and fiber concrete. The steel skeletons are on the limbs of the cross shaped column, and are in favor of improving the stress performance of the limbs of the T-shaped column; the steel pipe is located at the intersecting core part of the column limbs, thus effectively limiting the brittle deformation of high-strength concrete and promoting application of high-strength concrete in the cross shaped column; the fiber concrete is arranged inside and outside the steel pipe, and the characteristics of the fiber material are fully utilized to improve the low brittleness, tensile strength, shearing resistance, bending strength and other disadvantages of high-strength concrete; the steel bar skeletons have a restriction effect on the fiber concrete and strengthen the bearing capacity of the column. The steel skeleton-steel pipe fiber concrete cross shaped section composite column provided by the invention is a main member of the frame structure in high-rise and large span buildings, and has the characteristics of high bearing capacity, high stiffness, light weight, good plasticity and toughness, good impact and fatigue resistance, excellent seismic performance, and good durability, etc.

The invention discloses a function gradient concrete composite well wall and manufacturing method and belongs to the technical field of vertical well construction. The function gradient concrete composite well wall is manufactured by adopting a prefabricating or cast-in-place manner. The function gradient concrete composite well wall comprises multiple layers of concrete well walls, wherein the concrete well walls are combined coaxially and closely, and elastic moduli of the concrete well walls are different. Damping material layers are arranged among the layers. All the well walls are arranged with different thicknesses. The concrete material performance is utilized fully, and the function gradient concrete composite well wall with the low requirement for concrete strength, small wall thickness and low project manufacture cost is manufactured. The elastic limit bearing capacity of a thick-wall cylinder is improved remarkably, and high-strength concrete does not need to be used. The well wall thickness is reduced, the material use amount is reduced, and the project manufacturing cost is reduced substantially.

The invention relates to a method for implanting steel bars to reinforce a groove-type beam bridge face plate through a UHPC thin layer. Particularly, super-high-strength performance of UHPC is utilized, by implanting the steel bars and pouring the UHPC, poured concrete and an original structure becomes a whole and bear force jointly. The UHPC has ultra-low permeability and high corrosion resistance, high cohesiveness with an interface, and the UHPC can form a good whole with the implanted steel bars after poured and can protect the steel bars against being rusted. The reinforced groove-type beam bridge face plate is light in self-weight and high in bend-tensile resisting strength; the ultimate bearing capacity of the reinforced structure can be improved greatly, no exposed steel bars or steel plate exist after reinforcing; later maintenance is easy, the maintenance cost is low, and a special maintenance means is not needed; early stage strength forming is fast; and the influence on traffic is little, the traffic does not need to be closed to conduct construction so that social and economic benefits are high.