43results about How to "Increase horizontal resistance" patented technology

The invention discloses a local buoyancy ocean platform of offshore wind power, a bridge and an ocean building, and a construction method. The platform comprises at least one buoyancy cylinder, wherein the buoyancy cylinders are arranged vertically; the bottoms of the buoyancy cylinders are conical; and the buoyancy cylinders are hollow cylinders. Buoyancy of the buoyancy cylinders can be used for offsetting the weight of partial hydraulic buildings; small-bore bored piles or small-bore driven piles are arranged at the bottoms of the buoyancy cylinders, and fixed with seabed bed rock or a supporting layer, and support an external force together with a soil layer at the conical bottoms of the buoyancy cylinders; a tilting load borne by a whole foundation is converted into a vertical pressing and up-pull load of a single buoyancy cylinder foundation by a multi-buoyancy-cylinder space structure; the bearing capacity and the tilting resistance of the foundation are very high; multiple platforms can be connected into a multi-platform system; the platform can be cast in land, prefabricated, or assembled on a coast, and then hauled, towed and floated to a mounting position; and the platform is applied to ocean green energy sources such as the offshore wind power, the bridge and the ocean building with a soil layer of above 5m and water depth of about 5m to 50m, and has great potential economic benefits.

The invention provides a method for ensuring the position of a load box and pile quality and effectively transmitting axial force, shearing force and bending moment in self counter force balance loading test of engineering pile bearing capacity. A built-in jack of the load box is connected with a top cover plate and a bottom cover plate through high strength bolts, without being affected for normal loading, and consequently the load box transmits certain bending moment. The periphery of the load box is provided with twisted steels that are mutually lapped together and protected by a telescopic pipe, and mudjacking and solid joints are conducted after test, so that a reinforcing cage achieves the effect of overall equivalent connection and bears great shearing force and bending moment. The load box and the reinforcing cage are connected by means of inside cutting, and the horizontal resistance of a pile is increased at the load box. The surrounding gap of the pile is mudjacked at the load box after test to keep the continuity and integrity of pile concrete and ensure the axial force transmission of the pile and the vertical bearing capacity. The bottom of the bottom cover plate of the load box is provided with a conical flow guide body in order to avoid mud and sediments remaining on the bottom of the bottom cover plate when the pile concrete passes through the load box in pouring and ensure the pile quality and test accuracy.

The present invention relates to a method for applying a crack resistant coating on a surface, where the crack resistant coating increases resistance to high vertical and horizontal movements and high shear stresses on the surface. The method comprises the steps of applying a binding material to the surface and applying an aggregate mixture within 15 seconds of applying the binding material to the surface, where the aggregate mixture comprises aggregate particles and an asphalt solution and where the aggregate mixture has a plurality of air voids, and where the binding material fills at least 15% of the air voids in the aggregate mixture (AVFA).

The invention discloses a long segmental structure of an offshore high-piled wharf; pile tops adopt a hinge joint mode to reduce the bending moment of piles generated by temperature deformation and meet the requirement of pile top connection of construction under the severe condition of offshore deep water and storms; fork piles or inclined piles more than 25 m away from a temperature deformation balanced line are arranged by adopting small horizontal included angles to reduce the axial force of the piles generated by the temperature deformation; fork piles or inclined piles less than or equal to 25 m away from the temperature deformation balanced line can be longitudinally arranged to improve the capability of resisting longitudinal horizontal force of the wharf; the first bent span space of two segmental edges is appropriately reduced to reduce the design internal force of stringers, beams and piles; and rail connection structures of a plurality of small segments, with intervals of less than or equal to 20 mm, are adopted at an expansion joint to meet the working requirement of the expansion joint for the mechanical smooth transition of a rail. The long segmental structure of the offshore high-piled wharf successfully solves the technical problem of the long segmentation of the wharf, and the segmentation length is usually more than 120 m so as to reduce the horizontal force loaded by the bents, reduce the construction cost, and facilitate replacing steel pipe piles by adopting large tubular piles (which contain PHC piles).

The invention discloses a method for supporting a foundation pit, and relates to the technical field of geotechnical engineering. The method includes steps of firstly, constructing a space enclosing structure, a pier pile supporting row and a pile base line at the design position simultaneously; then constructing a crown beam at the top part of the space enclosing structure, and then excavating earthwork in the foundation pit until the top part of the pier pile supporting row is exposed; constructing a strip-shaped supporting base at the top part of the pier pile supporting row; constructing apurlin on the space enclosing structure beneath the brown beam, and erecting a supporting arm between the strip-shaped supporting base and the purlin; then excavating the earthwork at the edge of thefoundation pit to the bottom part of the foundation pit by a reversed basin shaped excavation method; constructing a side span bottom plate at the top part of the pile base row, and then constructinga diagonal arm between the strip-shaped supporting base and the side span bottom plate so that the strip-shaped supporting base and the side span bottom plate are effectively connected. The method has the advantages of effectively reducing the main body construction difficulty, improving the construction efficiency, facilitating the earthwork excavation of the foundation pit, and effectively reducing the construction cost.

The invention discloses a device for reducing negative friction resistance of a pile foundation in a soft soil area and a construction method. The device for reducing negative friction resistance of the pile foundation in the soft soil area comprises an inner sleeve, a negative friction pipe and an outer sleeve; the negative friction pipe is connected with the inner sleeve through a rubber sealingring at the bottom and peripheral cushion blocks at a certain interval; the negative friction pipe is in an inverted cone shape; and a gap between the negative friction pipe and the inner sleeve is filled with pebbles and fine sands. According to the construction method, the vertical bearing capacity of the vertical load-hearing pile foundation can be improved by utilizing the inverted cone-shaped negative friction pipe, the pile diameter of the negative friction pipe is larger than the diameter of the pile foundation, and the horizontal bearing resistance of the pile foundation can also be increased; meanwhile, the combination device of the negative friction pipe and the inner sleeve is utilized, so that the pile foundation and the negative friction pipe slide relatively, the negative friction resistance caused by settlement of oversize soils around a pile is reduced, additional load and additional settlement of the pile foundation can be effectively reduced, and problem of the uneven settlement of the pile foundation in the soft soil area is solved. The construction method is wide in application range, and has the advantages of saving resources, improving social and economic benefits, being beneficial to traffic operation safety and building safety, and the like.

The invention discloses an arch bar foundation the foundation plate of which comprises a plurality of arch bars with arch sections. As the arch bar shape of the arch bar foundation of the invention has better structural stiffness and better stability than the plate shape of the traditional foundation, capabilities of horizontal force resistance, slippage resistance, differential settlement reduction and the like of the foundation are improved. The invention also provides a construction method of the arch bar foundation, comprising the following steps: 1) leveling the land; 2) producing arch groves; 3) casting and pounding a cushion coat; 4) arranging an arch bar moulding board; 5) arranging a foundation beam moulding board; 6) binding the arch bar and foundation beam steel; 7) casting and pounding arch bar concrete; and 8) casting and pounding foundation beam concrete.

The invention relates to a fill slope frame micro-tensioning supporting anchor plate supporting structure and a construction method thereof. The supporting structure comprises a frame body arranged along a fill slope surface, a plurality of supporting anchor plates (16) arranged in a fill soil body and arranged in parallel in the height direction, and a plurality of steel strand inhaul cables (10)connecting the supporting anchor plates (16) and the frame body. The frame body comprises a soil retaining panel (4), cross beams (3) and stand columns (2) which are arranged on the soil retaining panel (4) in a staggered mode, foundation piles (1) which are arranged below natural ground (27) at the toe of the fill slope and connected with the bottom ends of the stand columns (2), and cast-in-place concrete which enables the foundation piles, the stand columns, the cross beams and the soil retaining panel to be cast in place into a whole. The supporting structure is simple in form, reasonablein stress and high in practicability, the related construction technology is simple and convenient, the cost is low, and the supporting structure has high engineering practical value and important social and economic benefits and is worthy of large-range application and popularization.

The invention relates to a synchronous-grouting pre-stressed pipe pile. The synchronous-grouting pre-stressed pipe pile comprises a special pile shoe device, a prefabricated pipe pile, a grouting pipedevice and a grouting layer; the special pile shoe device comprises a main grouting pipe, branch pipe joints, branch pipes and grout discharging holes; the upper end of the main grouting pipe is connected with the grouting pipe device; the lower end of the main grouting pipe is connected with the branch pipes via the branch pipe joints; each branch pipe is connected with the corresponding grout discharging hole; the grout discharging holes are uniformly distributed at an equal interval in the outer side of a pipe pile juncture at the edge of a pile shoe; the grouting pipe device is arranged inside a cavity of the prefabricated pipe pile; and the grouting pipe device comprises a four-claw hook, an upper end interface, a grouting pipeline and a lower end interface. The synchronous-groutingpre-stressed pipe pile provided by the invention has the beneficial effects that the synchronous-grouting pre-stressed pipe pile is a novel pile foundation which is formed by adopting a pile jacking-in method and is additionally provided with a special pile shoe based on an original pre-stressed pipe pile; by synchronous grouting, the sidewall of the pipe pile can be lubricated by grouting liquid,so the difficulty of pile pressing is reduced, and the requirements on the bearing capacity of a place and the requirements on pile pressing equipment are reduced.

The invention discloses an integrated steel anchor pipe foundation structure of a highway guardrail and a sound barrier and a construction method thereof. A steel anchor pipe has the advantages of rapid construction and low cost construction, and the key is that the superior anchoring performance of the steel anchor pipe, which is deeply anchored in the ground, can provide large horizontal resistance for the guardrail and the sound barrier and ensure long-term safe use of an upper structure; and at the same time, the reinforcement of steel anchor pipe can improve the stability of subgrade slope. The construction method comprises the following construction methods of material preparation and manufacture, measuring and placing of steel anchor pipe pile positions, driving holes into steel pipes, preparing grouting liquid and working procedures, first grouting, embedding vertical ribs and installing grout sealing sheets and the like. The technology is mature, the working procedures are reasonable, the construction is carried out simultaneously with subgrade and pavement construction, and the construction method has the characteristics of rapid construction. A wide application prospectfor a road equipped with the guardrails and the sound barrier is achieved.

The invention discloses a non-brace support device which comprises support piles, anchor cables, support pillars and unbonded anchor cables. The invention provides a construction method of the non-brace support device. According to the device, by utilizing the functions of the anchor cables and the support pillars, the acting forces stressed on the support piles are transmitted into a soil body. According to the non-brace support device and the construction method thereof provided by the invention, the sufficient horizontal forces are provided through the unbonded anchor cables, and the horizontal pulling forces stressed on the unbonded anchor cables are transmitted to the bedrock positions on the pile bottoms through the support pillars. By adopting the vertically arranged anchor cables and the horizontally arranged unbonded anchor cables, the occurrence of the phenomenon that an existing anchor cable is slantways inserted into the soil body and occupies a large area so as to be limited by the neighboring building foundation is avoided, and the occupied area is reduced, so that the non-brace support device not only meets the engineering needs but also can be applicable to the places with the limited area. On the premise of ensuring the safety, the use of the anchor cables is reduced, the cost is saved, and the non-brace support device has the beneficial effects of simple structure, less occupied range, and low construction cost.

The invention relates to the field of civil engineering, in particular to a novel BNT carrier pile and a construction equipment construction method of the novel BNT carrier pile. A pile hammer, a diesel hammer or a vibration hammer is used for replacing a shaking or rotary device as power, and a dowel bar and a replacement standard pile hammer are strongly combined with the BNT technology to achieve construction of the carrier pile. The high-quality potential of high bearing capacity of the carrier pile and the advantages of high pile forming quality and high applicability of the BNT technology are fully explored; some problems existing in the original carrier pile forming concept and construction are solved; through diversification of construction forms and equipment and by taking the three-strike penetration requirement as a criterion, the design and the construction are enabled to be based on the evidence; and complexity is replaced by simplicity, the process is simplified, and finally the BNT carrier pile with high bearing capacity, good effect, high speed, low cost and wider application range is realized to meet the increasingly high different requirements of engineering construction on pile foundations.

The invention discloses a vertical-to-transverse bidirectional constraint anchoring pile supporting structure. The structure comprises a plurality of anti-slide piles which are arranged in parallel and vertically or obliquely, top beams and brackets are arranged at the tops of the anti-slide piles; an inter-pile baffle is arranged between every two adjacent anti-slide piles; a first anchor cable is arranged at the top of the bracket; one end of the first anchor cable is connected with the top of the bracket through a first anchor head, an anchor cable steering device is arranged on the bracket, one end of the anchor cable steering device is fixedly connected with one end of the first anchor cable, the other end of the anchor cable steering device is fixedly connected with one end of the second anchor cable, and the other end of the second anchor cable is fixed to the front side of the anti-slide pile through a second anchor head. Vertical constraint and transverse constraint are simultaneously provided through an anchor cable of the anchor cable steering device; the supporting function of the anchoring piles is achieved, the supporting points of the first anchor cables and the steering devices act on bracket vertical loads, the anti-slide pile top anti-overturning bending moment is provided, pile top deformation can be strictly controlled, the supporting cost is reduced, the reliability of a supporting structure system is improved, and application and popularization are facilitated.

The invention belongs to the technical field of civil engineering, and relates to an assembly rib-based pile body toughening and displacement monitoring test device, which comprises an outer protective cylinder for fixing an assembly rib, a wedge-shaped assembly rib and a connecting rod for ensuring the perpendicularity of the assembly rib on the wedge-shaped assembly rib, the pressure sensors are arranged on the contact surfaces of the assembling ribs and the pile body; the stay wire displacement meters are arranged on the connecting rods; and an intelligent data acquisition device. The assembling ribs are selected, on one hand, the pulling resistance of the pile can be enhanced, meanwhile, the contact area between the pile side and soil is increased, and the pile side friction resistance is improved; meanwhile, the pile side assembling ribs can play a hoop role, the compression resistance and the horizontal displacement resistance of the pile body are enhanced, and the overall toughness of the pile body is improved; transportation is convenient, and certain engineering significance is achieved; and meanwhile, on-site installation can prevent the rib from being damaged or the sensor from being disturbed during pile pressing. And a scientific and feasible design method is provided for pile body sidesway monitoring.

The invention discloses a combined snowflake type pile foundation construction system and a construction method. The pile foundation construction system comprises a combined snowflake type pile foundation and construction equipment, wherein the combined snowflake type pile foundation comprises a snowflake type concrete steel sheet pile and a powder spraying pile; the snowflake type concrete steel sheet pile is pressed into the powder spraying pile under the action of the construction equipment; the construction equipment comprises a base and an operation device; the operation device comprises a plurality of positioning locking devices, a manual operation system, a two-dimensional code remote operation system, a computer remote operation system and an operation system control center; the positioning locking devices are used for positioning the snowflake type concrete steel sheet pile; and the operation system control center is used for converting the manual operation system, the two-dimensional code remote operation system and the computer remote operation system so as to control the locking sizes of the positioning locking devices and the height of the construction equipment. According to the combined snowflake type pile foundation construction system and the construction method, the perpendicularity of a pile body is guaranteed when the snowflake type concrete steel sheet pile is sunk into the powder spraying pile, and the horizontal ultimate bearing capacity of the combined snowflake type pile foundation is improved.