60results about How to "Safe and smooth construction" patented technology

The invention relates to the technical field of civil engineering foundation reinforcing of industrial and civil construction projects, in particular to a pile foundation underpinning method for a building foundation adjacent to a deep foundation pit. The method includes the steps of firstly, investigating and designing, to be more specific, investigating the existing building, selecting foundation underpinning pile types according to building foundation size, buried depth, distance between the building foundation and the deep foundation pit and the depth of the deep foundation pit, calculating to determine the required length and number of foundation underpinning piles according to bearing capacity, allowing the foundation underpinning piles to exceed the depth of the bottom of the deep foundation pit, and completing ring beam design; secondly, pressing the piles at the edges of the building foundation; thirdly, performing pile foundation underpinning on the building foundation. The method has the advantages that the building foundation satisfies the requirements of bending resistance, punching resistance and shearing resistance by the aid of pile foundation underpinning, natural foundation bearing of the building foundation is changed into pile foundation bearing, additional load of the building foundation to the deep foundation pit is lowered greatly, sedimentation and horizontal displacement of the building foundation adjacent to the deep foundation pit are solved, and factory building safety is guaranteed.

The invention relates to a device and a process for filling aggregate into stratum cavities through surface drilling. The device comprises a hollow drill column extending into a drilled hole; a spraying head is arranged at the lower end of the drill column; a water joint is arranged at the upper end of the drill column, and is connected with an injection pump through a high-pressure rubber tube; an aggregate belt conveyor, a gyrator and a water pipe are arranged in the opening of the drilled hole; the drill column is inserted into the gyrator; the gyrator is connected with a drilling machine; the water pipe is connected with a water pump, so as to supply water to the drilled hole; and the aggregate belt conveyor conveys aggregate to the drilled hole. The invention has the advantages that various accidents generated when surface drilling is conducted on the stratum cavities are eliminated; and when aggregate is added during surface drilling, the drill column swings and shuttles, and aggregate entering into the drilled hole is washed out by water to a mined out space, so as to ensure that aggregate enter into the cavities smoothly and the drilling construction is safe and smooth.

The invention discloses a deep basement supporting construction method. The deep basement supporting construction method is characterized by comprising the following construction steps of: (1) constructing a layer of steel column foundation piles, two layers of steel column foundation piles, a layer of steel columns and two layers of steel columns; (2) constructing basement supporting row piles; (3) constructing basement waterproof curtains, and using cement mixing piles as the basement waterproof curtains; (4) constructing a layer of basement inner ring ring-beams and a layer of basement outer ring ring-beams; (5) constructing a layer of diagonal braces and angle braces; (6) carrying out pit earth excavation till reaching the construction elevation of the bottoms of two layers of basement inner ring ring-beams; (7) constructing two layers of basement inner ring ring-beams and two layers of basement outer ring ring-beams; (8) constructing two layers of diagonal braces; (9) carrying out pit earth excavation till reaching the construction elevation of the bottoms of three layers of basement bottom plates; (10) constructing the basement bottom plates; (11) constructing the outer concrete wall of the basement; (12) dismantling the two layers of basement inner ring ring-beams, the two layers of basement outer ring ring-beams and two layers of diagonal braces; (13) constructing two layers of basement floors; (14) dismantling a layer of basement inner ring ring-beams and a layer of basement outer ring ring-beams; and (15) constructing a layer of basement floors.

The invention discloses a muck improvement agent which comprises liquid A and liquid B. The liquid A comprises, by weight, 0.25-0.33 parts of sodium bentonite, 0.01-0.015 part of carboxymethylcellulose and 1 part of water. The liquid B comprises, by weight, 0.001-0.003 part of polyacrylamide and 1 part of water. The invention further discloses a method for improving water-rich round-gravel stratumshield muck by the muck improvement agent. According to the muck improvement agent, the liquid A with the volume injection ratio of 30%, the liquid B with the volume injection ratio of 7.5% and soilsamples from an on-site water-rich round-gravel stratum are stirred and mixed, the collapsing degree can be controlled within 20cm, a permeability coefficient K of improvement soil reaches 1*10<-7>m/sunder water pressure of 2.5bar (25m water head), continuous time reaches 4 hours or more, the permeability coefficient is smaller than 1*10<-5>m/s serving as a flowing critical value, and improvementeffects are good.

The invention relates to the technical field of foundation and foundation engineering, and discloses a deep and large foundation pit wireless intelligent monitoring system which comprises an automatic data acquisition unit used for acquiring foundation pit monitoring data and a wireless remote transmission unit used for wirelessly transmitting the acquired data, and a monitoring service platform which analyzes the foundation pit monitoring data. The deep and large foundation pit monitoring system integrating automatic data acquisition, wireless data transmission, sensor free networking and remote intelligent control is developed by using the Internet of Things technology, real-time, accurate and continuous data are provided for monitoring of the deep and large foundation pit, the deformation trend of the foundation pit is predicted, a scientific early warning mechanism is established, and the safety state of the foundation pit is judged so that safe and smooth construction of the foundation pit is guaranteed, the defects that a conventional manual monitoring means needs more personnel investment, time consumption is long, errors are large and data processing is lagged are overcome, meanwhile, data collection is continuous, the dynamic change conditions under various working conditions can be reflected, and real-time monitoring and early warning are achieved.

The invention belongs to the technical field of building construction, and particularly relates to a substrate water gushing and sand gushing treatment method. The treatment method comprises the following steps that S1, surveying and setting out are carried out, and the position of a secondary excavation foundation pit is determined; S2, supporting piles and a waterproof curtain are constructed; S3, a foundation pit is excavated; S4, the soil surface is excavated to a preset elevation and flattened, and a submersible pump is placed to pump and drain accumulated water; S5, water and sand gushing points on the soil surface of the substrate are found out, and a water flowing pipeline is built by using bricks, so that water flowing out of the water gushing points is collected to a middle dewatering well to be discharged; S6, a formwork and plastic cloth are laid on the top faces of the bricks; S7, a water stop steel shaft is installed in the dewatering well, and a cushion layer is poured;S8 a waterproof layer is laid, and concrete is poured; and S9, the dewatering well is plugged. According to the substrate water gushing and sand gushing treatment method, the bottom surface of the foundation pit can be rapidly and effectively sealed, the harmful effect of water gushing and sand gushing of the substrate on the foundation pit is restrained to a large extent, and safe and smooth construction of a main body reinforced concrete structure is guaranteed; and the construction method is simple, low in cost and remarkable in effect.

The invention discloses a prefabricated assembly-type underground granary, which comprises a granary bottom, prefabricated granary wall plates, a granary top and multifunctional columns, wherein the granary wall plates are arc-shaped prefabricated plate blocks; connecting devices are arranged on the peripheries of the granary wall plates; the granary wall plates can be connected with the adjacent granary wall plates and the multifunctional columns through the connecting devices; the multifunctional columns are used for locating a granary wall; the depths that the multifunctional columns are anchored into earth are more than the depth of the granary bottom; the multifunctional columns are main stress components for bearing the pressure of the earth and the lateral pressure of grains and resisting buoyant force. The prefabricated assembly-type underground granary is characterized in that the outer sides, the left ends and the right ends of the prefabricated granary wall plates are all clad with steel plates; further, the left ends of the prefabricated granary wall plates are provided with convex-type trapezoidal or semi-elliptical plugs; the right ends of the prefabricated granary wall plates are provided with concave-type trapezoidal or semi-elliptical slots; the multifunctional columns are divided into several sections from tops to bottoms; the inner sides of first sections of the uppermost layer are provided with a first layer of the granary wall plates; the inner sides of second sections are provided with a second layer of the granary wall plates; the granary wall plates are arranged until the bottommost layer of the granary wall plates by using a similar arrangement way, so as to form a round assembly-type underground granary structure.

The invention discloses a hydraulic movable dam with high impact resistance, and relates to the technical field of hydraulic movable dams. A first-stage energy dissipation mechanism and a second-stageenergy dissipation mechanism are arranged in an impact force energy dissipation unit, the first-stage energy dissipation mechanism performs primary offsetting on impact force which is generated during wave impacting and acts on a pressure-resistant plate through a simple spring and a telescopic rod structure, the second-stage energy dissipation mechanism is integrally and technically characterized in that remaining impact force, namely kinetic energy, is converted into potential energy, due to the fact that multiple whole impact force energy dissipation units are arranged and evenly distributed on an existing movable dam body structure, impact force generated during wave impacting acts on the pressure-resistant plate in a large area instead of a dam body, so that on one hand, the whole dam body structure can be protected, on the other hand, a whole electric hydraulic cylinder is protected, the problem that the dam body and an electric hydraulic rod are damaged due to long-term impactand the dam body cannot be normally opened and closed is solved, and the service life of the hydraulic movable dam is prolonged.

The invention relates to a construction method for steel cofferdams in a complex torrential water area. The method comprises the following steps that, firstly, a rhombic fixed pile group and two corner fixed steel pipe piles are constructed; then an underwater cofferdam support is hoisted on a turbulent flow facing surface, and a double-layer steel cofferdam is constructed; then, guide piles, guide beams and a single-layer steel cofferdam on two sides are synchronously constructed, and guide piles, guide beams and a single-layer steel cofferdam on the inner side are constructed; next, steel casings are driven in the steel cofferdams, and overwater support frames are constructed on the steel casings close to the steel cofferdams for later water pumping to resist the pressure of outer water; next, guide piles, guide beams and a single-layer steel cofferdam on the outer side are constructed; and finally, desilting is conducted in the steel cofferdams, underwater concrete is poured for bottom sealing, and water in the steel cofferdams is pumped. The construction method has the beneficial effects that a supporting frame with the sliding rail system is arranged between the peripheral steel pile casings and the guide beams, so that the steel pile casings can be used for supporting the steel cofferdams, and the influence of continuous driving of steel pile casings can be avoided.

The invention discloses a method for treating boulders in a reinforced zone of a starting end. According to the condition of the boulders in the reinforced zone of the starting end, three boulder treatment manners of boulder detonation, rotary excavating and drilling mechanical treatment and in-hole perforated smashing are compared and analyzed, it is confirmed that the construction method of in-hole perforated smashing is mainly adopted for treating the boulders in the reinforced zone of the starting end, and safe and smooth conduction of shield construction is achieved.

A prefabrication assembly type round underground granary comprises a granary bottom, a plurality of prefabricated granary wall plates, a granary top beam plate, multifunctional pillars and a plurality of layers of enhancing pillars, wherein the granary wall plates are arc prefabricated plates, and can be connected with the adjacent granary wall plates, the multifunctional pillars and the plurality of layers of enhancing pillars by means of connection devices; each multifunctional pillar is used for positioning a granary wall, and the depth of each multifunctional pillar anchored into soil is greater than the depth of a granary bottom plate; each multifunctional pillar is divided into a plurality of sections from top to bottom, the inner side of each first section on the uppermost layer is provided with a first-layer granary wall plate, one enhancing pillar is firstly arranged on the inner side of the corresponding second section, the inner side face of each enhancing pillar is enabled to be flush with the inner side face of the first-layer granary wall plate, then a second-layer granary wall plate is arranged on the inner side face of the corresponding enhancing pillar, and each first-layer granary wall plate and the corresponding second-layer granary wall plate are partially overlapped; by using an arrangement mode similar to that above, the second-layer granary wall plates and third-layer granary wall plates are partially overlapped, and overlapping is performed until the bottommost-layer granary wall plate is overlapped; the inner-side and outer-side steel plates and concrete therebetween are connected by adopting rivets.

The invention discloses a comprehensive treatment and reinforcement method for collapse of a stratum around an offshore deepwater inclined pile. According to the comprehensive treatment and reinforcement method for collapse of the stratum around the offshore deepwater inclined pile, multiple means such as inclined hole grouting, inclined hole jet grouting and pile mixing are adopted, an integrated new composite foundation is formed to reinforce soil around the pile, the treatment effect and quality of the collapse of the stratum around the offshore deepwater inclined pile are remarkable, the follow-up pile foundation construction is effectively ensured to be safely and smoothly carried out, the construction period is greatly shortened, the economic loss is greatly reduced, the bearing capacity and stability of the offshore deepwater inclined pile foundation are effectively guaranteed, and potential safety hazards are completely eradicated.

The invention provides a prefabricated assembling type underground barn. The plane shape of the underground barn is round; the underground barn comprises a barn bottom, a plurality of prefabricated barn wall plates, a barn top, a multifunctional column and a reinforcing column; the barn wall plates are arc-shaped prefabricated plate blocks and a connecting device is arranged at the periphery; the barn wall plates can be connected with the adjacent barn wall plate, the multifunctional column or the reinforcing column through the connecting device; the multifunctional column is used for positioning a barn wall; the depth of anchoring the multifunctional column into soil is greater than the depth of the barn bottom and the multifunctional column is a main stress component for bearing the soil pressure and the grain pressure and resisting buoyancy; the prefabricated assembling type round underground barn is characterized in that the multifunctional column is divided into a plurality of sections from top to bottom; a first-layer barn wall plate is arranged at the inner side of the first section of the uppermost layer; the reinforcing column is firstly arranged at the inner side of the second section so that the inner side face of the reinforcing column is leveled with the inner side face of the first-layer barn wall plate; a second-layer barn wall plate is arranged on the inner side face of the reinforcing column, so that the first-layer barn wall plate and the second-layer barn wall plate are partially overlapped; a similar setting manner is adopted so that the second-layer barn wall plate and a third-layer barn wall plate are partially overlapped until the barn wall plate on the bottommost layer is overlapped to form the step-like assembling type round underground barn.

The invention discloses a grouting reinforcement method for collapse of a stratum around a marine deepwater inclined pile. Reinforcement means of intra-pile inclined hole grouting and extra-pile inclined hole grouting are adopted, an integrated new composite foundation is formed to reinforce a soil body around the pile, the treatment effect and quality of the collapse of the stratum around the marine deepwater inclined pile are remarkable, the follow-up pile foundation construction is effectively ensured to be safely and smoothly carried out, the construction period and the economic loss are greatly reduced, the bearing capacity and the stability of the marine deepwater inclined pile foundation are effectively guaranteed, and potential safety hazards are eradicated.

A prefabrication assembly type underground granary comprises a granary bottom, multiple prefabricated granary wall plates, a granary top, multifunctional pillars and multiple layers of enhancing pillars, wherein each granary wall plate is of an integral structure formed by combining a plastic plate on the outer side and a concrete slab on the inner side, each granary wall plate is provided with connection devices on the periphery, and the granary wall plates can be connected with adjacent granary wallboards, the multifunctional pillars and the multiple layers of enhancing pillars by means of the connection devices; the multifunctional pillars and the enhancing pillars are wrapped by plastic plates, can be used for positioning the granary wall plates, and are main stress components for bearing soil pressure and grain pressure and resisting buoyance, and the depth of each multifunctional pillar and each enhancing pillar anchored into soil is greater than the depth of the granary bottom; the underground granary is characterized in that each multifunctional pillar is divided into a plurality of sections from top to bottom, the inner side of each first section on an uppermost layer is provided with a first-layer granary wall plate, the corresponding enhancing pillars are firstly arranged on the inner side of the corresponding second section, the inner side faces of the enhancing pillars are enabled to be flush with the inner side face of the first-layer granary wall plate, then a second-layer granary wall plate is arranged on the inner side face of the corresponding enhancing pillar, and the first-layer granary wall plate and the second-layer granary wall plate are partially overlapped; by using an arrangement mode similar to that above, the second-layer granary wall plate and a third-layer granary wall plate are partially overlapped, and overlapping is performed until a bottommost-layer granary wall plate is overlapped, thus forming the ladder-like assembly type underground granary.

A prefabrication assembly type underground granary comprises a granary bottom, a plurality of prefabricated granary wall plates, a granary top, multifunctional pillars and a plurality of layers of enhancing pillars, wherein each granary wall plate is of an integral structure formed by combining a plastic plate on the inner side and a concrete slab on the outer side, the granary wall plates are provided with connection devices on the peripheries, and can be connected with the adjacent granary wall plates, the multifunctional pillars and the plurality of layers of enhancing pillars by means of the connection devices; the multifunctional pillars can be used for positioning the granary wall plates, and are main stress components for bearing soil pressure and grain side pressure and resisting buoyance, and the depth of each multifunctional pillar anchored into soil is deeper than the depth of the granary bottom; the underground granary is characterized in that each multifunctional pillar is divided into a plurality of sections from top to bottom, the inner side of each first section on the uppermost layer is provided with a first-layer granary wall plate, the corresponding enhancing pillars are firstly arranged on the inner side of the corresponding second section, the inner side faces of the enhancing pillars are enabled to be flush with the inner side face of the first-layer granary wall plate, then a second-layer granary wall plate is arranged on the inner side face of the corresponding enhancing pillar, and the first-layer granary wall plate and the second-layer granary wall plate are partially overlapped; by using an arrangement mode similar to that above, each second-layer granary wall plate and a third-layer granary wall plate are partially overlapped, and overlapping is performed until the bottommost-layer granary wall plate is overlapped, thus forming the step-like assembly type underground granary.

The invention discloses a selecting method of a stress suspender used for hydraulic lifting and leveling of a circular structure. The selecting method comprises the following steps of (a) assuming that the total number of suspenders is Z, the number of suspenders in a work area is Zg, the number of suspenders in a non-work area is Zf, and Zf = Z-Zg; (b), assuming that m jacks are arranged on each suspender in series, lifting force of each jack is Pg, and stress of each work suspender is Ng, and Ng = m*Pg; (c), determining the distance between the total resultant force Nc and a center line of the circular structure; (d), determining a function relation between the PG, the m, the Zg, the Z and the self weight W of the circular structure; (e), determining work stress Nj of a static load suspender; and (f), selecting a proper suspender specification. By the adoption of the method, the stress of a lifting and leveling suspender of the circular structure can be calculated accurately, thus a basis can be provided for selection of a proper suspender, and safe proceeding of construction can be ensured.