709 results about "Basement" patented technology

The invention provides a building waterproof roll construction method. The building waterproof roll construction method comprises the following steps that pre-paving waterproof construction is conducted on a base layer; performing waterproof construction on the basement side wall; and performing waterproof construction on the basement roof. The building waterproof roll construction method has the beneficial effects that roll waterproof construction can be conducted on a base layer, a basement side wall and a top plate, the construction process is reasonable, waterproof roll lap joints can be treated, the good waterproof effect can be achieved, waste of waterproof rolls is avoided, and in addition, the construction cost is reduced. The construction method strictly meets the requirements of construction specifications, rapid construction can be achieved, the construction efficiency is improved, the safety of constructors can be protected, and practicability is high.

The utility model relates to a lighting, heat-insulating and waterproof window well of a building and belongs to the technical field of window wells. Comprising a basement wall and a lighting assembly, window wells are arranged on the basement wall, the lighting assembly comprises lighting windows and suspended ceilings, the lighting windows and the suspended ceilings are located at the tops and the bottoms of the window wells respectively, the window wells comprise the upper window wells and the lower window wells, and the lower window wells are in a horn shape; a waterproof heat preservation assembly is arranged between the window well and the basement wall, a drainage pipe penetrating through the waterproof heat preservation assembly is arranged in the basement wall, the waterproof heat preservation assembly comprises a waterproof roll layer, a cement mortar smearing layer and a graphite polystyrene board, and the cement mortar smearing layer and the graphite polystyrene board conduct heat preservation on the window well. According to the building daylighting heat-preservation waterproof window well, the daylighting efficiency and uniformity are improved through the design of the outwards-convex-pyramid-shaped daylighting window and the horn-shaped lower window well, the waterproof heat-preservation assembly is combined with the graphite polystyrene board, heat transfer is effectively prevented, the heat-preservation performance is enhanced, and meanwhile the waterproof effect is improved through the waterproof roll layer and the cement mortar smearing layer.

An expandable multifunctional integrated-construction skyscraper building platform and a construction method using the same are provided. The expandable multifunctional integrated- construction skyscraper building platform includes: a building foundation part, including an underground level, a basement level and a ground level which form a main body; an external frame part, a bottom of the external frame part being fixed deep into the underground level, and a top of the external frame part running through the basement level and the ground level to reach upper air such that lifting platform parts arranged on the external frame part are capable of going up from the underground level for construction; a transportation elevator part and a three-layer enclosure part, mounted on the building foundation part; a top transfer part, mounted on a Chinese character “Ri” frame at a top of the external frame part; and a carrying tower.

The invention discloses a storey-adding construction method for a basement with an existing box type foundation and a multi-layer frame structure, and belongs to the technical field of constructional engineering and city renewing.The storey-adding construction method comprises the following steps that S1, storey-adding buildings of the existing basement are evaluated; s2, underground diaphragm wall construction; s3, reinforcing the existing basement storey-adding building foundation; s4, the overground structure of the existing basement storey-adding building is reinforced; s5, foundation underpinning construction is conducted; s6, earth excavation is conducted at the storey-adding position of the existing basement; s7, construction of a storey-adding foundation bottom plate; and S8, layer-adding underpinning column and top plate construction. According to the storey-adding construction method for the basement with the box type foundation and the multi-layer frame structure, storey-adding transformation is conducted on the basement of an existing building, the usable area of the building is effectively increased, the construction efficiency is improved, the influence on the surrounding environment is reduced, and the urban development and the ever-increasing space requirements of people are met.

The invention relates to a design and construction integration-based early crack control method for a building outer wall, and relates to the technical field of wall crack control, and the design and construction integration-based early crack control method comprises the following steps: reducing hydration heat and self-constriction by reducing cement consumption in concrete and optimizing aggregate gradation, and carrying out regulation and control design aiming at material temperature and material self-deformation; steel bar design is constructed, and reinforcement optimization is conducted according to temperature stress and shrinkage stress in the early stage; temperature and humidity are regulated and controlled in the building construction stage, and concrete inside and outside temperature difference and surface and atmosphere temperature difference are controlled. The early cracking risk and early crack control of the basement concrete outer wall can be reduced, so that the durability of the basement concrete outer wall is improved.

The invention provides an underground building attribute information determination method, electronic equipment and a storage medium, and the method comprises the steps: obtaining an underground building image of a target underground building and carrying out the image correction, and obtaining a target underground building image; vectorizing the target underground building image to obtain underground building element images corresponding to the basement plane graph and the pile foundation plane graph; positioning the underground building element image based on the general plan and the topographic map, and determining the position of each building element; and determining attribute information of the target underground building structure based on the position and the element level of each building element. According to the invention, the indoor digital investigation method is adopted, the image and element information of the underground building is digitally acquired, and the digital technology of image correction, vectorization processing and space element positioning is combined for processing, so that the manpower and material resource cost is saved, and the progress and efficiency of underground building investigation are guaranteed.

The invention relates to the technical field of operation and maintenance management, and discloses a historical building operation and maintenance management method and system based on digital twinning, and the method comprises the steps: building a digital substrate based on historical data and point cloud, dividing a monitoring region according to a bearing structure, value elements and a function space, and associating an identifier. And mapping the operation data to a corresponding component storage space according to the area to which the operation data belongs, and forming a dynamic operation and maintenance file and a monitoring data stream. And performing visual coding on the data stream by taking the acquisition time as a horizontal axis and the spatial topology as a longitudinal axis to generate a spatial-temporal distribution map. And determining an abnormal area according to fluctuation form difference and trend deviation degree of real-time and historical data in the map, and binding identifiers and time periods to generate an abnormal list. Updating the file by taking the list as an index, and matching the disease record with a historical maintenance record to generate an operation and maintenance management scheme; the efficiency of historical building operation and maintenance management based on digital twinning can be improved.

The utility model belongs to the technical field of hanging and supporting formwork structures, and particularly relates to a basement roof post-cast strip butterfly-shaped double-spiral hanging and supporting formwork structure which comprises a supporting outer barrel rod and a supporting screw rod connected to the interior of the supporting outer barrel rod, and the top end of the supporting screw rod is connected with a supporting plate. The butterfly-shaped double-spiral type hanging and supporting formwork structure is placed at the position of a crack of a post-cast strip of a basement top plate, then the supporting plate is in contact with the supporting outer barrel rod, the adjusting spiral block is connected to the top end of the supporting outer barrel rod, the limiting ring is connected to the bottom face of the adjusting spiral block, and the bracket rod barrel is connected to the surface of the supporting screw rod. Meanwhile, the bracket supports the steel pipe beam, the supporting plates at the two ends of the bracket are stretched to drive the limiting grooves in the side edges of the supporting plates to slide along the surfaces of the limiting blocks, and then the nuts are screwed on the surfaces of the screws, so that the transverse size of the bracket is conveniently adjusted, and the hanging formwork structure is conveniently suitable for post-cast strip cracks in different environments; and the practicability of the butterfly-shaped double-spiral type suspended formwork structure is improved.

According to the locatable basement area environment monitoring method based on the Internet of Things, Bluetooth mobile beacons are built in a plurality of monitoring modules, communication between receiving base stations in a basement is combined, and the angle between the Bluetooth mobile beacons and a receiving antenna of a data all-in-one machine can be accurately obtained through an AOA positioning algorithm; the position information of the Bluetooth mobile beacon is trimmed through an Atmann-Z model algorithm, the position information of the monitoring module can be accurately obtained, matching of environment monitoring of the monitoring module and the position information can be accurately obtained by combining the position of the monitoring module and data information collected by the monitoring module, and precise environment monitoring in a basement area is achieved.

The invention discloses a basement ventilation and smoke exhaust system and method based on digital management, and the method comprises the steps: constructing a digital twin architecture comprising a terminal layer, an edge layer and a cloud layer, and carrying out the real-time mapping and interaction of a physical system for basement ventilation and smoke exhaust and a virtual model; carrying out integrated monitoring on the terminal layer by utilizing multiple sensors, and collecting relevant data parameters of ventilation and smoke exhaust of the basement; and a high-integration-level edge computing gateway is adopted to preprocess the collected data. The regional controller adopts a dynamic Bayesian network to fuse the preprocessed multi-source data, and constructs a local environment state model; the edge layer utilizes a deep reinforcement learning algorithm and a digital twinborn model to simulate multiple scenes to carry out state real-time prediction, and generates an emergency plan library; and the cloud layer central server operates a double-track decision engine and performs adaptive adjustment in combination with a deterministic rule base and an adaptive deep reinforcement learning model, and the technical scheme of the invention realizes efficient and accurate ventilation and smoke exhaust cooperative control.

The invention relates to the technical field of monitoring and early warning, in particular to a basement concrete anti-seepage intelligent monitoring and early warning system which comprises a node monitoring module, a rate screening and judging module, a chain type activation module, an early warning layering module and an information pushing module. According to the method, sudden change nodes are screened through trigger threshold values, sudden change moments are recorded, a chain type conduction path is judged and triggered in combination with node three-dimensional coordinates and Euclidean distance, a space leakage diffusion path meeting response conditions is constructed step by step, meanwhile, periodic continuous statistics is conducted on node humidity states, and early warning time intervals are matched; the spatial positions, the triggering time and the grade information of the risk nodes at the second level or above are pushed to a control center in a structured mode, and space-time positioning, diffusion trend recognition, risk grade layering and early warning response data closed-loop transmission of the water seepage sudden change state are achieved; the dynamic identification capability and the response accuracy of the concrete leakage risk are improved, and the tracking processing effect of an abnormal diffusion mechanism is enhanced.

The utility model relates to a section contraction type column foot of a basement with steel columns inserted downwards. The section contraction type column foot comprises an upper steel column, an upper steel-reinforced concrete column, a variable-section section and a lower steel-reinforced concrete column from top to bottom. The size of the variable cross-section section is gradually reduced from top to bottom, the section is closed when the column foot is inserted into a basement top plate by the depth of 2.5 b (b is the side length of the bottom face of the upper steel column), and the upper section and the lower section of the steel reinforced concrete column and the periphery of the variable cross-section section are matched and formed through concrete pouring. Compared with the prior art, the sectional area of the column foot is reasonably shrunk, the size and the number of basement parking spaces are increased, and meanwhile the structural stress and construction requirements are met; in addition, the beam top elevations at the two ends of the column foot can be inconsistent, the adaptability is wide, and different building functions and spatial layouts can be met.

The invention relates to the technical field of concrete detection, in particular to a concrete hardness detection device for concrete, which comprises a high-pressure sealed cabin mounted at the upper end of a base, a cabin door is mounted on one side of the high-pressure sealed cabin, a drainage pipe is connected to one end of the high-pressure sealed cabin, and a supporting seat is mounted at the center in the base. A plurality of groups of through holes are formed in the surface of the supporting seat, a first pressing plate is slidably arranged at the upper end of the supporting seat, one end of the first pressing plate is connected with a second pressing plate, and a sliding seat is slidably arranged at the lower end of the second pressing plate. The real stress state of the concrete in humid and high-temperature environments such as basements and high-temperature workshops is reproduced, so that the detection result has more engineering reference significance, and meanwhile, the corresponding compression resistance limit of the concrete plate in the corrosion state can be more accurately detected through the combination test of the corrosion environment and gradually increased pressure.

The invention provides an advanced water stop construction method for a post-cast strip of an underground garage. The advanced water stop construction method comprises the following steps: S1, positioning and paying off the post-cast strip; s2, mounting a steel plate water stop belt; s3, an advanced water stop mold is installed; s4, special-shaped water stop bolts are installed; s5, the formwork is closed and reinforced; s6, concrete pouring; the basement exterior wall main body structure concrete is poured for the first time, the post-cast strip shrinkage compensation concrete is poured after maintenance is conducted for 45 days, the strength grade is improved by one grade and is larger than or equal to C35, and the anti-permeability grade is improved by P6-P8; s7, waterproof treatment is conducted, construction is conducted through a double-layer SBS waterproof coiled material full-bonding method, the lap joint length is larger than or equal to 100 mm, and internal and external corners are subjected to arc treatment with the R equal to 50 mm; and S8, quality detection is conducted, capillary crystalline waterproof paint is adopted for reinforcing treatment after forming, a 24-hour closed water test is conducted, and the leakage point is smaller than or equal to 0.5 / 100 m. The installation structure is optimized, the installation speed can be greatly increased, and the construction period is shortened.

The utility model relates to the technical field of constructional engineering, in particular to a basement anti-floating anchor rod construction waterproof structure which is implemented on a soil construction layer and comprises a concrete cushion layer, a concrete waterproof cushion layer, a waterproof roll layer, a concrete protection layer, anchor rod holes, anchor rod sets and a certain number of stirrups. The anchor rod group sequentially penetrates through the concrete protection layer, the waterproof roll layer, the concrete waterproof cushion layer and the concrete cushion layer from top to bottom, the bottom end of the anchor rod group is arranged in the anchor rod hole, and the stirrup is arranged in the anchor rod hole; according to the utility model, leakage of the bottom plate at the anchor rod part can be avoided; the defects of large human influence factors and the like are overcome; operation is simple, and the construction period can be shortened; the cost and the labor cost are saved; environmental pollution is reduced, and construction cost is reduced; the anti-floating anchor rod waterproof construction method is suitable for anti-floating anchor rod waterproof construction of buildings or structures which are large in building size, deep in foundation burying, small in number of building layers, high in waterproof grade requirement and insufficient in structure self-weight to resist buoyancy on underground water.

The invention discloses a basement bottom plate post-cast strip waterproof construction method and structure. The method comprises the steps that a basement bottom plate foundation and a post-cast strip downwards-concave foundation are excavated; concrete cushion layer pouring is conducted, and a basement bottom plate concrete cushion layer and a post-cast strip downward-concave type deformation buffer strip are formed; the basement bottom plate concrete cushion layer is subjected to surface treatment, so that the basement bottom plate concrete cushion layer is kept flat and dry; waterproof construction is conducted on the basement bottom plate concrete cushion layer and the surface layer of the post-pouring cushion layer; reinforcing steel bars of a basement bottom plate and a post-cast strip are bound, and meanwhile a water stop strip steel plate is installed; a basement bottom plate is poured, and then concrete curing is conducted; an advanced water stop structure is arranged at the intersection of the post-cast strip pouring cavity and the post-cast strip; an advanced water stop structure is arranged at the intersection of the post-cast strip pouring cavity and the post-cast strip; concrete structures on the two sides of the post-cast strip are subjected to roughening treatment and coated with a cement-based permeable crystallization type waterproof coating, and concrete pouring forming is adopted. According to the construction method, water accumulation at the bottom of the post-cast strip and cracking of the structure are avoided.

The invention provides a basement outer wall joint position anti-seepage device which comprises basement outer walls and further comprises an elastic rubber water stop piece arranged between the basement outer walls and used for covering a joint and compensating deformation of the joint. The strip-shaped fixing piece is used for fixing the elastic rubber water stop piece on a base layer on one side of a joint through a fastener; a water collecting opening of the funnel-shaped water collector faces the elastic rubber water stop piece; the drainage pipe is connected with a water outlet of the funnel-shaped water collector; the elastic rubber water stop piece, the strip-shaped fixing piece and the funnel-shaped water collector are connected into an integral prefabricated assembly in a bonding mode. According to the waterproof structure, the fundamental problems of'stopping but not draining and only blocking but not dredging 'in a traditional basement outer wall joint waterproof technology are solved, and the industrial defects that an existing water stop belt is difficult to adapt to joint deformation and prone to failure and tearing, and a waterproof layer is damaged due to water pressure accumulation caused by the fact that leaked water cannot be actively guided and drained are effectively overcome.

The utility model provides a drainage structure of an expansion joint zone of a basement top plate, which is characterized in that a strip-shaped convex part is horizontally arranged along the front-back direction, is provided with a drainage channel along the front-back direction, is positioned between a front frame beam and a rear frame beam and below the basement top plate, and is respectively connected with the strip-shaped convex part and the drainage channel; the bottom of the groove is vertically provided with a long-strip-shaped expansion joint, the long-strip-shaped expansion joint extends in the front-back direction, further extends downwards into the top of the long-strip-shaped convex part and is communicated with the drainage channel, the protective cover plate is horizontally arranged and arranged at the bottom of the groove in the front-back direction to be used for covering the expansion joint and sealing factice to fill the joint, and the drainage pipe is located below the long-strip-shaped convex part. One end is inserted into the bottom of the strip-shaped convex part and is communicated with the drainage channel, and the other end is communicated with a basement sump. The basement roof can be prevented from cracking through the expansion joint structure, meanwhile, seepage water of the expansion joint structure can be drained to a basement sump through the drainage structure, leakage is prevented, and structural safety is guaranteed.

The utility model relates to the technical field of building construction, in particular to a basement external tower crane enclosure and rainproof structure which comprises a tower crane foundation and a tower crane standard knot, retaining walls are built above the tower crane foundation, the top of each retaining wall is higher than the natural ground, and the retaining walls are connected end to end and arranged on the periphery of the tower crane standard knot in a barrel surrounding mode. The retaining wall comprises a masonry layer and a concrete ring beam layer which are arranged at an interval; a blocking cover is arranged above the concrete ring beam layer at the top of the retaining wall; by means of the stress characteristic of a barreled structure of the retaining wall, it is guaranteed that the retaining wall cannot be unstable and damaged when soil is backfilled on the outer side, after basement construction is completed, fat groove backfilling in the area outside the retaining wall can be rapidly conducted, and after backfilling is conducted to the natural ground height, a construction road between the natural ground and a basement top plate is formed; and other on-site plane arrangements are not influenced.

The invention relates to the technical field of settlement post-cast strips, in particular to a pre-closed advanced water stop grouting device and method.The pre-closed advanced water stop grouting device comprises a basement top plate, a bottom plate, a cover plate and a grouting sleeve and further comprises a self-adaptive adjusting assembly; the self-adaptive adjusting assembly comprises an inner cylinder, an outer cylinder, a spring, a sealing ring and a pre-tightening force adjusting component, and when the building body settles, the cover plate descends to drive the outer cylinder to descend, and then the spring is extruded; the springs on the two sides generate reverse buffering force after being compressed, the force is transmitted to the cover plate through the outer cylinder, the internal stress of the cover plate caused by differential settlement is effectively counteracted, and it is avoided that a sealing structure at the joint of the cover plate and a basement top plate cracks due to rigid pulling; and after the settlement is stable, pressure grouting is performed through the grouting sleeve, so that the problems of cracking of the cover plate and failure of sealing structures such as a sealant and a waterproof coiled material due to rigid pulling are solved.

The invention belongs to the field of urban renewal construction, and relates to a method for adjusting elevation and landing in place in building translation construction. In the process that a building returns and resets to a newly-built basement top plate, firstly, a temporary platform composed of a heightening steel beam and a heightening steel cushion block is laid on the newly-built basement top plate in advance so as to solve the height difference problem existing between the newly-built basement top plate and a translation rail. Secondly, triangular haunching plates are additionally arranged at the corners of the wall clamping beams for supporting the building; and a landing jack is directly arranged below the haunching plate. By means of the arrangement mode, the eccentric bending moment borne by the underpinning structure is greatly reduced, and absolute safety in the landing process is ensured. And finally, a set of repeatable standardized circulating steps is designed, and the effect that the existing building is always reliably supported in the landing process is achieved. The invention aims to overcome the defects in the prior art, and provides the building translation landing method which is safe to operate, accurate to control and capable of effectively coordinating the foundation height difference and optimizing the landing stress path.

The present invention discloses a large-scale basement waterproof construction integrated structure based on BIM, comprising a floor, side walls arranged around the floor, multiple layers of waterproofing provided inside the floor and side walls, water troughs provided near the side walls, isolation mechanisms provided at the corners of the water troughs, a drain pipe connected to the isolation mechanism, a water pump installed at the other end of the drain pipe, a top plate connected to the upper end of each side wall, an auxiliary wall fixedly provided on the top plate, an inclined plate arranged obliquely between the auxiliary wall and the top plate, the edges of the inclined plate coated with waterproof glue. This structure installs an inclined plate between the top plate and the auxiliary wall, converting the right-angled side into an inclined side, thereby effectively preventing water accumulation in the upper end gap, and providing water troughs around the floor, the inclined plates guiding water into the arc-shaped troughs, the water in the arc-shaped troughs entering the troughs through connecting pipes, and then being discharged outward through the drain pipes.

The basement outer wall crack controllable induction structure device disclosed by the utility model has the advantages that the L-shaped wall-hanging frame and the side frame are combined and fixed, stable constraint is formed on the wall body, the crack is guided to generate in the preset area, and the crack direction is accurately controlled through the angle adjustment of the crack induction mechanism.

The utility model relates to the technical field of building waterproof engineering, and discloses a basement waterproof impervious device which comprises a building body, a wall body is fixedly connected to the upper surface of the building body, two waterproof layers are fixedly connected to the outer surface of the wall body, the wall body is located between the two waterproof layers, and a first waterproof plate is arranged on the outer surface of one waterproof layer. According to the waterproof anti-seepage device for the basement, through the action among the first butt-joint plate, the second butt-joint plate and the sealing rubber strip, after the first butt-joint plate and the second butt-joint plate are spliced, the first clamping groove and the second clamping groove coincide, the sealing rubber strip is located between the first clamping groove and the second clamping groove, and under blocking of the multiple second clamping grooves, the waterproof anti-seepage effect is achieved. Through the arrangement of the waterproof layer, the problem of water seepage generated by the joint when the first waterproof plate and the second waterproof plate are spliced can be effectively solved, so that the waterproof and anti-seepage performance of the basement is improved, and through the arrangement of the waterproof layer, the surface of the wall body can be subjected to waterproof treatment, so that the waterproof performance of the basement is further improved.

This invention discloses a construction structure for the rapid installation of basement escalators under complex conditions. The structure includes an underground space, a "gate"-shaped prefabricated bracket fixed to the top of a concrete roof slab, an electric hoist installed on one side of an underground shear wall, the hoist being connected to a first chain passing through the "gate"-shaped prefabricated bracket and the escalator installation hole, a pulley system hoisted onto the "gate"-shaped prefabricated bracket, the pulley system being connected to a second chain passing through the escalator installation hole, and a universal wheel sliding plate at the bottom of the escalator. This invention also discloses a construction method for the rapid installation of basement escalators under complex conditions, including: 1. fixing the "gate"-shaped prefabricated bracket with guy ropes; 2. placing the universal wheel sliding plate at the bottom of the rear end of the escalator; 3. installing the electric hoist and the first chain on the underground shear wall; 4. simultaneously releasing the pulley system while the electric hoist pulls the escalator forward; S5. the escalator is installed in place. This invention solves the problems of lack of cranes and limited installation workspace in basements, and can be widely applied in underground construction.

The application discloses a basement cold storage pool construction method and relates to the technical field of pool construction, which comprises the following steps: S1, installation and connection of water distribution pipelines in the water storage pool; S2, suspension of the water distributor on the top floor in the water storage pool through a lead screw and support of the water distributor through support angle steels; S3, laying of drainage plates on the original concrete ground of the water storage pool and laying of a reinforced concrete layer on the drainage plates; S4, cleaning of the reinforced concrete layer in the water storage pool, brushing of waterproof paint on the reinforced concrete layer and construction of an adhesive layer; and S5, construction of a heat insulation layer on the top of the water storage pool. The application has the effect of reducing power use during peak periods.

The invention discloses a seepage control and plugging method for external wall water leakage, and relates to the technical field of building waterproofness, the method comprises the following steps: draining accumulated water in a basement through a water suction pump, preliminarily plugging a severely leaked area, and removing laitance, sludge and a putty layer on a wall surface until a base layer red brick or concrete wall body is exposed; sequentially performing multi-layer waterproof construction treatment on the cleaned wall surface, and forming an integral waterproof layer which is internally and externally combined, permeates layer by layer and enhances adhesive force on the downstream surface through a waterproof material; according to the seepage control and plugging method for external wall water leakage, the seepage resistance, the sealing performance and the adhesive force of the whole structure are remarkably improved, capillary pores and micro cracks are effectively plugged, comprehensive blocking of a water seepage path is achieved, operation can be completely conducted on the inner side of a basement, namely the downstream face of the external wall, earthwork on the outer side of a wall body does not need to be excavated or an external narrow area does not need to be entered, and operation is convenient. The problem that leakage cannot be repaired in a closed environment through a traditional front waterproof method is effectively solved.

The invention relates to the technical field of building structure construction equipment, in particular to a basement bottom plate pile head waterproof construction device which comprises a supporting part positioned and fixed to the top of a pile head, a supporting frame fixedly installed at the top of the supporting part, and a main shaft frame rotationally installed in the middle of the top of the supporting frame. A gear ring is fixedly installed at the top of the supporting frame and is concentric with the main shaft frame, a gear shaft meshed with the gear ring is rotationally installed in the main shaft frame, a supporting arm part is fixedly installed in the middle of the end face of the gear shaft, and a driving disc is fixedly installed at the end of the supporting arm part. A feeding part used for conveying a flexible waterproof material is obliquely arranged under the supporting arm part, the feeding part comprises a positioning frame directly and fixedly connected with the supporting arm part, an auxiliary disc is arranged at the position, located under the driving disc, of one side of the positioning frame, and a feeding pipe is fixedly installed at the bottom of the positioning frame through a positioning cylinder; the construction waterproof effect of the basement bottom plate pile head is effectively improved.

To improve estimation accuracy of an underground structure.SOLUTION: In the underground structure estimation method, micromotion of the soil at observation points P1 to P6 is observed by a micromotion array 10, and at least an S-wave speed Vs1 in a base layer 1 and a depth H to an upper surface 1a of the base layer 1 are calculated by inverse analysis using a relationship between a frequency and a phase speed of a wave propagating through the soil G from the observed micromotion, thereby estimating an underground structure at the observation points P1 to P6. In the subsurface structure estimation method, predetermined observation points among the plurality of observation points P1 to P6 are grouped as group observation points Pg, inverse analysis is performed assuming that the S-wave velocities Vs1 in the base layer 1 at all the grouped group observation points Pg are the same, and the S-wave velocities Vs1 in the base layer 1 and the depth H to the upper surface 1a of the base layer 1 at each of the group observation points Pg are calculated.SELECTED DRAWING: Figure 1

The utility model relates to a triangular temporary backrest structure in a basement under construction, which is positioned on a bottom plate constructed underground and comprises a bracket, a vertical support, a transverse support and an inclined support, the vertical support and the transverse support are located on the same plane and are perpendicular to a line of a jacking pipe in the jacking pipe starting equipment. A gap is formed between the transverse support and the bottom plate; the inclined strut is provided with a first end and a second end, and the first end of the inclined strut is arranged at the intersection of the vertical support and the transverse support; the second end of the inclined strut is arranged on the bottom plate through the bracket; and the vertical support stands on the bottom plate. The pipe jacking device can meet the pipe jacking construction process requirement, the requirement for a construction site is small, and resource cost is saved.