55 results about "Construction surveying" patented technology

The invention discloses a construction method of long sleeper buried ballastless turnouts with large size of a passenger transport dedicated line, which comprises: constructing turnouts region base concrete, surveying and setting out of the construction, binding rail bed plate bottom reinforcement, installing a turnout translation trolley, hanging turnout rail sections and unloading, pushing the translation trolley in the position and connecting turnout, coarsely adjusting the turnout, installing a regulation stent and dissembling the translation trolley, binding rail bed plate reinforcement and installing a formwork, fine adjusting and positioning the turnout, pouring rail bed plate concrete, adjusting the formwork and dissembling the stent, welding the turnout steel rail and dispersing stress and closing treatments. The method of the invention has the advantages that the installed long sleeper buried ballastless steel rail panel of the passenger transportation dedicated line is stable and free from deformation; the rail concrete meets the requirements of China made rail circuit transmission; the rail is linear and is provided with high regularity and high accuracy of construction surveying and controlling; steel rail welding joint is of good quality and high regularity.

The invention discloses a lifting adjusting device for construction surveying, and relates to the technical field of building surveying. The lifting adjusting device comprises a supporting frame; anda driving mechanism is connected with a lifting plate for adjusting the supporting frame through vertical sliding through a lifting mechanism, a supporting table driven by a transverse adjusting mechanism is transversely arranged on the lifting plate in a sliding mode, and the supporting table is in transmission connection with a clamping mechanism used for clamping a surveying instrument througha steering mechanism. According to the lifting adjusting device for construction surveying, the lifting mechanism can drive the lifting plate to adjust the upper and lower height positions, so that the surveying instrument on the clamping mechanism can be adjusted in height; the transverse adjusting mechanism is arranged to achieve the transverse adjusting effect of the clamping mechanism, the clamping mechanism is arranged to achieve a stable clamping effect on the surveying instrument, the stability of the surveying process is ensured, and the surveying effect is improved; and the steering mechanism can drive a bracket and the surveying instrument to adjust the angle, so that the adjusting requirement of the surveying instrument during building surveying is greatly facilitated, and the building surveying is efficient and stable.

The invention discloses a top-down method secondary lining construction method. The construction method comprises the following steps of construction preparation, construction surveying, trolley stationing, concrete pouring, mold disassembly, tunnel lining maintenance and lining back grouting, wherein during the concrete pouring, starting from an inverted arch in the excavating face direction in the tunnel, pushing the trolley and pouring secondary lining concrete along the upslope direction, when the secondary lining concrete is reversely poured to connect secondary lining concrete with a completely poured front segment, then pushing the trolley to the inverted arch in the excavating face direction to perform secondary lining inversely, and conducting the secondary lining construction of the next circulation section. The construction method disclosed by the invention has the beneficial effects that the secondary lining is constructed by a top-down method, the concrete flows to the downslope direction during pouring as the concrete is under the action of self gravity, the concrete compactness at a secondary lining joint can be increased, the concrete pouring quality is guaranteed, meanwhile, when the top-down method is used for construction, the previously poured secondary lining is in the downslope direction of the newly poured secondary lining, and can play a part in supporting a model board trolley so as to prevent the trolley from sliding downwards, and the safety of the secondary lining construction is guaranteed.

The invention discloses a mounting method of a water injection and natural pipe sinking river-crossing pipeline. The mounting method comprises the following steps that construction surveying and positioning are conducted; river bottom foundation pits are excavated to form a groove; the river-crossing pipeline is welded on a river beach, and weld joints are reinforced; the river-crossing pipeline is subjected to first-time water injection and pressure testing on a shore; the river-crossing pipeline is put into a river and floated and pulled in place; the river-crossing pipeline is filled with water and centralized; the river-crossing pipeline is subjected to positioning recheck; the river-crossing pipeline is naturally sunken into the groove; the river-crossing pipeline is subjected to second-time water injection and pipeline pressure testing; after pressure testing is qualified, cyclopean concrete piers are poured for last fixing; a riverbed is restored; and acceptance check is conducted. The natural pipe sinking technology is adopted, and pipe interior water injection is completed through mutual cooperation of water inlets, air exhausts, openable valves and the like which are formed / arranged in / at the two ends of the pipeline; and the water injection quantity is manually controlled, the sum of the weight of injected water and the pipeline is controlled to be equal to the buoyancy of the pipeline, so that the pipeline is naturally sunken, the accuracy of the pipe sinking position can be guaranteed, and large-height-difference large-span river-crossing pipeline mounting is achieved.

PCT No. PCT / EP96 / 03577 Sec. 371 Date Feb. 19, 1998 Sec. 102(e) Date Feb. 19, 1998 PCT Filed Aug. 13, 1996 PCT Pub. No. WO97 / 08572 PCT Pub. Date Mar. 6, 1997The invention relates to an arrangement for retroreflection of an optical ray using triple prisms. Six to ten triple prisms (1, 2, 3, 131, 132, 133) arm provided with triangular light entry surfaces, wherein the side faces of adjacent triple prisms are in contact. This results in continuous retroreflection at a high level of intensity for one angle area, of 360 DEG . When used in particular in geodesy or in construction surveying, this all-round reflector provides a high degree of measurement accuracy for angles and distances from any direction on which a bearing is taken. Alignment towards a surveying instrument is therefore not necessary. Measurement of short distances is also definite and reliable. The all-round reflector is particularly advantageous for automatic surveying, since, irrespective of its orientation, it can be automatically tracked by a motorised surveying instrument.

The invention discloses a cast-in-place construction process for an inter-pile board wall between slide-resistant piles. The inter-pile board wall to be constructed is located between the two adjacent slide-resistant piles. The process includes the steps that firstly, construction surveying is performed; secondly, construction of the slide-resistant piles is performed, wherein the two slide-resistant piles are constructed respectively; thirdly, excavation of inter-pile soil is performed, wherein the soil between the two slide-resistant piles is excavated in multiple layers from top to bottom; fourthly, an inverted filter is stacked on the rear side of the inter-pile board wall to be constructed; fifthly, cast-in-place construction of the inter-pile board wall is performed, wherein a steel reinforcement framework formed by splicing multiple steel reinforcement cages from bottom to top is arranged in the inter-pile board wall to be constructed, multiple drainage hole reserved tubes are arranged in each steel reinforcement cage, and the construction process of the inter-pile board wall to be constructed includes the steps of steel reinforcement framework binding, drainage hole reserved tube laying, formwork erection and concrete pouring. The steps of the process are simple, and the process is reasonable in design, convenient to implement, high in construction efficiency, good in construction effect and capable of solving various problems existing in an existing cast-in-place construction method for the inter-pile board wall between the slide-resistant piles.

The invention belongs to the field of engineering surveying experiment teaching, and provides a method for establishing a simulation platform for engineering surveying experiment teaching, which comprises the following steps of S1, benchmark establishment: establishing a surveying reference control network, including a plane control network and an elevation control network, at the location of a semi-realistic simulation area,; S2, semi-realistic simulation area selection: in combination with the distribution of school ground objects, selecting an area similar to actual production to establishthree core semi-realistic areas including a digital mapping simulation area, an engineering lofting simulation area, a deformation monitoring simulation area, and two expansion modules including a highway curve ranging simulation area and a tunnel / mine laneway through simulation area; S3, basic data acquisition; and S4, by contrast to semi-realistic simulation area module, establishing a desktop virtual experimental platform corresponding to a semi-realistic simulation experiment. The method improves the experimental teaching effect of engineering surveying and can be widely applied to the field of engineering surveying experiment teaching.

Installing method of the integral sleeve of a kind of apparatus foundation T -bolt (diameter <= 48mm) includes the following steps--a: embedded software b: Line set of reference bus based on the installation of equipment foundation. c: The sub line is installed based on the center location of the sleeve. d: The support frame of T-bolt sleeve and eT-bolt sleeve is installed , tested and retested. The integral sleeve of installing method of T-bolt whose diameter is <= 48mm has the advantage of being reasonable design of installing steps and convenient to operate. Two sets of fixed supporting systems, which are mutually independent, are installed, wherein, one set is used as line set of reference bus for construction surveying, the other is used for support frame to fix the sleeve. Two sets of supporting systems are used to ensure the installation accuracy and measuring accuracy of the sleeve and the embedded accuracy of the T-bolt sleeve. Also the advantage of two sets fixed supporting systems is that the verticality of the sleeve installation is up to <=L / 1000, that is, the levelness of anchoring surface is up to <=1 / 1000and the center deviation of sleeve is limited to 5mm.

The invention discloses a construction method for building a linear accelerator machine room in a confined space of a hospital basement. The construction method for building the linear accelerator machine room in the confined space of the hospital basement comprises the following steps of a, construction surveying, positioning and paying off; b, carrying out anchor rod static pressure pile drivingconstruction; c, disassembling a floorslab, and reinforcing a top plate original structure beam; d, carrying out reinforcing bar engineering construction; e, carrying out template engineering construction; f, carrying out concrete engineering construction, maintaining and monitoring; and g, laying a lead plate anti-radiation layer. According to the construction method, an existing building spaceresource of the hospital is sufficiently utilized, and the linear accelerator machine room is built in the confined space of an original building; the top plate of the linear accelerator machine roombuilt by the technology adopts heavier baryte concrete materials, so that the weight and the strength of concrete are ensured to meet the radiation protection requirement; and in addition, a lead plate with a certain thickness is laid on a board of a main radiation area, so that an anti-radiation function is increased, the plate thickness requirement of the top plate of the machine room can be reduced, the problem that the top plate of the machine room is limited by the original floor height is effectively solved, and the use function is satisfied.

The invention discloses a synchronous construction method for chimney lining external concrete. A working procedure for constructing a steel bar concrete chimney cylinder body comprises the following steps of: carrying out construction surveying; constructing a heat isolation layer (6) and a fireproof brick lining (7); binding steel bars on a concrete cylinder body (4); constructing an external folding die (2); and pouring the concrete cylinder body (4). By a synchronous construction process, concrete is poured among the heat isolation layer, the fireproof brick lining and an external template, so that the construction quality is high, the construction speed is high, and the construction safety is realized; the synchronous construction method is economic, practical and simple and convenient to operate; and the construction expense can be saved, and the construction cost can be reduced. For the same chimney, compared with the construction period of a sliding die, the construction period of the folding die is shortened by about 30 percent, so that the project construction cost is saved by about 20 percent; the synchronous construction method is remarkable in comprehensive technological economy and social benefit and suitable for construction of steel bar concrete chimney cylinder body linings with the diameter ranging from 30m to 80m and external folding dies.

The invention discloses an anchor mooring construction surveying method for a contact network in a tunnel. The contact network to be constructed is divided into a plurality of anchoring sections, wherein an anchoring section joint is arranged between two adjacent anchoring sections, and comprises an anchor mooring device, the anchor mooring device comprises a supporting device, a contact suspending device and a compensating device, and the supporting device is an anchoring arm fixed on the wall of the tunnel. An anchor mooring device is installed by adopting the following steps: installing the supporting device, namely, installing the anchoring arm of the currently installed anchor mooring device; and 2, installing the compensating device, namely, when the compensating device is installed, performing surveying and positioning by adopting a three-dimensional surveying rule, wherein the compensating device is installed by adopting the following processes, namely installing a front side pulley, laying the three-dimensional surveying rule, positioning a guide pulley and installing a compensating rope and a compensating pulley. The anchor mooring construction surveying method is simple, reasonable in design, relatively low in input cost, convenient to realize, good in use effect, and capable of solving the problems of inconvenience in use and operation, large workload, relatively high measurement difficulty, relatively large measurement errors, and the like in a conventional measurement method.

The invention provides a method for digitalizing road design data and assisting construction. The method comprises the following steps: (1) designing a road into a road data structure form; step (2),forming road data display based on a Qt graph technology; step (3), based on the definition of a road in engineering measurement, calculating the mutual conversion of an engineering coordinate and a road mileage offset; step (4), by means of definition of the vertical curve and the cross section in the road structure, elevation calculation of any point of a road and earthwork volume calculation ofroad construction are obtained, a road data structure is designed through engineering surveying knowledge, road display is achieved through the Qt graph technology based on the road data structure, and reading, rendering and storage of road data are achieved. And the engineering coordinates and the road mileage offset are mutually converted to realize calculation of the road filling and digging amount.

The invention provides an on-site surveying device based on construction engineering cost, relates to the technical field of construction surveying equipment, and solves the problems that although an existing device can realize movement and position change of surveying equipment through a vehicle body, time is wasted to brake and fix the vehicle body when the vehicle body stops each time, and the vehicle body cannot be automatically locked after the vehicle body stops through structural improvement. The on-site surveying device based on construction engineering cost comprises a vehicle body 1, the vehicle body is placed on the ground, and a mounting seat is mounted on the vehicle body; and a mounting part is mounted on the mounting seat, and an observation instrument is mounted on the mounting part. Four auxiliary blocks B are fixedly connected to a frame body through bolts, and the four auxiliary blocks B jointly form a collision protection structure of clamping protrusions A, so that the collision probability of the clamping protrusions A can be reduced during placement.

The invention provides a dredging and measuring integrated sounding survey method for a grab dredger, which is used for solving problems of sea state restriction, poor timeliness of measured data andhigh cost brought by the traditional measurement method. A dredging and measuring integrated method for alternatively performing dredging construction and sounding survey is provided by fully utilizing construction characteristics of the grab dredger. Sweeping survey of underwater topography in corresponding construction areas is completed in ship grab construction and dumping clearances, so thatsounding survey of the construction areas is realized. The survey operation can be performed under construction conditions of the grab dredger, the measurement accuracy and coverage area meet construction surveying requirements, and synchronous measurement in the construction process is realized. Measurement in the construction area is gridded, the grid data is subjected to multidimensional storage, and the multidimensional data is processed by adopting an artificial intelligence algorithm so as to obtain measured data in the construction area before dredging, during dredging and after dredging. Therefore, the dredging construction efficiency and quality are improved, and the operating cost of the measurement operation is saved. The ship body structure and construction method of a dipper dredger are similar to those of the grab dredger, so that the dredging and measuring integrated sounding survey method disclosed by the invention can be applied to the dipper dredger.

The invention provides a positioning device for bridge decorative plates. The positioning device comprises an operation platform and a positioning mechanism, wherein the operation platform is arrangedon a pier abutment of a bridge and used for supporting the positioning mechanism, and a guide rail is arranged on the operation platform and used for guiding the positioning mechanism; and the positioning mechanism moves on the operation platform along the guide rail and is used for positioning the decorative plates on the bridge. According to the positioning device for the bridge decorative plates, the guide rail arranged on the operation platform is used for guiding the positioning mechanism, so that the positioning mechanism moves on the operation platform along the guide rail; and the positioning mechanism is used for positioning the decorative plates arranged in the circumferential direction of the bridge, so that the positioning mechanism can position the decorative plates while moving, then the installation of the decorative plates is realized, the process of position finding of the positioning mechanism is omitted, the positioning process of construction surveying and settingout is simplified, and the precision and accuracy of the position of the positioning mechanism are ensured.

The invention discloses a rapid temporary cofferdam construction method. A cofferdam is formed by sequentially connecting a plurality of cofferdam piles. The method comprises the following steps that1, the size and the depth of the bottom, embedded into silt, of the cofferdam are determined according to the fracture size and depth of the cofferdam between adjacent lake parks at a construction site, and the number and the size of the cofferdam piles are determined according to the size of the cofferdam, and according to a determined construction position of the cofferdam, and a water construction surveying and setting-out method is adopted for surveying and setting-out on the cofferdam; 2, the plurality of cofferdam piles are inserted, driven and assembled one by one along a surveying andsetting-out line in the step 1, and backfill cavities are formed between every two adjacent cofferdam piles through combination; 3, the backfill cavities are internally refilled with silt; 4, water inthe lake parks is pumped out through a water pump, and silt in the lake parks is cleared; and 5, the cofferdam is removed. The construction method is simple, the construction efficiency is high, theconstruction difficulty is small, the cost investment is small, and the cofferdam piles can be recycled and reused.

The invention discloses a grooving method for underground water pollution stop control. The grooving method comprises the steps of: (S101) construction surveying and paying off; (S102) field leveling;(S103) drilling of all support steel plate piles into a rock layer; (S104) pavement of roadbed boxes at the upper parts of the support steel plate piles; (S105) mechanical grooving at the side partsof the support steel plate piles; (S106) installation of steel support frames at the grooved parts; (S107) lifting of the steel support frames; (S108) pavement of flexible permeation preventing materials in the grooved parts for filling; and (S109) drawing of the support steel plate piles. The grooving method has the following beneficial effects: in places with sudden pollution accidents, shorterconstruction period, narrow construction range or other special conditions, when the grooving pollution stop control can be performed in the places for the ecological environment pollution problem, the grooving can be performed under the precondition of not adopting a mud production system for wall protection by mud according to the steps of the method.

The invention discloses a measuring instrument for building constriction surveying and mapping in multiple environments. The measuring instrument for building constriction surveying and mapping in themultiple environments structurally comprises a surveying and mapping instrument, a positioning supporting disc, three foot stools, foot supports and fixed frames, the surveying and mapping instrumentis fixed to the upper end position of the positioning supporting disc, the three foot stools are in an equilateral triangle shape and distributed and fixed to the lower end position of the positioning supporting disc, the foot supports are arranged at the lower ends of the foot stools, and the foot stools are connected mutually through the fixed frames. According to the measuring instrument for building constriction surveying and mapping in the multiple environments, the foot supports arranged on the foot stools can be rotated and folded up and down, the foot supports are bent downwards whenfacing the cement ground, the ground is supported by the foot supports, the iron pickaxe tail ends of the foot stools are isolated from the cement ground so as to protect an iron pickaxe from being worn due to contact with the cement ground and face the oblique ground by adjusting the length of a middle shaft rod, it is ensured that the opening and closing degree of the foot stools always improvesthe measuring precision through the supporting of the fixed frames, when the iron pickaxe faces soil sandy ground, a material discharging groove adopting a thread shape is formed in the iron pickaxe,soil sand can be discharged through the material discharging groove when being inserted into the soil sandy ground, and the iron pickaxe is more conveniently inserted into the ground.

The invention belongs to technical field of pipeline renewal construction, and discloses a pipe expanding type pipeline renewal construction method increasing stress relief holes. The method includesthe steps of construction preparation, construction surveying and setting out and on-site geophysical prospecting, setting of positioning observation points of road surface soil inlet and outlet points and surrounding pipelines, preparatory work before drilling, test drilling, drilling of the stress relief holes, old pipeline bursting extrusion, sending rack installation and dragging back pipelineracking, pipeline dragging back, slip casting and backfilling of the stress relief holes, on-site cleaning and physiognomy restoration. According to the method, soil displacement can be effectively reduced, and damage to surrounding structures is reduced; traffic impacts are reduced, and social benefits are good; land uplift is not caused, and secondary construction is reduced; the expansion rateof a renewed pipe diameter is larger and the soil density limit is reduced; and the construction period can be effectively shortened, the labor input is reduced, and the work efficiency is improved.Compared with a traditional cut and cover method, a pipe jacking method and a traditional pipe expanding method, the pipe expanding type pipeline renewal construction method has obvious improvements in economic benefits and social benefits and has obvious technical advancement.

The invention discloses a stable type surveying and mapping support for bridge construction. The stable type surveying and mapping support comprises a box and a shrinkage rod which are detachably connected through a balance weight plate, a gasket is installed in the middle of the shrinkage rod, rotary buttons are arranged on the outer side of the gasket, and fixing ferrules are installed above the rotary buttons; cylinder sleeves are arranged on the outer sides of the fixing ferrules, a snap ring is fixedly installed on the outer side of the shrinkage rod through a connecting soft sheet in a sleeving manner, the fixing ferrules are provided with fixing rods and are detachably provided with fixed shrinkage rods in a connected manner, and positioning stabilizer blades are arranged below the fixed shrinkage rods; and circular cone feet are installed below the positioning stabilizer blades, a drawer is installed above the balance weight plate, a baffle is installed above the box, the lower portion of a switch is electrically connected with a power source through a wire, and a USB connector is installed on the outer side of the power source. The stable type surveying and mapping support for bridge construction is stable in structure, multiple in function, convenient to use and suitable for bridge construction surveying and mapping.

The invention discloses a construction project cost field surveying and mapping device. The construction project cost field surveying and mapping device comprises a surveying and mapping ruler, wherein first magnet clamping grooves are formed in the two sides of the bottom of the surveying and mapping ruler; first magnets are mounted on the inner sides of the first magnet clamping grooves and located on the side walls; a first ruler scale bar is arranged at the upper end of the surveying and mapping ruler; scales are arranged at the upper end of the first ruler scale bar; a second ruler scalebar is arranged at the lower end of the surveying and mapping ruler; and the upper end of the second ruler scale bar is provided with second scales. The construction engineering cost field surveying and mapping device has the beneficial effects that by arranging the first magnets and a sucker on the two sides of the surveying and mapping ruler respectively, the surveying and mapping ruler can be fixedly adsorbed on a wall surface or a metal plate, taking and placing is convenient, the utilization rate of the arm of a user can be reduced, therefore the teaching efficiency is increased; and drawing diversity can be increased by arranging a first combined type telescopic rod and a second combined type telescopic rod, and the construction surveying and mapping efficiency is improved.

The invention discloses an anchor rod construction process for ensuring safety and quality and relates to the technical field of construction. The problems of chip off-falling and continuous cavity collapse after face excavation are mainly solved. The anchor rod construction process comprises the following steps of S1 early-stage preparation of construction, including construction surveying and slurry preparation, S2 advanced small pipe construction, S3 face closing, S4 taking place of a drill jambo, S5 drilling, S6 hole position plugging, S7 grouting and reinforcement, S8 grouting parameter design, S9 execution of a grouting process, S10 execution of excavation operation, wherein the excavation operation is executed after grouting completion, and it is checked whether a slurry diffusion effect meets the purpose of reinforcing a surrounding rock. By adopting the anchor rod construction process, the problems of chip off-falling and continuous cavity collapse after face excavation can beeffectively solved, the potential safety hazards existing in a construction site are solved, the construction quality is effectively ensured, and the process is suitable for popularization.

The invention discloses a cast-in-place construction process for an inter-pile board wall between slide-resistant piles. The inter-pile board wall to be constructed is located between the two adjacent slide-resistant piles. The process includes the steps that firstly, construction surveying is performed; secondly, construction of the slide-resistant piles is performed, wherein the two slide-resistant piles are constructed respectively; thirdly, excavation of inter-pile soil is performed, wherein the soil between the two slide-resistant piles is excavated in multiple layers from top to bottom; fourthly, an inverted filter is stacked on the rear side of the inter-pile board wall to be constructed; fifthly, cast-in-place construction of the inter-pile board wall is performed, wherein a steel reinforcement framework formed by splicing multiple steel reinforcement cages from bottom to top is arranged in the inter-pile board wall to be constructed, multiple drainage hole reserved tubes are arranged in each steel reinforcement cage, and the construction process of the inter-pile board wall to be constructed includes the steps of steel reinforcement framework binding, drainage hole reserved tube laying, formwork erection and concrete pouring. The steps of the process are simple, and the process is reasonable in design, convenient to implement, high in construction efficiency, good in construction effect and capable of solving various problems existing in an existing cast-in-place construction method for the inter-pile board wall between the slide-resistant piles.

The invention discloses a construction surveying setting-out method based on BIM+ artificial intelligence, and belongs to the technical field of building construction. The construction surveying setting-out method based on the BIM+ artificial intelligence comprises the steps that 1, a three-dimensional BIM design model is established; 2, an accurate setting-out point position is directly output based on the BIM model; 3, before construction, an artificial intelligence surveying robot is adopted to carry out setting-out; 4, in the constriction, a three dimensional laser scanner is adopted to scan a structure, and actual constructing data is reversely obtained; 5, the actual constructing data is compared with the BIM design model, and the model is subjected to dynamic calibration; and 6, a calibration model is adopted to output the setting-out point position, and the setting-out is carried out by the artificial intelligence surveying robot. According to the construction surveying setting-out method based on the BIM+ artificial intelligence, the artificial intelligence surveying robot is adopted to carry out the setting-out, the accurate surveying setting-out data can be obtained, theerrors are reduced to a greater extent, and good social benefits and economic benefits are obtained.

The invention relates to a portable surveying and mapping pen used by construction surveying and mapping personnel. The portable surveying and mapping pen used by construction surveying and mapping personnel comprises a pen casing 1, a non-slip mat 2, and a fixing piece 3, wherein the pen casing 1 adopts a hollow structure with two ends opened, so as to be combined with other pens conveniently; the non-slip mat 2 is arranged inside the pen casing 1 and is opposite to the fixing piece 3, and is made of a non-slip material; a fastening mat 2 is mounted at the lower part of the fixing piece 3 and is opposite to the non-slip mat 2 in arrangement; after a pen is mounted inside, by tightening the fixing piece 3, that the pen is fixed inside can be ensured. When being used on a construction surveying and mapping site, the portable surveying and mapping pen can be combined with pens by surveying and mapping personnel according to needs, so as to be convenient to use in work.

The invention relates to the technical field of measuring, surveying and mapping accessory devices and particularly relates to an observation platform for construction surveying. The position of a mounting plate can be adjusted after a fixing plate is fixed to a wall surface without the need of punching the wall surface again, thus reducing early surveying steps, making operation simple and improving using reliability. The surveying orientation of a surveying instrument can be adjusted conveniently so that practicability is improved. The observation platform includes the fixing plate providedwith a plurality of first through holes and the mounting plate provided with a plurality of second through holes, and also includes a bottom plate, a supporting plate, a threaded bar, a threaded pipeand a first ball bearing. Front and rear sides of the left side wall of the fixing plate are provided with a front vertical dovetail groove and a rear vertical dovetail groove respectively. The frontand rear sides of the right end of the supporting plate are provided with a front dovetail sliding block and a rear dovetail sliding block respectively. The observation platform also includes a gear,a rotating shaft, an adjusting lead screw, a rectangular sliding block, a second ball bearing, a strip-shaped slot and a third ball bearing. The rear end of the rectangular sliding block is provided with a toothed structure.

The invention discloses a construction method of long sleeper buried ballastless turnouts with large size of a passenger transport dedicated line, which comprises: constructing turnouts region base concrete, surveying and setting out of the construction, binding rail bed plate bottom reinforcement, installing a turnout translation trolley, hanging turnout rail sections and unloading, pushing the translation trolley in the position and connecting turnout, coarsely adjusting the turnout, installing a regulation stent and dissembling the translation trolley, binding rail bed plate reinforcement and installing a formwork, fine adjusting and positioning the turnout, pouring rail bed plate concrete, adjusting the formwork and dissembling the stent, welding the turnout steel rail and dispersing stress and closing treatments. The method of the invention has the advantages that the installed long sleeper buried ballastless steel rail panel of the passenger transportation dedicated line is stable and free from deformation; the rail concrete meets the requirements of China made rail circuit transmission; the rail is linear and is provided with high regularity and high accuracy of construction surveying and controlling; steel rail welding joint is of good quality and high regularity.

The invention relates to the technical field of surveying apparatuses, in particular to a dustproof highway construction surveying apparatus, which comprises a box body and a dust suction pipe. The top end of the box body is rotationally connected with the dust suction pipe, an outer side of the dust suction pipe is fixedly connected with a fixing ring, the rear end surface of the fixing ring is rotationally connected with a rack, and the bottom end of the rack is rotationally connected with a rotating disk; the right end of the box body is fixedly connected with a casing, the rear end surfaceof an inner wall of the casing is fixedly connected with a motor, the distal end of a spindle of the motor is fixedly connected with a gear, and the bottom end of the gear is rotationally connected with a rotating wheel. According to the dustproof highway construction surveying apparatus, the rotating disk drives the rack to drive the fixing ring to rotate, so that the flying dust is convenientlyprocessed, the working efficiency is improved, the instrument pollution caused by dust can be avoided and at the same time the human health is protected; the apparatus has great economic benefits andwide market prospect, and is worthy of popularization and application.

The invention discloses a marker post for construction surveying and mapping, relating to the technical field of construction surveying and mapping. The marker post comprises a base, wherein a fixingcylinder is fixedly arranged at the center of the top surface of the base; a box body is fixedly arranged at the bottom end inside the fixing cylinder; a lifting mechanism is arranged inside the fixing cylinder; a post body runs through the inside of the fixing cylinder; a transparent box is connected with one end, far from the inside of the fixing cylinder, of the post body; and a rope is fixedlyconnected with the center of the top surface inside the transparent box. Whether the marker post is vertical or not can be found in time, and the marker post can be regulated, so that occurrence of errors can be effectively reduced, an alarm lamp can remind passengers or vehicles, and occurrence of risks can be avoided, and the marker post can be lifted, effectively regulated and used for surveying and mapping different constructions requiring measurement. The marker post is provided with a handle to facilitate carrying, and has a good regulating and carrying function.

The invention discloses road and bridge engineering construction surveying equipment which comprises a surveying main body and supporting legs, a measurer is arranged on the surveying main body, an eyepiece is arranged on the measurer, a control panel is arranged at the upper end of the surveying main body, and the control panel is located above the measurer. The road and bridge engineering construction surveying equipment belongs to the field of surveying equipment, a protection structure can achieve a dustproof effect, a light shielding plate in the protection structure can achieve a light shielding effect, the light shielding plate is matched with a side plate and other structures to achieve the light shielding effect, it is guaranteed that a display screen on a control panel can be clearly checked under sunlight irradiation, and the control panel is more convenient to use. The rotary protection frame can be overhung to achieve the further protection effect, the protection structure can sleeve the supporting rod when the surveying equipment is not used, potential safety hazards are reduced, and when the protection structure sleeves the supporting rod, the protection structure can achieve the supporting effect, and workers can have a rest midway when carrying the surveying equipment.