55 results about "Construction surveying" patented technology

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 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 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.