Linear measurement control method for multi-curved-surface distorted steel tower

A control method and linear measurement technology, which is applied in the field of bridge manufacturing, can solve the problems of multi-curved twisted steel towers that cannot be measured, and achieve the effects of simple measurement, good manufacturing accuracy, and high control

Active Publication Date: 2018-11-02
中铁宝桥(扬州)有限公司 +1
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Problems solved by technology

[0004] Purpose of the invention: The present invention provides a linear measurement control method for multi-curved twisted steel tow...
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Method used

[0020] According to the deviation value, the adjacent pre-assembled steel tower is adjusted...
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Abstract

The invention discloses a linear measurement control method for a multi-curved-surface distorted steel tower. The method comprises the following steps of (1) drawing a steel tower three-dimensional model to obtain a design steel tower 1:1 model; (2) selecting representative characteristic point three-dimensional data as a measurement control point on the model according to structural characteristics of steel tower sections; (3) establishing a construction measurement control net at a steel tower section or steel tower pre-assembly manufacturing site; (4) measuring the steel tower sections, fitting measurement data and three-dimensional model data of the steel tower sections, obtaining a deviation, and according to the deviation, adjusting the steel tower sections to meet design and standard requirements; (5) pre-assembling the steel tower sections, and adjusting the pre-assembled steel tower sections to meet the design and standard requirements; and (6) assembling the adjusted pre-assembled steel tower sections into the steel tower. According to the method, a traditional steel structure machining and manufacturing method based on auxiliary baseline drawing and steel disc ruler measurement is changed; the production efficiency and the measurement precision are improved; the labor cost is reduced; a basis can be provided for bridge location erection; and the convenience is provided for erection linear control of a bridge location erection monitoring unit.

Application Domain

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  • Linear measurement control method for multi-curved-surface distorted steel tower
  • Linear measurement control method for multi-curved-surface distorted steel tower
  • Linear measurement control method for multi-curved-surface distorted steel tower

Examples

  • Experimental program(1)
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Example Embodiment

[0016] Embodiment 1: The linear measurement control method of a multi-curved twisted steel tower according to the present invention, the specific steps are as follows:
[0017] Such as figure 1 As shown, the three-dimensional model is drawn to obtain the parameters of the steel tower model. Such as Figure 4 As shown, the steel tower section 1 constituting the steel tower includes a wall plate 101, a side wall plate 102, a diaphragm 103, a web unit 104 and the like. Such as image 3 As shown, according to the structural characteristics of the steel tower section, the point that is not easy to deform during hoisting and transportation on the top of the steel tower section wall plate can be selected as the steel tower section's centerline. The vertex is used as a representative feature point, image 3 The direction indicated by the middle arrow and the representative characteristic point that is finally selected in steel tower section 1. In addition, the steel tower section site is selected to establish a construction survey control network, and the foundation of the site is stable enough without excessive settlement.
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Description & Claims & Application Information

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