CN-224216087-U - Laser auxiliary measurement system for continuous rigid frame straight line cradle bridge

Abstract

The utility model discloses a laser auxiliary measurement system for a continuous rigid frame straight line basket bridge, which is characterized by comprising a laser direction indicator, a forced centering pile, a laser reflector plate and a telescopic adjusting rod, wherein the forced centering pile is embedded in the middle line of a No. 0 block of a main bridge, the laser direction indicator is arranged on the forced centering pile, and the laser direction indicator is connected with the forced centering pile by the telescopic adjusting rod and is used for adjusting the elevation position of the laser direction indicator. The traditional measurement mode can consume a large amount of manpower and occupy a large amount of time, and the construction efficiency of the main bridge section is low. Because of limited visual field, human error may occur during night measurement, and measurement accuracy is lowered. The utility model is suitable for construction positioning work of the upper structure of the large-span continuous rigid frame straight line hanging basket bridge.

Inventors

• ZHANG HANGCHUAN
• TANG ZHONGHAO
• OUYANG BO
• REN HAIBIN
• DENG YANG
• XU JIAN
• LIU LIANG
• SUN BING
• WU HAO
• SUN ZHENGCAI
• CAO ZHENG
• BAI GUOSHENG
• WANG YUANLIN
• Xiao Qianrui
• CHE JINPING
• LIAO LIHUA
• CHEN YONGJUN

Assignees

• 四川公路桥梁建设集团有限公司

Dates

Publication Date

20260508

Application Date

20250415

Claims (6)

1. 1. A laser auxiliary measurement system for a continuous rigid frame straight line hanging basket bridge is characterized by comprising a laser direction indicator (1), a forced centering pile (7), a laser reflector plate (3) and a telescopic adjusting rod (6), wherein the forced centering pile (7) is embedded in the middle line of a No. 0 block of a main bridge, the laser direction indicator (1) is mounted on the forced centering pile (7), and the telescopic adjusting rod (6) is used for connecting the laser direction indicator (1) with the forced centering pile (7) and is used for adjusting the elevation position of the laser direction indicator.
2. 2. The laser auxiliary measuring system for the continuous rigid frame straight basket hanging bridge is characterized in that the laser direction indicator (1) consists of a laser, an optical system, a power supply and an installation adjusting mechanism.
3. 3. The laser auxiliary measuring system for the continuous rigid frame straight line hanging basket bridge is characterized in that 4 laser directors (1) are respectively installed on the central axis of the bridge, 1 axis of a beam (2) of each laser director is formed to coincide with the center of the bridge, constructors accurately position and install the structure according to the axis of the beam (2), and laser reflecting plates (3) are installed on bridge decks of bridge juncture piers to achieve orientation of the plane position and elevation of the upper structure of the bridge.
4. 4. The laser auxiliary measurement system for the continuous rigid frame straight line basket bridge is characterized in that a forced centering pile is arranged at each center line position of a No. 0 bridge, 4 laser directors (1) are arranged on the forced centering piles respectively, and the forced centering piles (7) can be provided with the laser directors and the total station.
5. 5. The laser-assisted measurement system for the continuous rigid frame straight cradle bridge, which is disclosed in claim 1, is characterized in that the forced centering pile (7) is formed by casting a PVC pipe with the diameter larger than 30cm on a vertical bridge deck.
6. 6. The laser auxiliary measuring system for the continuous rigid frame straight line basket hanging bridge is characterized in that the laser direction indicator (1) and the laser reflector plate (3) are arranged on the same elevation, so that the axis of the beam (2) carries elevation attributes, and the accurate positioning of the steel bars and the templates is controlled by measuring the distances (8 and 9) between the beam and the beam sections.

Description

Laser auxiliary measurement system for continuous rigid frame straight line cradle bridge Technical Field The utility model relates to the field of auxiliary measurement of a cradle bridge, in particular to an auxiliary measurement system of a large-span continuous rigid frame straight-line cradle bridge based on a laser technology, which is suitable for night or dark external light by using the measurement technology of auxiliary orientation of construction of a main span beam section by using the laser technology. Background The bridge span combination of the Xixia high-speed secondary overstock bridge is (5×40) m prestressed concrete simply supported T beam+ (75+140+75) m continuous rigid frame+ (2×40) m prestressed concrete simply supported T beam, the full bridge length is 570m, and the bridge span combination of the large bridge left line bridge span is (2×30+40) m prestressed concrete simply supported T beam+ (3×40) m prestressed concrete simply supported T beam+ (75+140+75) m continuous rigid frame+ (1×40) m prestressed concrete simply supported T beam, and the full bridge length is 570m. The traditional continuous rigid frame hanging basket bridge has complex measuring and rechecking procedures, and needs the total station to be matched with the level to respectively carry out repeated measuring and rechecking work on the roof and the bottom of the girder section, thus consuming a great deal of manpower and occupying a great deal of time. The auxiliary measurement mode of the large-span continuous rigid frame straight line basket bridge based on the laser technology can quickly and effectively accurately position and orient continuous rigid frame basket bridge section construction, ensures the accuracy of construction, installation and positioning, and improves the efficiency of construction operation. Disclosure of utility model Therefore, in order to solve the defects, the utility model provides a laser auxiliary measuring system for a continuous rigid frame straight line basket hanging bridge. The traditional measurement mode can consume a large amount of manpower and occupy a large amount of time, and the construction efficiency of the main bridge section is low. Because of limited visual field, human error may occur during night measurement, and measurement accuracy is lowered. The utility model is suitable for construction positioning work of the upper structure of the large-span continuous rigid frame straight line hanging basket bridge. The utility model discloses a laser auxiliary measurement system for a continuous rigid frame straight line basket hanging bridge, which is characterized by comprising a laser direction indicator, a forced centering pile, a laser reflecting plate and a telescopic adjusting rod, wherein the forced centering pile is embedded in the middle line of a No. 0 block of a main bridge, the laser direction indicator is arranged on the forced centering pile, and the telescopic adjusting rod is used for connecting the laser direction indicator with the forced centering pile and adjusting the elevation position of the laser direction indicator. The laser direction indicator consists of a laser, an optical system, a power supply and an installation and adjustment mechanism. Furthermore, the laser directors are respectively arranged on the central axes of the bridge to form a strip axis with the beam of the laser directors coincident with the center of the bridge, constructors can accurately position and install the structure according to the beam axis, and the laser reflector is arranged on the bridge deck of the bridge junction pier to realize the orientation of the plane position and the elevation of the upper structure of the bridge. And further, arranging a forced centering pile at each center line position of the No. 0 bridge, and arranging 4 laser directors on the forced centering piles respectively, wherein the forced centering piles can be provided with the laser directors and the total station. And further, the forced centering pile is formed by casting a PVC pipe with the diameter larger than 30cm on a vertical bridge deck. And the laser director and the laser reflector plate are arranged on the same elevation, so that the axis of the beam carries the elevation attribute, and the accurate positioning of the steel bar and the template is controlled by measuring the distance between the beam and the beam section. Aiming at the continuous rigid frame cradle bridge, the utility model discloses a large-span linear bridge auxiliary measurement system based on a laser technology, and the laser direction indicator orients the characteristic line of the bridge after calibration, so that the auxiliary positioning work of the upper construction is accurately and efficiently completed. The measuring method is used for measuring the continuous rigid frame hanging basket bridge, is convenient for site construction and technical personnel to measure and recheck the bridge size,