Cast-in-place variable cross-section beam body formwork connecting structure and construction method thereof
A technology of variable cross-section beams and connecting structures, used in bridges, bridge materials, bridge construction, etc.
Active Publication Date: 2020-10-27
中国建筑土木建设有限公司
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Problems solved by technology
[0003] The invention provides a connection structure of cast-in-place variable-section beam formwork and its construction method, which is used to solve the simple installation of the lower frame body and support system and the connection frame body and support structure when the high-altitude formwork is supported in variable-section bridge engineering Technical issues such as the fixed installation and the application of Bailey beams to adapt to the line shape of the beam body
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[0033] Taking a concrete beam with T-shaped deformed section as an example, such as figure 1 and figure 2 As shown, it is the longitudinal direction of the beam body 16; image 3 and Figure 4 is the cross-sectional direction of the bridge body. The formwork 14 is supported by the connection structure of the cast-in-place variable cross-section beam body 16, and the beam body 16 is subsequently poured. Connector 6 between column 5 and side pier 1 or between vertical connecting column 5 and middle pier 3, Bailey beam 9 connected to the upper part of vertical connecting column 5, support frame 13 connected to the upper part of Bailey beam 9 and connected to the The formwork 14 on the top of the Bailey beam 9 at the outer contour line of the beam body 16, the top of the support frame 13 and the side. Wherein, the top of the support frame 13 is the lower surface of the flange plate of the beam body 16 .
[0034] In this embodiment, the side foundation 2 is connected under th...
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The invention discloses a cast-in-place variable cross-section beam body formwork connecting structure and a construction method thereof. The connecting structure comprises a vertical connecting column, a connecting piece connected to the vertical connecting column, a bailey beam connected to the upper portion of the vertical connecting column, a supporting frame connected to the upper portion ofthe bailey beam and a corresponding beam body formwork. The bailey beam is a linear beam and is in a broken line shape in a length direction of a beam body to be poured, and a set of vertical supportsare further connected below the bailey beam. The bailey beam is spliced and connected at bending points, the bailey beam is connected with the vertical support and the vertical connecting column through bottom supporting and adjusting pieces, and the upper portion of the bailey beam is connected with the formwork through a top supporting and adjusting piece. Through the combined arrangement of the vertical connecting column, the vertical support and the supporting frame, a stress of a lower part of the formwork is favorably ensured; through the arrangement of the connecting piece, overall fixation can be ensured; the bailey beam is arranged in the broken line shape so that adaptive installation is facilitated according to beam body lines with different sections, installation precision isguaranteed, and construction quality is improved; and the bottom supporting and adjusting piece and the top supporting and adjusting piece are arranged in a combined mode, fine adjustment is facilitated, and the construction precision is guaranteed.
Description
technical field [0001] The invention belongs to the field of formwork engineering construction, in particular to a connection structure of a cast-in-place variable-section beam formwork and a construction method thereof. Background technique [0002] With the development of national infrastructure construction, there are many continuous beam constructions in bridge engineering. Although the traditional hanging basket method construction and full hall support method construction are widely used, there are still many shortcomings. The erection of large-area supports by the full house support method not only requires a lot of cost, but also has certain requirements on geological conditions, and it will also affect traffic when passing by roads; the hanging basket method has less construction work surface and a long construction period, so it cannot be applied to continuous beam construction with a tight construction period. In addition, due to the variable cross-section design ...
Claims
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IPC IPC(8): E01D21/00E01D2/00E01D101/24
CPCE01D21/00E01D2/00E01D2101/24
Inventor 高树青张佳张久明徐永刚
Owner 中国建筑土木建设有限公司