CN-117248466-B - Shellfish Lei Lianggong frame connection and use method thereof

CN117248466BCN 117248466 BCN117248466 BCN 117248466BCN-117248466-B

Abstract

The invention discloses a shellfish Lei Lianggong frame connection and a using method thereof, and relates to the technical field of highway and urban road and bridge construction. The bailey beam arch frame connection comprises a bailey frame arch frame, wherein the bailey frame arch frame connection consists of a single-end double-pin-hole lug plate full-thread screw rod, a bidirectional thread connecting sleeve, a long single-end single-pin-hole lug plate full-thread screw rod, a short single-end single-pin-hole lug plate full-thread screw rod and a pin bolt, and core components of the bailey frame arch frame connection are the single-end double-pin-hole lug plate full-thread screw rod and the bidirectional thread connecting sleeve. According to the bailey beam arch frame connection and the application method thereof, the stable triangular truss structure can be formed by matching with the connecting rod piece through the double-pin hole structure of the single-end double-pin hole lug plate full-thread screw rod. Meanwhile, the length of the connecting rod piece can be quickly adjusted and locked through the bidirectional threaded connecting sleeve with the limiting hole and the adjusting clamping hole, and the stress condition and the bearing capacity of the rod piece can not be basically interrupted or changed in the whole adjusting process.

Inventors

ZHOU ZHOU
SHI GUANGJUN
ZHANG YANQUAN
CAO XIAOBO

Assignees

中国十七冶集团有限公司

Dates

Publication Date: 20260505
Application Date: 20231016

Claims (4)

1. The using method of the bailey Lei Lianggong frame connection is characterized by comprising a bailey Lei Lianggong frame connection, wherein the bailey beam frame connection comprises a bailey frame arch, the bailey frame arch connection consists of a single-end double-pin-hole lug plate full-thread screw (1), a bidirectional thread connecting sleeve (2), a long single-end single-pin-hole lug plate full-thread screw (3), a short single-end single-pin-hole lug plate full-thread screw (4) and a pin bolt, the core component of the bailey frame arch connection comprises the single-end double-pin-hole lug plate full-thread screw (1) and the bidirectional thread connecting sleeve (2), and two pin hole lug plates which are simultaneously connected in a bolting mode are fixed at one end of the screw; the pin hole lug plates are matched into female and male pin hole lug plates according to chord member joints of the spliced standard bailey frames or truss girder sheets; The two ends of the bailey arch frame are respectively provided with a long single-end single-pin-hole lug plate full-thread screw rod (3), two ends of the long single-end single-pin-hole lug plate full-thread screw rod (3) are respectively provided with a single-end double-pin-hole lug plate full-thread screw rod (1), one side, far away from the long single-end single-pin-hole lug plate full-thread screw rod (3) connected with the single-end double-pin-hole lug plate full-thread screw rod (1), of the bailey arch frame is fixed relative to the bailey arch frame, the whole long single-end single-pin-hole lug plate full-thread screw rod (3) is obliquely arranged relative to a horizontal plane, one side, far away from the center vertical line of the bailey arch frame, of the single-end double-pin-hole lug plate full-thread screw rod (1) is provided with a short single-pin-hole lug plate full-thread screw rod (4), and two-way thread connecting sleeves (2) are respectively arranged on the long single-end single-pin-hole lug plate full-thread screw rod (3) and the short single-pin-hole lug plate full-thread screw rod (4); The concrete operation of the bailey beam arch frame connection and the using method thereof is as follows: S1, constructing an arch abutment or a pier, arranging a matched arch frame and an arch hinge, and temporarily solidifying the arch hinge; s2, according to planning and calculation, carrying out quick initial positioning connection on the standard truss piece and the connecting piece to form a hoisting section length; s3, hoisting each hoisting section of the arch frame or the transversely assembled unit sections to a temporary buttress or a bracket, or carrying out buckling rope constraint, and installing corresponding section arch frame slices for transverse connection; s4, adjusting the elevation of the arch centering on the temporary buttress or the bracket or under the assistance of the buckling rope, and adjusting the parameters of the connecting rod by utilizing the bidirectional threaded connecting sleeve so that each arch centering meets the calculated pre-arch degree, and then fixing by adopting a connecting piece; s5, after temporary consolidation of the arch hinge is released, the temporary buttoning pier or the bracket slowly supports or loosens the buckling rope, the theoretical deviation value of the linear elevation of the arch centering is measured and recorded, and the linear shape of the arch centering curve is finely adjusted to a theoretical design value through the bidirectional threaded connection sleeve under the constraint condition of adopting or not adopting the temporary buttoning pier or the bracket or the buckling rope again; S6, after the ballast test, according to the ballast deformation, correcting again by using the bidirectional threaded connecting sleeve until the design and construction requirements are met; S7, erecting a template and a support beam for pouring an upper structure on the arch frame, and completing upper pouring construction; S8, the temporary buttresses or the brackets or the buckling ropes are utilized to complete arch frame segmentation and arch hinge removal, and the rest bridge construction is completed.
2. The method for using the bailey beam arch frame according to claim 1, wherein the bidirectional threaded connecting sleeve (2) is a sleeve with internal threads at two ends of the sleeve respectively arranged clockwise and anticlockwise, and the bidirectional threaded connecting sleeve (2) can change the relative distance between connecting screws at two ends by rotating clockwise or anticlockwise.
3. The method of claim 1, wherein a plurality of length-adjusting holes or screw holes (202) are provided in the middle of the bidirectional threaded connection sleeve.
4. The method of claim 1, wherein screw tightening limiting holes (201) penetrating through the wall thickness of the sleeve are formed at two ends of the bidirectional threaded connection sleeve to limit screw rotation.

Description

Shellfish Lei Lianggong frame connection and use method thereof Technical Field The invention relates to the technical field of construction of roads and urban roads and bridges, in particular to a shellfish Lei Lianggong frame connection and a use method thereof. Background For a middle-small span cast-in-situ reinforced concrete/prestressed concrete structure with the bottom of the upper structure being arched, parabolic or catenary curve, bracket construction or arch construction is often adopted, and the arch construction has no problem of the grounding of a middle-span foundation of the bracket construction, so that the cast-in-situ reinforced concrete/prestressed concrete structure is more suitable for complex and changeable site construction conditions. The truss type arch frame for construction mainly comprises a Bailey beam piece assembled arch frame, a six-four military beam piece assembled arch frame, a fine-adjustable steel arch frame, an adjustable triangular truss piece arch frame and the like. In order to adapt to curve linear change, if the bailey beam arch frame is directly connected between the upper chord member and the lower chord member of the two rectangular truss bailey beam sheets by adopting a hinging rod, geometric variable connection occurs, so that only a trapezoid piece with a customized geometric stable size can be adopted for adjustment, and more T-shaped connecting pieces for increasing the distance between the upper chord members are adopted in actual use. The traditional bailey beam arch frame has the defects that a large number of connecting pieces with different sizes are prefabricated for different curve lines, and the actual assembly has deviation and is difficult to fold, so that the problem that the connecting pieces are required to be folded in situ is solved. The six-four military beam arch consists of standard triangle, end frame, standard chord, end chord, oblique chord, stay bar and parallel beam. Which accommodates the change in profile by adjusting the custom length bottom chord. However, similar to the traditional bailey arch frame, the length of the lower chord member needs to be customized according to different curves, and the actual assembly has the conditions that the actual assembly is difficult to fold and the folding connecting piece needs to be processed on site. In addition, except that the arch frame based on the triangular truss is higher, the environment limited by the space under the bridge cannot be adapted, the calculated length of the lower chord is larger than that of the bailey arch frame, and the compression stability reduction is larger. The fine-tuning steel arch is improved on the traditional bailey arch, and the change of curve line shape is adapted by arranging male and female connectors with adjustable threads at two ends of an upper chord of the bailey beam. But on one hand, the adjustable range of the screw thread is shorter, the adaptive curve adjustment range is limited, and on the other hand, the arc female-male joint can only bear pressure, and when the tension working condition of the upper chord member occurs to the local construction load, the stability and safety problems can occur. Other adjustable triangular truss arches are mainly divided into two types, one type is to customize a plurality of length hinged lower chords, the deviation value of the control arch and a design curve is smaller than a certain controllable range through combination of the lower chords with different lengths, and the other type is to adjust the length of the lower chords by adopting clamping grooves, clamping strips or gaskets. The two types of arches are similar to six four military beam arches except that the adjustable range is still limited, the height of the arch based on the triangular truss is higher, the arch cannot adapt to the environment limited by the space under the bridge, the calculated length of the lower chord is larger than that of the bailey arch, and the compression stability reduction is larger. Besides the problems, the various existing truss arches have the main problems that firstly, the spliced arches cannot be customized and adjusted again under the matching of buckling rope adjustment, but the construction deviation and the elevation of the spliced sections cannot be adjusted, the buckling rope adjustment can bring hyperstatic constraint influence, the construction period is difficult to ensure, secondly, the traditional bailey beam arches and the six-four military beam arches must be customized by one bridge, different linear shapes need to be customized by different bars, the bars with different lengths are difficult to recycle, other arches such as fine-tuning arches are difficult to meet the requirements of most of construction conditions, or the splicing accuracy is low, or the adjusting range is extremely limited, and in addition, the existing truss arch connecting structure can only adapt to certain customized t