阅读说明：本技术 一种基于四点定位的螺栓连接式钢管桩栈桥及施工方法 (Four-point positioning-based bolted steel pipe pile trestle and construction method ) 是由 卢军球 陈萃 陈石 李健 汪亦显 汤瑞 王凯 郭永刚 徐健跃 刘校峰 王启生 于 2021-10-09 设计创作，主要内容包括：本发明属于桥梁施工的技术领域,特别涉及一种基于四点定位的螺栓连接式钢管桩栈桥及施工方法,包括桥面和钢管桩支撑机构；桥面包括等间隔布置的工字钢纵梁,和铺设于工字钢纵梁上端的花纹钢面板；钢管桩支撑机构包括位于桥面下方且沿桥面长度方向等间隔设置的钢管桩组,每组钢管桩包括直立布置在方形四个直角处的四根钢管桩；每组所述钢管桩还包括加固机构,加固机构包括四对加固支架,使得相邻两根钢管桩之间的上部和下部对应布置一对加固支架,且每个加固支架分别和相邻两根钢管桩通过高强螺栓固定连接。使得本发明的钢管桩栈桥的钢管桩垂直度得到保证,提高了栈桥在水流中的稳定性。稳固,安装拆卸快捷。(The invention belongs to the technical field of bridge construction, and particularly relates to a four-point positioning-based bolted steel pipe pile trestle and a construction method thereof, wherein the trestle comprises a bridge floor and a steel pipe pile supporting mechanism; the bridge deck comprises I-shaped steel longitudinal beams which are arranged at equal intervals and a pattern steel panel which is laid at the upper ends of the I-shaped steel longitudinal beams; the steel pipe pile supporting mechanism comprises steel pipe pile groups which are positioned below the bridge floor and are arranged at equal intervals along the length direction of the bridge floor, and each group of steel pipe piles comprises four steel pipe piles which are vertically arranged at four right angles of a square; each group of steel pipe piles further comprise reinforcing mechanisms, each reinforcing mechanism comprises four pairs of reinforcing supports, a pair of reinforcing supports are correspondingly arranged on the upper portion and the lower portion between every two adjacent steel pipe piles, and each reinforcing support is fixedly connected with the two adjacent steel pipe piles through high-strength bolts. The perpendicularity of the steel pipe pile trestle is guaranteed, and the stability of the trestle in water flow is improved. Firm, the installation is dismantled swiftly.)

1. A four-point positioning based bolt connection type steel pipe pile trestle comprises a bridge floor and a steel pipe pile supporting mechanism, wherein two sides of the bridge floor are provided with fences (11);

the bridge deck comprises I-shaped steel longitudinal beams (12) which are arranged at equal intervals, and a pattern steel panel (13) laid at the upper ends of the I-shaped steel longitudinal beams (12); the steel pipe pile supporting mechanism comprises steel pipe pile groups which are positioned below the bridge floor and are arranged at equal intervals along the length direction of the bridge floor, each steel pipe pile group comprises four steel pipe piles (21) which are vertically arranged at four square right angles, each steel pipe pile (21) is provided with a pile cap (22), and two adjacent steel pipe piles (21) positioned in the width direction of the bridge floor are fixedly arranged on the lower bottom surface of the bridge floor through I-shaped steel cross beams (23);

the method is characterized in that: each group of steel pipe piles further comprise reinforcing mechanisms, each reinforcing mechanism comprises four reinforcing supports, a pair of reinforcing supports are correspondingly arranged on the upper portion and the lower portion between every two adjacent steel pipe piles (21), and each reinforcing support (3) is fixedly connected with the two adjacent steel pipe piles (21) through high-strength bolts.

2. The four-point positioning based bolted steel pipe pile trestle of claim 1, which is characterized in that: every consolidate support (3) and be the channel-section steel welding spare, and including the rectangle and consolidate the frame, consolidate the frame and go up a pair of bracing (31) of welded fastening, four right angles departments of rectangle reinforcement frame are respectively through strengthening steel sheet (4) and corresponding steel-pipe pile (21) bolt fixed connection.

3. The four-point positioning based bolted steel pipe pile trestle of claim 2, which is characterized in that: the notches of the channel steel welding pieces of the fixed support (3) face towards the inner sides of the corresponding steel pipe pile groups.

4. The construction method of the bolted steel pipe pile trestle based on four-point positioning according to any one of claims 1 to 3, which is characterized by comprising the following steps of: comprises the following steps of (a) carrying out,

step (1): processing a steel pipe pile (21), selecting a spiral steel pipe for the steel pipe pile (21), transporting the steel pipe pile to a construction site in a segmented mode, splicing, welding a square pile cap (22) on the pile top, and meanwhile welding four reinforcing plates at the pile end for reinforcing; when the pipe sections are assembled and butted, the pipe sections are simply fixed and then welded, at least two layers of welding seams are welded, and the pipe sections are welded straightly and are not dislocated;

step (2): inserting and driving a steel pipe pile (21),

after prefabrication of the steel pipe piles (21) is completed, accurately positioning the pile position of each steel pipe pile (21) by using a GPS system, starting a vibrating pile hammer to vibrate after confirming that the pile position and the verticality of the steel pipe piles (21) meet the requirements, continuously detecting the verticality of the piles in the vibrating process, and finding that deviation needs to be corrected in time; when the pile is driven in a vibrating mode, the center of the vibrating hammer and the steel pipe pile (21) are kept on the same axis, and the pile is driven continuously, so that the pile tops are located on the same horizontal plane;

and (3): prefabricating and installing an anti-deformation reinforcing bracket (3),

splicing channel steel with the same specification according to the specification size to form a reinforcing support (3), drilling holes at the set positions of four corners of the rectangular frame, and polishing holes and the periphery of the holes smoothly so as to facilitate bolt perforation;

aligning the prefabricated reinforcing support (3) with two adjacent steel pipe piles (21), welding and fixing after the reinforcing steel plate (4) is determined to be in flat butt joint with the prefabricated reinforcing support (3), and fixedly connecting the reinforcing support (3) with the corresponding steel pipe pile (21) by a high-strength bolt penetrating through the reinforcing steel plate (4); after all prefabricated reinforcing brackets (3) are installed, spraying paint at the joints of the high-strength bolts (3) to prevent rust corrosion;

and (4): a cross beam (4) of the mounting platform and a longitudinal beam (5),

after the steel pipe piles (21) and the reinforcing support (3) are installed and adjusted, a pile top is settled and observed by using a leveling instrument, an I-shaped steel cross beam (23) is installed after all the steel pipe piles (21) are confirmed to be coplanar and meet the settlement requirement, and after the I-shaped steel cross beam (23) is installed, I-shaped steel longitudinal beams (12) are uniformly erected on the upper portion of a cross beam (4) and are welded and fixed;

and (5): a pattern steel panel (13) and a protective guard (7) are installed,

a patterned steel panel (13) is laid on the top of the I-shaped steel longitudinal beam (12) to cover the whole bridge floor, contact points of the patterned steel panel (13) and the I-shaped steel longitudinal beam (12) are fully welded, and an expansion joint is reserved according to a designed position to prevent the bridge floor from warping and fluctuating caused by temperature change; the fence (11) is arranged on two sides of the patterned steel panel (13), and the fence (11) is connected with the patterned steel panel (13) through high-strength bolts.

Technical Field

The invention belongs to the technical field of bridge construction, and particularly relates to a four-point positioning-based bolted steel pipe pile trestle and a construction method.

Background

The trestle is a temporary bearing structure built on water for transporting materials, equipment and personnel, and has the remarkable characteristics of high bearing capacity, high construction speed, convenience in disassembly and assembly and the like. The steel trestle has the advantages of light structure, good integrity and small deformation, and is widely applied in the bridge construction process.

In actual construction and use, the riverbed bottom geological conditions often differ a lot, and river surface rivers impact force also can cause adverse effect to landing stage support stability, and along with the lapse of time, the deflection and the displacement volume of landing stage support increase gradually, and landing stage life reduces, and this has also caused serious threat to landing stage's structural safety. Based on this, the conventional practice is: steel members such as steel pipes and channel steels are welded between the steel pipe piles to resist relative displacement between the steel pipe piles. This approach, although simple and easy to implement, has a number of drawbacks: the prestress between the non-standard steel component and the steel pipe pile is large and is not easy to eliminate; the welding can generate larger residual stress to cause local deformation, and the welding quality is not easy to check; the welding process is time-consuming and labor-consuming, the support is inconvenient to disassemble, and the reusability of materials is damaged.

Therefore, how to realize the stability of the trestle support under the conditions of complex geology and strong water flow impact and further improve the construction efficiency of the trestle becomes the direction for improving the structural form and the construction method of the trestle.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, provides a trestle structure capable of realizing rapid and stable construction under the conditions of complex geology and strong water flow impact, and the specific technical scheme is as follows:

a four-point positioning based bolt connection type steel pipe pile trestle comprises a bridge floor and a steel pipe pile supporting mechanism, wherein two sides of the bridge floor are provided with fences 11;

the bridge deck comprises I-shaped steel longitudinal beams 12 which are arranged at equal intervals, and a pattern steel panel 13 which is laid at the upper ends of the I-shaped steel longitudinal beams 12; the steel pipe pile supporting mechanism comprises steel pipe pile groups which are positioned below the bridge floor and are arranged at equal intervals along the length direction of the bridge floor, each group of steel pipe piles comprises four steel pipe piles 21 which are vertically arranged at four right angles of a square, each steel pipe pile 21 is provided with a pile cap 22,

two adjacent steel pipe piles 21 positioned in the width direction of the bridge floor are fixedly arranged on the lower bottom surface of the bridge floor through I-shaped steel cross beams 23;

each group the steel-pipe pile still includes reinforcing mechanism, and reinforcing mechanism includes four pairs of reinforcement support for upper portion and lower part between two adjacent steel-pipe piles 21 correspond arranges a pair of reinforcement support, and every reinforcement support 3 respectively with two adjacent steel-pipe piles 21 through high strength bolt fixed connection.

Further, every consolidate support 3 and be the channel-section steel welding spare, and including the rectangle and consolidate the frame, consolidate the frame and go up a pair of bracing 31 of welded fastening, four right angles departments of rectangle reinforcement frame are respectively through strengthening steel sheet 4 and the 21 bolt fastening of steel-pipe pile that correspond.

Further, the notches of the channel steel welding pieces of the fixed support 3 face the inner sides of the corresponding steel pipe pile groups.

Also comprises a construction method of the bolted steel pipe pile trestle based on four-point positioning, which comprises the following steps,

step (1): processing a steel pipe pile 21, selecting a spiral steel pipe for the steel pipe pile 21, transporting the steel pipe pile to a construction site in a segmented mode, splicing, welding a square pile cap 22 on the pile top, and welding four reinforcing plates at the pile end for reinforcing; when the pipe sections are assembled and butted, the pipe sections are simply fixed and then welded, at least two layers of welding seams are welded, and the pipe sections are welded straightly and are not dislocated;

step (2): the steel-pipe pile 21 is inserted and driven,

after the prefabrication of the steel pipe piles 21 is finished, accurately positioning the pile position of each steel pipe pile 21 by using a GPS system, starting a pile vibrating hammer to vibrate after confirming that the pile position and the verticality of each steel pipe pile 21 meet the requirements, continuously detecting the verticality of the pile in the vibrating process, and finding that the deviation needs to be corrected in time; when the pile is driven in a vibrating mode, the center of the vibrating hammer and the steel pipe pile 21 are kept on the same axis, and the pile is driven continuously, so that the pile tops are located on the same horizontal plane;

and (3): prefabricating and installing the anti-deformation reinforcing bracket 3,

splicing channel steel with the same specification according to the specification size to form a reinforcing support 3, drilling holes at the set positions of four corners of the rectangular frame, and polishing holes and the periphery of the holes to be smooth and flat so as to facilitate bolt perforation;

aligning the prefabricated reinforcing support 3 with two adjacent steel pipe piles 21, welding and fixing after the reinforcing steel plate 4 is determined to be in flat butt joint with the prefabricated reinforcing support 3, and fixedly connecting the reinforcing support 3 with the corresponding steel pipe piles 21 by high-strength bolts penetrating through the reinforcing steel plate 4; after all prefabricated reinforcing brackets 3 are installed, spraying paint at the joints of the high-strength bolts 3 to prevent rust;

and (4): a cross beam 4 and a longitudinal beam 5 of the mounting platform,

after the steel pipe piles 21 and the reinforcing support 3 are installed and adjusted, a pile top is subjected to settlement observation by using a leveling instrument, I-shaped steel cross beams 23 are installed after all the steel pipe piles 21 are determined to be coplanar and meet the requirement of settlement, and after the I-shaped steel cross beams 23 are installed, I-shaped steel longitudinal beams 12 are uniformly erected on the upper portions of the cross beams 4 and are welded and fixed;

and (5): the patterned steel panel 13 and the guard rail 7 are installed,

paving a patterned steel panel 13 on the top of the I-shaped steel longitudinal beam 12 to cover the whole bridge floor, fully welding contact points of the patterned steel panel 13 and the I-shaped steel longitudinal beam 12, and reserving expansion joints according to designed positions to prevent the bridge floor from warping and fluctuating caused by temperature change; the fence 11 is arranged on two sides of the patterned steel panel 13, and the fence 11 is connected with the patterned steel panel 13 through high-strength bolts.

The invention has the following beneficial technical effects:

according to the steel pipe pile trestle, four steel pipe piles are used as a group of steel pipe piles, the plane of each group of steel pipe piles respectively occupies four vertexes of a square, a pair of reinforcing supports are correspondingly arranged at the upper part and the lower part between every two adjacent steel pipe piles of each group of steel pipe piles, each reinforcing support is fixedly connected with every two adjacent steel pipe piles through high-strength bolts, relative displacement between the steel pipe piles of each group of steel pipe piles is avoided, the steel pipe piles are prevented from shifting, the perpendicularity of the steel pipe piles is guaranteed while the deviation of the steel pipe piles is limited, the stability of the trestle in water flow is improved, the trestle is simple in structure and quick to install and disassemble, and the construction progress of the trestle is accelerated.

Drawings

Fig. 1 is a schematic structural view of the steel pipe pile trestle of the present invention.

Fig. 2 is an enlarged view of a portion a in fig. 1.

Fig. 3 is a side view of the steel pipe pile trestle of the present invention.

Reference numerals: 11 fences, 12I-steel longitudinal beams, 13 pattern steel panels, 21 steel pipe piles, 22 pile caps, 23I-steel cross beams, 3 reinforcing supports, 31 pairs of inclined struts and 4 reinforcing steel plates.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

Examples

Referring to fig. 1, the four-point positioning based bolt connection type steel pipe pile trestle comprises a bridge floor and a steel pipe pile supporting mechanism, wherein two sides of the bridge floor are provided with fences 11;

the bridge deck comprises I-shaped steel longitudinal beams 12 which are arranged at equal intervals, and a pattern steel panel 13 which is laid at the upper ends of the I-shaped steel longitudinal beams 12; the steel pipe pile supporting mechanism comprises steel pipe pile groups which are positioned below the bridge floor and are arranged at equal intervals along the length direction of the bridge floor, each group of steel pipe piles comprises four steel pipe piles 21 which are vertically arranged at four right angles of a square, each steel pipe pile 21 is provided with a pile cap 22,

two adjacent steel pipe piles 21 positioned in the width direction of the bridge floor are fixedly arranged on the lower bottom surface of the bridge floor through I-shaped steel cross beams 23;

each group the steel-pipe pile still includes reinforcing mechanism, and reinforcing mechanism includes four pairs of reinforcement support for upper portion and lower part between two adjacent steel-pipe piles 21 correspond arranges a pair of reinforcement support, and every reinforcement support 3 respectively with two adjacent steel-pipe piles 21 through high strength bolt fixed connection.

Referring to fig. 2 and 3, each of the reinforcing brackets 3 is a channel steel welded part and includes a rectangular reinforcing frame, a pair of diagonal braces 31 are welded and fixed to the reinforcing frame, and four right-angle portions of the rectangular reinforcing frame are respectively fixedly connected to corresponding steel pipe piles 21 through reinforcing steel plates 4 by bolts.

The notches of the channel steel welding pieces of the fixed support 3 face the inner sides of the corresponding steel pipe pile groups.

The construction method of the bolted steel pipe pile trestle comprises the following steps,

step (1): processing a steel pipe pile 21, selecting a spiral steel pipe for the steel pipe pile 21, transporting the steel pipe pile to a construction site in a segmented mode, splicing, welding a square pile cap 22 on the pile top, and welding four reinforcing plates at the pile end for reinforcing; when the pipe sections are assembled and butted, the pipe sections are simply fixed and then welded, at least two layers of welding seams are welded, and the pipe sections are welded straightly and are not dislocated;

step (2): the steel-pipe pile 21 is inserted and driven,

after the prefabrication of the steel pipe piles 21 is finished, accurately positioning the pile position of each steel pipe pile 21 by using a GPS system, starting a pile vibrating hammer to vibrate after confirming that the pile position and the verticality of each steel pipe pile 21 meet the requirements, continuously detecting the verticality of the pile in the vibrating process, and finding that the deviation needs to be corrected in time; when the pile is driven in a vibrating mode, the center of the vibrating hammer and the steel pipe pile 21 are kept on the same axis, and the pile is driven continuously, so that the pile tops are located on the same horizontal plane;

and (3): prefabricating and installing the anti-deformation reinforcing bracket 3,

splicing channel steel with the same specification according to the specification size to form a reinforcing support 3, drilling holes at the set positions of four corners of the rectangular frame, and polishing holes and the periphery of the holes to be smooth and flat so as to facilitate bolt perforation;

aligning the prefabricated reinforcing support 3 with two adjacent steel pipe piles 21, welding and fixing after the reinforcing steel plate 4 is determined to be in flat butt joint with the prefabricated reinforcing support 3, and fixedly connecting the reinforcing support 3 with the corresponding steel pipe piles 21 by high-strength bolts penetrating through the reinforcing steel plate 4; after all prefabricated reinforcing brackets 3 are installed, spraying paint at the joints of the high-strength bolts 3 to prevent rust;

and (4): a cross beam 4 and a longitudinal beam 5 of the mounting platform,

after the steel pipe piles 21 and the reinforcing support 3 are installed and adjusted, a pile top is subjected to settlement observation by using a leveling instrument, I-shaped steel cross beams 23 are installed after all the steel pipe piles 21 are determined to be coplanar and meet the requirement of settlement, and after the I-shaped steel cross beams 23 are installed, I-shaped steel longitudinal beams 12 are uniformly erected on the upper portions of the cross beams 4 and are welded and fixed;

and (5): the patterned steel panel 13 and the guard rail 7 are installed,

paving a patterned steel panel 13 on the top of the I-shaped steel longitudinal beam 12 to cover the whole bridge floor, fully welding contact points of the patterned steel panel 13 and the I-shaped steel longitudinal beam 12, and reserving expansion joints according to designed positions to prevent the bridge floor from warping and fluctuating caused by temperature change; the fence 11 is arranged on two sides of the patterned steel panel 13, and the fence 11 is connected with the patterned steel panel 13 through high-strength bolts.

It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.