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CN-121992798-A - Steel sheet pile supporting device and construction method thereof

CN121992798ACN 121992798 ACN121992798 ACN 121992798ACN-121992798-A

Abstract

The application relates to the technical field of civil engineering, in particular to a steel sheet pile supporting device which comprises a pile plate main body, an enclosing purlin component and steel tube supports, wherein the pile plate main body is fixedly connected with the enclosing purlin component through a hanging piece, the enclosing purlin component comprises a front plate, a rear plate and I-steel, the front plate is connected with the rear plate through at least two groups of first bolts, the length of each first bolt is larger than the distance between the front plate and the rear plate, the I-steel is inserted between the front plate and the rear plate, the number of the first bolts is 2-3, the steel tube supports are steel tubes, the steel tube supports are connected with the front plate, and at least two groups of first stiffening ribs are arranged at the end part of the steel tube support, which is close to one side of the front plate, and are in threaded connection with a supporting piece through first bolt holes.

Inventors

  • JIAO YALEI
  • YANG XIN
  • WANG NING
  • ZHAO XIAOFEI
  • WANG PENG
  • GAO LINFENG
  • ZHAO YANG

Assignees

  • 天津市政工程设计研究总院有限公司

Dates

Publication Date
20260508
Application Date
20260313

Claims (10)

  1. 1. The steel sheet pile supporting device comprises a pile sheet main body (1), an enclosing purlin assembly (2) and a steel pipe support (3), and is characterized in that the pile sheet main body (1) is fixedly connected with the enclosing purlin assembly (2) through a hanging piece (4); The enclosing purlin assembly (2) comprises a front plate (21), a rear plate (22) and I-steel (23), wherein the front plate (21) and the rear plate (22) are connected through first bolts (24), at least two groups of the first bolts (24) are arranged, and the length of the first bolts (24) is larger than the distance between the front plate (21) and the rear plate (22); The I-steel (23) is inserted between the front plate (21) and the rear plate (22), the number of the I-steel (23) is 2-3, the I-steel (23) comprises 1 top I-steel (231), and the top I-steel (231) is arranged at one end, close to the ground outside the pit, of the pile plate main body (1); The steel pipe is propped (3) and is the steel pipe, steel pipe prop (3) with front bezel (21) are connected, steel pipe prop (3) be close to the tip of front bezel (21) one side is equipped with first stiffening rib (31), be equipped with first bolt hole (311) on first stiffening rib (31), front bezel (21) are provided with two at least support piece (211) of group, first stiffening rib (31) pass through first bolt hole (311) with support piece (211) threaded connection.
  2. 2. Steel sheet pile supporting device according to claim 1, characterized in that the side of the pile sheet body (1) close to the ground outside the pit is provided with a mounting hole (11) and a second bolt hole (12), the distance of the mounting hole (11) from the edge of the side of the pile sheet body (1) close to the ground outside the pit being 50mm.
  3. 3. Steel sheet pile supporting device according to claim 1, characterized in that the suspension element (4) comprises a suspension plate (41) and a fork-shaped connecting end (42), wherein a third bolt hole (411) is arranged on the suspension plate (41), the fork-shaped connecting end (42) comprises two symmetrical connecting support legs (421), one end of each connecting support leg (421) far away from the suspension plate (41) is provided with a fourth bolt hole (4211), and the axes of the fourth bolt holes (4211) are coaxial.
  4. 4. A steel sheet pile supporting device according to claim 3, characterized in that the hanger plate (41) is connected to the fork-shaped connecting end (42) by means of a locking key (43).
  5. 5. A steel sheet pile supporting device according to claim 3, characterized in that a second stiffening rib (2314) is provided on a side surface of the top i-steel (231) close to the ground outside the pit, the second stiffening rib (2314) is provided with at least two fourth bolt holes (23141), and the fourth bolt holes (23141) are matched with the specifications of the fourth bolt holes (4211).
  6. 6. A steel sheet pile supporting device according to claim 5, characterized in that the second stiffening rib (2314) is fixedly connected with the hanger (4) by means of a second bolt (44).
  7. 7. A steel sheet pile supporting device according to claim 1, characterized in that the supporting elements (211) comprise large supporting elements (2111) and small supporting elements (2112), each set of the large supporting elements (2111) being spaced apart from each set of the small supporting elements (2112) by 3m.
  8. 8. A method of constructing a steel sheet pile support device as claimed in any one of claims 1 to 7, comprising the steps of: S1, calculating the specification and the number of components according to the actual situation and the design drawing of the site, and purchasing or processing the components, wherein the components comprise pile plates, enclosing purlins and steel pipe supports; s2, constructing a pile plate main body (1) according to drawing and standard requirements, and assembling an enclosing purlin assembly (2); S3, excavating soil in the foundation pit after the construction of the pile plate main body (1) is completed; s4, hoisting the enclosing purlin assembly (2) to a designated position, and installing a hanging piece (4); S5, mounting a steel pipe support (3) on the enclosing purlin assembly (2) through a first bolt hole (311); s6, excavating the foundation pit to the designed pit bottom, and constructing a built-in structure of the foundation pit; And S7, after the engineering construction is finished, backfilling the interior of the foundation pit according to the design requirement, and then sequentially removing the steel pipe support (3), the enclosing purlin assembly (2) and the hanging piece (4) according to the installation sequence, and pulling out the pile plate main body (1).
  9. 9. The construction method of the steel sheet pile supporting device according to claim 8, wherein the excavation depth of the soil body inside the excavated foundation pit in step S3 is controlled to a position of 0.3m below the center elevation of the first steel pipe support (3).
  10. 10. The construction method of the steel sheet pile supporting device according to claim 8, wherein in the step S7, the inside of the foundation pit is backfilled to a position 0.3m below the center elevation of the steel tube support (3).

Description

Steel sheet pile supporting device and construction method thereof Technical Field The invention relates to the technical field of civil engineering, in particular to a steel sheet pile supporting device and a construction method thereof. Background With the development of engineering fields, the requirements on the construction cost and the construction period of new projects are more and more strict. In recent years, more cities frequently suffer from flood disasters, and urban pipeline updating projects are built at odds. The project has the characteristics that the project is usually positioned in an urban area, the periphery of a planned pipeline is a civil house, the space is narrow, the construction condition of large-area slope expansion is not provided, the buried pipeline is smaller and shallower, the width of a foundation pit of the pipeline is smaller, the depth of the foundation pit is not large, the pipeline is longer, the working condition of the foundation pit is complex due to different geology and pit depths, and the like. In combination with related experience, the foundation pit construction method most suitable for the engineering is steel sheet pile support, but the current steel sheet pile support and construction method still have great defects: 1) In order to prevent the steel sheet pile from falling down, a bracket or a reinforcing steel bar is required to be welded on the surface of the steel sheet pile, the welding action generates temperature stress damage to the steel sheet pile, and meanwhile, the steel sheet pile needs to be cut off when being dismantled, so that the integrity of the steel sheet pile is influenced, the recycling frequency is reduced, and the manufacturing cost is increased. 2) The steel sheet pile surrounding purlin is formed by combining and welding 2 to 3I-steel sheets, steel sheets are densely welded on the surface, namely a plurality of I-steel sheets are welded with the steel sheets into a whole, the subsequent recycling is influenced, and a plurality of full-welded welding seams can be generated, so that the construction period cannot be guaranteed. 3) In order to prevent the steel support from falling, the steel support is welded with the steel purlin, chiseling or cutting is needed to be separated in the dismantling process, welding spots are sparse and full welding is avoided sometimes for dismantling convenience, and safety risks exist. 4) In the whole working condition process of actual engineering, the support is in tension, and at the moment, the steel pipe and the enclosing purlin are very easy to fall off, so that engineering accidents and casualties can be caused. Therefore, there is a need for a steel sheet pile supporting device and a construction method thereof to solve the above problems. Disclosure of Invention One of the objectives of the present invention is to provide a steel sheet pile supporting device, which solves the above-mentioned problems in the prior art. In order to achieve the above purpose, the present invention provides the following technical solutions: a steel sheet pile supporting device comprises a pile plate main body, an enclosing purlin component and a steel pipe support, wherein the pile plate main body is fixedly connected with the enclosing purlin component through a hanging piece; The enclosing purlin assembly comprises a front plate, a rear plate and I-steel, wherein the front plate is connected with the rear plate through first bolts, at least two groups of first bolts are arranged, and the length of each first bolt is larger than the distance between the front plate and the rear plate; the I-steel is inserted between the front plate and the rear plate, the number of the I-steel is 2-3, the I-steel comprises 1 top I-steel, and the top I-steel is arranged at one end of the pile plate main body, which is close to the ground outside the pit; the steel pipe is propped to the steel pipe, and the steel pipe props to be connected with the front bezel, and the end that the steel pipe propped is close to front bezel one side is equipped with first stiffening rib, is equipped with first bolt hole on the first stiffening rib, and the front bezel is provided with two at least groups of support piece, and first stiffening rib passes through first bolt hole and support piece threaded connection. Further, a mounting hole and a second bolt hole are formed in one side, close to the ground outside the pit, of the pile plate main body, and the distance between the mounting hole and the edge of one side, close to the ground outside the pit, of the pile plate main body is 50mm. Further, the pendant includes link plate and forked link, is provided with the third bolt hole on the link plate, and forked link includes two symmetrical connection stabilizer blades, and the one end that the link plate was kept away from to every connection stabilizer blade all is provided with the fourth bolt hole, and the axis of fourth bolt hole is coa