CN110847047A - Open sea bare rock trestle construction method - Google Patents

Open sea bare rock trestle construction method Download PDF

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Publication number
CN110847047A
CN110847047A CN201911150450.8A CN201911150450A CN110847047A CN 110847047 A CN110847047 A CN 110847047A CN 201911150450 A CN201911150450 A CN 201911150450A CN 110847047 A CN110847047 A CN 110847047A
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China
Prior art keywords
steel pipe
cement
stable
pipe piles
pipe pile
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CN201911150450.8A
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CN110847047B (en
Inventor
张立响
邱荣军
达欣
陈浩
王子龙
许哲
郭信锋
杨玲
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THE FIRST CONSTRUCTION COMPANY OF CCCC SECOND HARBOR ENGINEERING Co.,Ltd.
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CCCC Second Harbor Engineering Co
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Priority to CN201911150450.8A priority Critical patent/CN110847047B/en
Publication of CN110847047A publication Critical patent/CN110847047A/en
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Classifications

    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00Methods or apparatus specially adapted for erecting or assembling bridges
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D19/00Keeping dry foundation sites or other areas in the ground
    • E02D19/02Restraining of open water
    • E02D19/04Restraining of open water by coffer-dams, e.g. made of sheet piles
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22Piles
    • E02D5/34Concrete or concrete-like piles cast in position ; Apparatus for making same
    • E02D5/38Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds

Abstract

A construction method of an open sea bare rock trestle comprises the steps of preliminarily operating the trestle according to a beam bank at a construction bank, driving a plurality of steel pipe piles into a rock stratum according to a quadrilateral structure direction through a pile driver on the beam bank operation bridge, installing a plurality of stable cofferdam frames at the root parts of the steel pipe piles of the quadrilateral structure, temporarily stabilizing through a positioning frame, connecting the steel pipe piles through a plurality of flat connecting rods, sequentially installing bailey frames on the steel pipe piles after connection, installing walkways on the bailey frames, installing guardrails on two sides of the walkways, arranging the walkways on the bailey frames to be flush with the beam bank operation bridge, installing the stable cofferdam frames connected with each other at the root parts of the plurality of steel pipe piles, effectively stabilizing the root parts of the plurality of steel pipe piles through the stable cofferdam frames, improving the stability of the steel pipe piles, and simplifying the construction difficulty of.

Description

Open sea bare rock trestle construction method
Technical Field
The invention relates to the field of trestle construction, in particular to a construction method of an open sea bare rock trestle.
Background
At present, a temporary trestle is very common in the engineering construction process, and the temporary trestle mainly comprises a steel pipe pile foundation, a main beam, a Bailey sheet and a panel structure. The temporary trestle brings great convenience to engineering construction, and the precondition for building most of domestic engineering temporary trestles is that the foundation pipe pile can be buried to a certain depth through a vibration hammer; however, the construction of the temporary trestle is limited by deep water, no covering layer and bare rock geology, which undoubtedly increases the construction cost in the subsequent construction process.
Chinese patent CN 103898910A 'an anchoring method for trestle steel pipe piles on bare landforms of submarine rocks', comprises the following steps: A. manufacturing a steel pipe pile auxiliary platform and preliminarily erecting the steel pipe pile; B. pouring underwater concrete in the steel pipe; C. drilling the concrete in the steel tube until the concrete reaches a preset depth below the surface of the foundation rock; D. and (5) putting the anchor rod in the drill hole and pressing mortar in. The method for anchoring the steel pipe pile of the trestle on the bare landform of the submarine rock solves the problem that the steel pipe pile on the bare landform of the submarine rock cannot be driven by traditional hammering or vibration, and realizes the stable connection of the steel pipe pile and the rock.
Although the method solves the problem of stable connection between the steel pipe pile and the rock, the steel pipe pile can generate slight deviation under the impact of external sea waves, and the root of the steel pipe pile does not obtain the stabilizing effect
Chinese patent CN106351242B "a steel trestle in deep water with large flow rate and exposed high-strength steep rock sea area and construction method thereof" discloses that the friction force between steel pipe piles and bedrock is increased by placing bottom elevation self-adaptive steel cofferdams at the outer sides of the steel pipe piles to pour underwater concrete, the stability of the steel pipe piles is improved, the deformation and collapse of the trestle caused by bottom opening slurry leakage and steel pipe pile sinking during drilling in the steel pipe piles are avoided, a single steel cofferdam is adopted to stabilize the root of the steel pipe pile, the construction method is complex, and a single steel cofferdam can only stabilize a single steel pipe pile, and the effect of stabilizing the root is small.
Disclosure of Invention
The invention mainly aims to provide a construction method of an open sea bare rock trestle, which solves the problems that the root of a steel pipe pile for the open sea bare rock trestle construction is stable, the temporary trestle is limited to be erected in deep water and without a covering layer and bare rock geology, and the construction cost is undoubtedly increased in the subsequent construction process.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a construction method of an open sea bare rock trestle comprises the steps of operating a bridge according to a beam bank preliminarily on a construction bank side, driving a plurality of steel pipe piles into a rock stratum according to a quadrilateral structure direction through a pile driver on the beam bank operating bridge, installing a plurality of stable cofferdam frames at the roots of the steel pipe piles of the quadrilateral structure, and temporarily stabilizing through a positioning frame;
and connecting the steel pipe piles through a plurality of flat connecting rods, sequentially installing Bailey frames on the steel pipe piles after connection, installing walkways on the Bailey frames, installing guardrails on two sides of the walkways, and installing the walkways on the Bailey frames to be parallel and level with the beam bank operating bridge.
In the preferred scheme, the construction method of the stable position of the steel pipe pile comprises the following steps:
s1, punching the interior of the steel pipe pile by using a drilling machine;
s2, claw out soil in the steel pipe pile by using a claw of a soil grabbing machine;
s3, hoisting a plurality of stable steel pipes into the steel pipe pile by using a crane;
s4, hoisting the tamping hammer by a crane, and driving the stable steel pipe in the steel pipe pile into a rock stratum at the bottom of the steel pipe pile;
s5, placing a reinforcement cage in the steel pipe pile, and placing a fixed reinforcement in the stable steel pipe;
and S5, pouring pile foundation concrete to stabilize the steel pipe pile.
In a preferred scheme, the method for stabilizing the cofferdam frame comprises the following steps:
a1, measuring the outer diameter of the steel pipe pile to manufacture a cement stabilizer;
a3, hinging the cement stabilizing legs on the same side through connecting steel;
a4, measuring the distance between the steel pipe piles at two sides, and hinging the cement stabilizing legs at two sides through connecting steel to enable the cement stabilizing legs to form a structure corresponding to the position of the steel pipe piles;
a5, a heavy cement pier is also arranged between the cement stabilizing legs on the two sides;
a6, pouring a plurality of binding feet at the bottom of the cement stabilizing foot and the cement pier;
a7, hoisting the stable cofferdam frame by using a crane, and enabling a plurality of cement stabilizer legs to pass through the steel pipe piles and slide to the lake bottom;
a8, hoisting the tamping hammer to the light hammer of the cement pier by using a crane, and pricking the stabbing feet of the stable cofferdam frame into the rock stratum at the bottom of the lake.
In a preferred scheme, the method for installing the trestle comprises the following steps:
b1, after the steel pipe pile is stabilized, connecting by utilizing a plurality of flat connecting rods;
b2, mounting a plurality of inclined supporting rods on the flat connecting rod to support the Bailey frames;
b3, mounting the next group of remote steel pipe piles at intervals of 8M-17M by the same mounting method;
and B4, installing a remote flat connecting rod between the two groups of steel pipe piles.
In the preferred scheme, the cement leg stabilizer comprises a plurality of cement legs, wherein holes are formed in the middle of the cement legs, and the cement legs are hinged through connecting steel;
the holes are used for sliding on the steel pipe pile.
In the preferred scheme, a plurality of binding feet are arranged below the cement stabilizing feet.
In the preferred scheme, a cement pier is arranged between the cement stabilizing legs, and two sides of the cement pier are hinged with the middle of the connecting steel.
In the preferred scheme, a plurality of binding feet are arranged on the lower side surface of the cement pier.
The invention provides a construction method of an open sea bare rock trestle, wherein a plurality of steel pipe pile roots are provided with mutually connected stable cofferdams, the stable cofferdams effectively stabilize the steel pipe pile roots, the stability of the steel pipe piles is improved, the construction difficulty of the trestle is simplified, offshore operation is converted into land platform operation, all resources can be transported to a construction pier position through a temporary trestle, so that the construction cost is saved on the premise of reducing the construction risk, and the construction method has high popularization value for difficult projects of the foundation construction of the temporary trestle piles.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 shows a pile driver of the present invention driving a steel pipe pile into bare rock;
FIG. 2 is a structural view of a hole digging machine of the present invention for digging a hole in a steel pipe pile;
FIG. 3 is a structural diagram of the steel pipe hanging stabilizing device of the present invention;
FIG. 4 is a structural view of the tamping of the stabilizing steel tube of the present invention;
FIG. 5 is a general construction configuration of the present invention;
FIG. 6 is a left side view block diagram of the present invention;
FIG. 7 is a front view of the stabilized cofferdam frame of the present invention;
FIG. 8 is a side view of the stabilized cofferdam frame of the present invention;
fig. 9 is a view of the structure of the stabilized cofferdam frame of the present invention:
FIG. 10 is a top view of the stabilizing cofferdam frame of the present invention;
a beam-shore operating bridge 1; a pile driver 2; a steel pipe pile 3; a positioning frame 4; a drilling machine 5; a soil grabbing machine 6; a crane (7); stabilizing the steel pipe 8; fixing the steel bars 801; a tamper hammer 9; a bailey frame 10; a guard rail 1001; a flat link 11; a remote flat link 12; stabilizing the cofferdam frame 13; cement foot stabilizing 1301; connecting steel 1302; pricking feet 1303; a center stabilized cement pier 1304; 14, cement; a reinforcement cage 15; a diagonal strut 16.
Detailed Description
As shown in fig. 1-10, a construction method of open sea bare rock trestle comprises the steps of primarily operating a bridge 1 according to a beam bank at a construction bank, driving a plurality of steel pipe piles 3 into a rock stratum according to a quadrilateral structure direction through a pile driver 2 on the beam bank operating bridge 1, installing a plurality of stable cofferdam frames 13 at the roots of the steel pipe piles 3 of the quadrilateral structure, temporarily stabilizing through a positioning frame 4, connecting the steel pipe piles 3 through a plurality of flat connecting rods 11, sequentially installing bailey frames 10 on the steel pipe piles 3 after connection, installing walkways on the bailey frames 10, installing guardrails 1001 on two sides of the walkways, and installing walkways on the bailey frames 10 to be flush with the beam bank operating bridge 1. In this way, the steel pipe pile 3 is driven into the rock formation in a quadrangular structure, and as shown in the position structure of the steel pipe pile 3 in fig. 8, the stable cofferdam frame 13 is installed at the root of the steel pipe pile 3 to stabilize the entire structure of the steel pipe pile 3, so that the construction method is simple, and the root of the steel pipe pile 3 can be stabilized more.
In the preferred scheme, the construction method for the stabilization position of the steel pipe pile 3 comprises the following steps:
s1, punching the interior of the steel pipe pile 3 by using a drilling machine 5;
s2, grabbing out soil in the steel pipe pile 3 by using a claw of the soil grabbing machine 6;
s3, hoisting a plurality of stable steel pipes 8 into the steel pipe pile 3 by using a crane 7;
s4, hoisting the tamping hammer 9 by the crane 7, and driving the stable steel pipe 8 in the steel pipe pile 3 into the rock stratum at the bottom of the steel pipe pile 3;
s5, placing a reinforcement cage 15 in the steel pipe pile 3, and placing a fixed reinforcement 801 in the stable steel pipe 8;
and S5, pouring pile foundation concrete to stabilize the steel pipe pile 3. According to the method, the steel pipe pile 3 is subjected to impact hole forming, then the stabilizing steel pipe 8 used for tensioning is placed, and the stabilizing steel pipe 8 plays a role in anchoring.
In a preferred embodiment, the method for stabilizing the cofferdam frame 13 comprises the following steps:
a1, manufacturing a cement stabilizer 1301 by measuring the outer diameter of the steel pipe pile 3;
a3, hinging the cement stabilizing feet 1301 on the same side through connecting steel 1302;
a4, measuring the distance between the steel pipe piles 3 on two sides, and hinging the cement stabilizing feet 1301 on the two sides through connecting steel 1302 to enable the cement stabilizing feet 1301 to form a structure corresponding to the positions of the steel pipe piles 3;
a5, a heavy cement pier 1304 is also arranged between the cement stabilizing feet 1301 on the two sides;
a6, pouring a plurality of binding feet 1303 at the bottoms of the cement stabilizing feet 1301 and the cement piers 1304;
a7, hoisting the stable cofferdam frame 13 by using a crane 7, and sliding a plurality of cement stabilizer feet 1301 into the lake bottom through the steel pipe pile 3;
a8, hoisting the tamping hammer 9 to the cement pier 1304 by the crane 7, and making the stabbing foot 1303 of the stable cofferdam frame 13 stabbed into the rock layer of the lake bottom. According to the method, the stable cofferdam frame 13 slides into the lake bottom through the stabilized steel pipe 8 and stabs into the rock stratum through the stabbing foot 1303 for stabilization, so that the stable cofferdam frame 13 is prevented from being impacted by sea waves, and in order to make the stable cofferdam frame 13 more stable, the ramming foot 1303 of the stable cofferdam frame 13 is stabbed into the rock stratum of the lake bottom by using the crane 7 to lift the ramming hammer 9 to the cement pier 1304 to lightly hammer.
In a preferred scheme, the method for installing the trestle comprises the following steps:
b1, stabilizing the steel pipe pile 3, and connecting by using a plurality of flat connecting rods 11;
b2, installing a plurality of inclined supporting rods 16 on the flat connecting rod 11 to support the Bailey frames 10;
b3, mounting the next group of remote steel pipe piles 3 at intervals of 8M-17M, and the mounting method is the same as that of the steel pipe piles;
and B4, installing a remote flat connecting rod 12 between the two groups of steel pipe piles 3. According to the method, the passing Bailey frames 10 and the walkways are installed after the steel pipe piles 3 are installed.
In a preferable scheme, the steel pipe pile comprises a plurality of cement stabilizing feet 1301, wherein holes are formed in the middles of the cement stabilizing feet 1301, the cement stabilizing feet 1301 are hinged through connecting steel 1302, and the holes are used for sliding on the steel pipe pile 3. The cement foot stabilizing 1301 is hinged through the connecting steel 1302, the stable position of the cement foot stabilizing 1301 cannot be influenced by the terrain of a rock stratum, and the hinge enables the cement foot stabilizing 1301 to be more flexible.
In a preferable scheme, a plurality of binding feet 1303 are arranged below the cement foot 1301. The foot binding 1303 stabilizes the cement foot 1301, so that the cement foot 1301 cannot easily move on the sea bottom.
In a preferable scheme, a cement pier 1304 is arranged between the cement foot-stabilizing parts 1301, and two sides of the cement pier 1304 are hinged with the middle of the connecting steel 1302. The cement pier 1304 acts as a counterweight.
In a preferable scheme, a plurality of binding feet 1303 are arranged on the lower side surface of the cement pier 1304. The binding 1303 on the underside of the pier 1304 makes the pier 1304 more stable.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention is defined by the claims, and equivalents including technical features described in the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.

Claims (8)

1. A construction method of open sea bare rock trestle is characterized by comprising the following steps: the construction method comprises the following steps that a bridge (1) is operated on a construction bank primarily according to a beam bank, a plurality of steel pipe piles (3) are driven into a rock stratum according to a quadrilateral structure direction through a pile driver (2) on the beam bank operation bridge (1), a plurality of stable cofferdam frames (13) are installed at the roots of the steel pipe piles (3) of the quadrilateral structure, and then temporary stabilization is carried out through a positioning frame (4);
and then the steel pipe piles (3) are connected through a plurality of flat connecting rods (11), the steel pipe piles (3) are sequentially provided with the Bailey frames (10) after connection, walkways are arranged on the Bailey frames (10), guardrails (1001) are arranged on two sides of the walkways, and the walkways on the Bailey frames (10) are arranged in parallel with the beam bank operating bridge (1).
2. The open sea bare rock trestle construction method according to claim 1, which is characterized in that: the stable position construction method of the steel pipe pile (3) comprises the following steps:
s1, punching the interior of the steel pipe pile (3) by a drilling machine (5);
s2, grabbing out soil in the steel pipe pile (3) by using a claw of the soil grabbing machine (6);
s3, hoisting a plurality of stable steel pipes (8) into the steel pipe pile (3) by using a crane (7);
s4, hoisting the tamping hammer (9) by a crane (7), and driving the stable steel pipe (8) in the steel pipe pile (3) into a rock stratum at the bottom of the steel pipe pile (3);
s5, placing a reinforcement cage (15) in the steel pipe pile (3), and placing a fixed reinforcement (801) in the stable steel pipe (8);
and S5, pouring the pile foundation concrete to stabilize the steel pipe pile (3).
3. The open sea bare rock trestle construction method according to claim 1, which is characterized in that: the method for stabilizing the cofferdam frame (13) comprises the following steps:
a1, measuring the outer diameter of the steel pipe pile (3) to manufacture a cement stabilizer (1301);
a3, hinging cement stabilizing feet (1301) on the same side through connecting steel (1302);
a4, measuring the distance between the steel pipe piles (3) on two sides, and hinging the cement stabilizing feet (1301) on the two sides through connecting steel (1302) to enable the cement stabilizing feet (1301) to form a structure corresponding to the positions of the steel pipe piles (3);
a5, a heavy cement pier (1304) is also arranged between the cement stabilizing feet (1301) on the two sides;
a6, pouring a plurality of binding feet (1303) at the bottoms of the cement stabilizing feet (1301) and the cement piers (1304);
a7, hoisting the stable cofferdam frame (13) by using a crane (7), and sliding a plurality of cement stabilizer feet (1301) into the lake bottom through the steel pipe pile (3);
a8, hoisting a tamping hammer (9) to a cement pier (1304) by a crane (7) to prick a pricking leg (1303) of the stable cofferdam frame (13) into the rock stratum at the bottom of the lake.
4. The open sea bare rock trestle construction method according to claim 1, which is characterized in that: the method for installing the trestle comprises the following steps:
b1, stabilizing the steel pipe piles (3), and connecting by utilizing a plurality of flat connecting rods (11);
b2, mounting a plurality of inclined supporting rods (16) on the flat connecting rod (11) to support the Bailey frames (10);
b3, mounting the next group of remote steel pipe piles (3) at intervals of 8M-17M, wherein the mounting method is the same as that of the steel pipe piles;
and B4, installing a remote flat connecting rod (12) between the two groups of steel pipe piles (3).
5. The stable cofferdam frame for open sea bare rock trestle construction of claim 3, which is characterized in that: the cement stabilizing device comprises a plurality of cement stabilizing feet (1301), wherein holes are formed in the middle of the cement stabilizing feet (1301), and the cement stabilizing feet (1301) are hinged through connecting steel (1302);
the holes are used for sliding on the steel pipe pile (3).
6. The stable cofferdam frame for open sea bare rock trestle construction of claim 5, which is characterized in that: a plurality of binding feet (1303) are arranged below the cement foot stabilizing (1301).
7. The stable cofferdam frame for open sea bare rock trestle construction of claim 5, which is characterized in that: and cement piers (1304) are arranged between the cement stabilizing feet (1301), and two sides of each cement pier (1304) are hinged with the middle of the connecting steel (1302).
8. The stable cofferdam frame for open sea bare rock trestle construction of claim 7, which is characterized in that: and a plurality of pricking pins (1303) are arranged on the lower side surface of the cement pier (1304).
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Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN112195779A (en) * 2020-08-11 2021-01-08 中国建筑第七工程局有限公司 Multifunctional trestle construction method suitable for thick pebble layer

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Publication number Priority date Publication date Assignee Title
CN112195779A (en) * 2020-08-11 2021-01-08 中国建筑第七工程局有限公司 Multifunctional trestle construction method suitable for thick pebble layer

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