CN110158467B - Sectional installation method for composite guy cable hanging basket in narrow region - Google Patents

Sectional installation method for composite guy cable hanging basket in narrow region Download PDF

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Publication number
CN110158467B
CN110158467B CN201810186978.XA CN201810186978A CN110158467B CN 110158467 B CN110158467 B CN 110158467B CN 201810186978 A CN201810186978 A CN 201810186978A CN 110158467 B CN110158467 B CN 110158467B
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China
Prior art keywords
installing
truss
bracket
main truss
longitudinal beam
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CN201810186978.XA
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CN110158467A (en
Inventor
雷明深
唐诚
李剑
李超
魏勇
赵显旬
李小勇
曾晋
吴君
陈传友
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CRCC Harbour and Channel Engineering Bureau Group Co Ltd
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CRCC Harbour and Channel Engineering Bureau Group Co Ltd
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    • 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

Abstract

The invention discloses a section installation method for a combined type guy cable hanging basket in a narrow area, which comprises the following steps: paving a distribution beam wood plate and a sliding track on a 0# block bracket, and installing a front arc head by using a tower crane, wherein the second step is as follows: utilizing a tower crane to install transverse connection and a second rear main longitudinal beam to form a whole body so that the weight is completely placed on the bracket, and the third step: and (3) slowly moving the hanging basket in place along the track by using a hoist, and carrying out the fourth step: hoisting the main longitudinal beam by the triangular main truss, and performing the fifth step: and (5) completely installing the inner triangular main truss and hoisting the main longitudinal beam, and sixthly: installing a bearing platform truss and an outer triangular main truss, and performing the ninth step: and installing the horizontal relation again, and step ten: paving a track, and installing pulleys under the main beam, wherein the step eleven is as follows: installing a contact steel belt between the sliding shoe and the bearing platform, and a twelfth step: and after the second bracket is anchored in place, the walking can be continued, and the fourteen steps are as follows: and burying a preformed hole at the root of the first sliding rail, and then assembling the subsequent main longitudinal beam III and the second sliding rail.

Description

Sectional installation method for composite guy cable hanging basket in narrow region
Technical Field
The invention relates to a building construction method, in particular to a section installation method for a combined type guy rope hanging basket in a narrow region.
Background
The composite guyed cradle is a large-scale device which is used for bearing the dead weight of a beam body and the construction load and continuously propelling construction forwards. The cradle is formed by integrating the construction process characteristics of a middle pivot cradle and a guyed cradle, and is heavier and larger in scale than a common cradle. The installation mode of the combined type guy rope hanging basket is particularly important, and the conventional installation method mainly comprises two methods, namely a method for erecting a temporary construction platform and then assembling the combined type guy rope hanging basket in situ by using large-scale hoisting equipment; and secondly, a temporary continuous hoisting system is firstly installed on the beam surface by using hoisting equipment, then a bottom basket system is completed on the ground right below the preset position, and the whole bottom basket is lifted to the preset height by using the installed hoisting system and is installed in place. However, with the increase of the investment of national infrastructure in recent years, bridges need to be built in many depths of mountains, and when the bridges are constructed in areas with large height and narrow places according to the construction method, the cost is high, and some of the areas need to be excavated to vacate the places by mountain excavation, so that the safety risk is extremely inexplicable, and therefore, an installation construction method which is more practical in site is needed, the natural disaster risk can be reduced without damaging the natural environment of the site, and the installation task can be completed safely, quickly and economically.
Disclosure of Invention
The invention aims to provide a section installation method of a combined type guy cable hanging basket in a narrow area, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a method for installing combined guy cable hanging baskets in sections in a narrow region comprises the following steps;
the method comprises the following steps: spreading a distribution beam wood plate and a sliding track on a 0# block bracket, and mounting a front arc head by using a tower crane
Step two: the transverse connection and the second rear main longitudinal beam are installed by a tower crane to form a whole, so that the weight is completely placed on the bracket;
step three: slowly moving the hanging basket to a position along the rail by using a 5t hoist;
step four: after the arc-shaped section moves to the right position, mounting a triangular main truss above the arc head section, and hoisting the main longitudinal beam to reduce the stress of the bracket and then mounting a second arc-shaped section;
step five: mounting and hoisting the main longitudinal beams of the inner triangular main truss;
step six: installing a bearing platform truss and an outer triangular main truss;
step seven: installing various construction platforms, sliding plates and templates;
step eight: after the construction of the No. 0 block is finished, installing a tension structure and a thrust structure;
step nine: dismantling the transverse connection of the upper inner triangular main truss and the upper outer triangular main truss, enabling the upper inner triangular main truss to walk for 3.6m and the upper outer triangular main truss to walk for 3.4m, and installing the transverse connection again after all the trusses walk in place;
step ten: paving a track, installing pulleys below the main beam, and temporarily anchoring the middle bracket on the No. 1 bottom plate when the main longitudinal beam slides out by about 20 cm;
step eleven: installing a contact steel belt between the sliding shoe and the bearing platform;
step twelve: walking for 2m, and continuing walking until the second bracket is anchored in place;
step thirteen: anchoring the walking section and then installing the lengthened main longitudinal beam II and the first sliding rail;
fourteen steps: constructing 1# block section, burying the first slide rail root preformed hole underground, moving for 2.6m by means of the bottom slide rail, assembling the subsequent main longitudinal beam III and the second slide rail, moving for 3.4m after installation, finishing the whole installation of the hanging basket, and constructing the 2# block section standard section.
As a further scheme of the invention: and in the fourth step, the triangular main truss on the mounting beam is hoisted and then anchored and a hoisting jack is mounted.
As a still further scheme of the invention: in the first step, the distribution beam is firmly welded with the bracket, and the bottom of the distribution beam is provided with a transverse inclined strut.
Compared with the prior art, the invention has the beneficial effects that: the method effectively solves the problems that the bottom basket in the area with larger bridge height and narrow field is lifted to the preset height and installed in place for hoisting, the bottom basket can be hoisted without excavating mountains, the construction cost is greatly reduced, the safety and reliability are high, the local natural environment is not damaged, and the natural disaster risk is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a sectional installation method of a combined type guyed cradle in a narrow area.
Fig. 2 is a schematic structural diagram of a main longitudinal beam and a tower crane which are not installed in a narrow-area combined type guyed hanging basket subsection installation method.
Fig. 3 is a schematic structural diagram of a composite guyed cradle section installation method in a narrow area after a main longitudinal beam is hoisted and installed.
Fig. 4 is a final forming diagram in the installation method of the combined guyed cradle sections in a narrow area.
In the figure: 1-0# blocks; 2-a bracket; 3-main longitudinal girder platform truss; 4-tripod; 5-arc head; 6-distribution beam.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 4, in an embodiment of the present invention, a method for installing a combined type guy cable hanging basket section in a narrow area includes the following steps:
the method comprises the following steps: paving a distribution beam wood plate and a sliding track on a 0# block bracket, and mounting a front arc head by using a tower crane;
step two: the transverse connection and the second roof truss are installed by the tower crane, and then the main longitudinal beams form a whole, so that the weight is completely placed on the bracket, and the side turning of the main longitudinal beams caused by insufficient balance weight is avoided;
step three: slowly moving the hanging basket to a position along the rail by using a 5t hoist;
step four: after the arc-shaped section moves to the right position, mounting a triangular main truss above the arc head section, and hoisting the main longitudinal beam to reduce the stress of the bracket and then mounting a second arc-shaped section;
step five: mounting and hoisting the main longitudinal beams of the inner triangular main truss;
step six: installing a bearing platform truss and an outer triangular main truss;
step seven: installing various construction platforms, sliding plates and templates;
step eight: after the construction of the No. 0 block is finished, installing a tension structure and a thrust structure;
step nine: dismantling the transverse connection of the upper inner triangular main truss and the upper outer triangular main truss, enabling the upper inner triangular main truss to walk for 3.6m and the upper outer triangular main truss to walk for 3.4m, and installing the transverse connection again after all the trusses walk in place;
step ten: paving a track, installing pulleys below the main beam, and temporarily anchoring the middle bracket on the No. 1 bottom plate when the main longitudinal beam slides out by about 20 cm;
step eleven: installing a contact steel belt between the sliding shoe and the bearing platform;
step twelve: walking for 2m, and continuing walking until the second bracket is anchored in place;
step thirteen: anchoring the walking section and then installing the lengthened main longitudinal beam II and the first sliding rail;
fourteen steps: constructing 1# block section, burying the first slide rail root preformed hole underground, moving for 2.6m by means of the bottom slide rail, assembling the subsequent main longitudinal beam III and the second slide rail, moving for 3.4m after installation, finishing the whole installation of the hanging basket, and constructing the 2# block section standard section.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (3)

1. A method for installing combined guy cable hanging baskets in sections in a narrow region is characterized by comprising the following steps;
the method comprises the following steps: paving a distribution beam wood plate and a sliding track on a 0# block bracket, and mounting a front arc head by using a tower crane;
step two: the transverse connection and the second rear main longitudinal beam are installed by a tower crane to form a whole, so that the weight is completely placed on the bracket;
step three: slowly moving the hanging basket to a position along the rail by using a 5t hoist;
step four: after the arc head section moves to the right position, mounting a triangular main truss above the arc head section, and hoisting a main longitudinal beam to enable the bracket to reduce stress and then mounting a second truss arc section, wherein the triangular main truss comprises an inner triangular main truss and an outer triangular main truss;
step five: mounting and hoisting the main longitudinal beams of the inner triangular main truss;
step six: installing a bearing platform truss and an outer triangular main truss;
step seven: installing various construction platforms, sliding plates and templates;
step eight: after the construction of the No. 0 block is finished, installing a tension structure and a thrust structure;
step nine: dismantling the transverse connection of the upper inner triangular main truss and the upper outer triangular main truss, enabling the upper inner triangular main truss to walk for 3.6m and the upper outer triangular main truss to walk for 3.4m, and installing the transverse connection again after all the trusses walk in place;
step ten: paving a track, installing pulleys below the main beam, and temporarily anchoring the middle bracket on the No. 1 bottom plate when the main longitudinal beam slides out by about 20 cm;
step eleven: installing a contact steel belt between the sliding shoe and the bearing platform;
step twelve: walking for 2m, and continuing walking until the second bracket is anchored in place;
step thirteen: anchoring the walking section and then installing the lengthened main longitudinal beam II and the first sliding rail;
fourteen steps: constructing 1# block section, burying the first slide rail root preformed hole underground, moving for 2.6m by means of the bottom slide rail, assembling the subsequent main longitudinal beam III and the second slide rail, moving for 3.4m after installation, finishing the whole installation of the hanging basket, and constructing the 2# block section standard section.
2. The method for installing the sections of the combined guy cable cradle in the narrow area according to claim 1, wherein the triangular main truss on the installation beam is hoisted in the fourth step, and then is anchored and a lifting jack is installed.
3. The method for installing the sections of the combined guy cable hanging basket in the narrow area according to claim 1, wherein in the first step, the distribution beam is firmly welded with the bracket, and a transverse inclined strut is added at the bottom of the distribution beam.
CN201810186978.XA 2018-03-07 2018-03-07 Sectional installation method for composite guy cable hanging basket in narrow region Active CN110158467B (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1123861A (en) * 1995-08-28 1996-06-05 铁道部大桥工程局 Construction of prestressed concrete stayed cable bridge
CN201952737U (en) * 2011-01-30 2011-08-31 中交三航局第三工程有限公司 Stay rope hanging basket suitable for wide double plane cable stayed bridge
CN103243658A (en) * 2013-05-16 2013-08-14 中交路桥华南工程有限公司 Guyed traveler for cable-stayed bridge and assembly method for guyed traveler
CN105421246A (en) * 2015-12-23 2016-03-23 中铁大桥局集团第五工程有限公司 Installation method of towing cable hanging baskets
RU2612050C1 (en) * 2015-10-22 2017-03-02 Федеральное бюджетное образовательное учреждение высшего профессионального образования "Морской государственный университет имени адмирала Г.И. Невельского" Construction method of cable-stayed bridge above sea navigable strait
CN207073074U (en) * 2017-06-29 2018-03-06 中国铁建大桥工程局集团有限公司 A kind of box-like bracket of Hanging Basket assisted group

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1123861A (en) * 1995-08-28 1996-06-05 铁道部大桥工程局 Construction of prestressed concrete stayed cable bridge
CN201952737U (en) * 2011-01-30 2011-08-31 中交三航局第三工程有限公司 Stay rope hanging basket suitable for wide double plane cable stayed bridge
CN103243658A (en) * 2013-05-16 2013-08-14 中交路桥华南工程有限公司 Guyed traveler for cable-stayed bridge and assembly method for guyed traveler
RU2612050C1 (en) * 2015-10-22 2017-03-02 Федеральное бюджетное образовательное учреждение высшего профессионального образования "Морской государственный университет имени адмирала Г.И. Невельского" Construction method of cable-stayed bridge above sea navigable strait
CN105421246A (en) * 2015-12-23 2016-03-23 中铁大桥局集团第五工程有限公司 Installation method of towing cable hanging baskets
CN207073074U (en) * 2017-06-29 2018-03-06 中国铁建大桥工程局集团有限公司 A kind of box-like bracket of Hanging Basket assisted group

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
梅溪河特大桥牵索挂蓝高空拼装技术;张会昌等;《桥隧工程》;20101231;第134-136页 *

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