CN114717958A - Method for installing large specially-made Bailey beam - Google Patents
Method for installing large specially-made Bailey beam Download PDFInfo
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- CN114717958A CN114717958A CN202210369490.7A CN202210369490A CN114717958A CN 114717958 A CN114717958 A CN 114717958A CN 202210369490 A CN202210369490 A CN 202210369490A CN 114717958 A CN114717958 A CN 114717958A
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- bailey
- special
- hoisting
- beams
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D15/00—Movable or portable bridges; Floating bridges
- E01D15/12—Portable or sectional bridges
- E01D15/133—Portable or sectional bridges built-up from readily separable standardised sections or elements, e.g. Bailey bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
Abstract
The invention provides a method for installing a large special Bailey beam, and belongs to the technical field of bridge construction. The method for installing the large special Bailey beam comprises the following steps: the method comprises the following steps: s1: installing a temporary supporting and cushioning beam at the top of each midspan pile; s2: sequentially hoisting the second two specially-made Bailey pieces; s3: sequentially hoisting a third special Bailey sheet; s4: sequentially hoisting 1, 2 and 3 subsequent special bailey pieces, converting the hoisting of the other side by a tower crane, and fixing all the special bailey pieces; s5: the Bailey sheet is used as a longitudinal beam, a simple horizontal moving device is arranged, and two 20t chain-block lifting cross beams are hung; the cross beam is transported to a designated position by the floating platform, and a gap between the cross beam and the longitudinal beam is supported by a steel plate; s6: the falling Bailey beam integrally falls onto the cross beam; and each group of Bailey beams adopt 32t screw jacks, and sequentially drop the tops and remove the supporting pads until the Bailey beams drop onto the tops of the cross beams. The invention solves the problem that no large-scale water equipment lifts overweight components; the hoisting safety risk is controllable.
Description
Technical Field
The invention relates to the technical field of bridge engineering construction, in particular to a method for installing a large special Bailey beam.
Background
In the safe construction process of the bridge, a main bridge of the bridge is a beam-arch combined system bridge, a navigation hole is arranged in a middle span of a main bridge bracket, and a longitudinal beam adopts a special Bailey sheet; the size of the Bailey sheet is 6.75 multiplied by 2.88m, the weight of the single sheet is 2.76t, and due to the limitation of an approach road and an underwater channel, the installation equipment can only be installed by adopting a TC7052 type tower crane.
Because the hoisting weight of the tower crane is limited, the weight of a single Bailey lower cross beam is 19.3t, the Bailey lower cross beam cannot be directly hoisted, the Bailey lower cross beam is required to be installed in place through the tower crane to form a full-length longitudinal beam, and then the full-length longitudinal beam is utilized to lift the overweight cross beam, so that the overweight component of the equipment is difficult to hoist, and the hoisting safety risk is higher.
Disclosure of Invention
In order to make up for the defects, the invention provides a method for installing a large special Bailey beam, and aims to solve the problems that equipment is difficult to hoist an overweight member and has high hoisting safety risk.
The invention is realized by the following steps:
the invention provides a method for installing a large special Bailey beam, which comprises the following steps:
s1: mounting a temporary supporting beam on the top of each midspan pile, wherein the height of the temporary supporting beam is 15-25cm higher than that of the designed 6-piece combined beam, and a beam mounting space is reserved; hoisting 4 rows of three specially-made Bailey pieces on the pile top by using the tower crane, and fixing the specially-made Bailey pieces after hoisting respectively;
s2: sequentially hoisting the second two specially-made Bailey pieces;
s3: sequentially hoisting a third special Bailey sheet;
s4: sequentially hoisting the subsequent 1, 2 and 3 special bailey pieces, converting the hoisting of the other side by a tower crane, and fixing all the pieces;
s5: the Bailey sheet is used as a longitudinal beam, a simple horizontal moving device is arranged, and two 20t chain-block lifting cross beams are hung; the cross beam is transported to a designated position by the floating platform, and a gap between the cross beam and the longitudinal beam is supported by a steel plate;
s6: after the pile top cross beam is completely replaced, the falling Bailey beam integrally falls onto the cross beam; and each group of Bailey beams adopt 32t screw jacks, and sequentially drop the tops and remove the supporting pads until the Bailey beams drop onto the tops of the cross beams.
In an embodiment of the present invention, the temporary bolster beams and the composite beams in step S1 are both I63 a.
In an embodiment of the present invention, the temporary supporting beams in step S1 are set to be not less than four groups.
In an embodiment of the invention, the extension radius range of the tower crane in the step S1 is 35m to 63m, and the hoisting load of the tower crane is 4.8t to 10.8 t.
In one embodiment of the invention, the beret size is 6.75m × 2.88 m.
In one embodiment of the invention, the model of the tower crane is TC 7052.
In one embodiment of the present invention, in the step S4, the gap between the cross beam and the longitudinal beam is 15-25 cm.
In one embodiment of the present invention, each group of beret beams in the step S6 uses 4 groups of 32t screw jacks.
The invention has the beneficial effects that: the main construction method comprises the steps of firstly installing Bailey sheets on the two transverse sides of a bridge on a temporary cross beam on a steel pipe column, lifting a supporting cross beam by using the installed Bailey sheet group after one Bailey sheet group is installed, replacing the temporary cross beam, then dropping a Bailey sheet longitudinal beam, completing cross beam installation, and then installing other residual Bailey sheets. The problem that no large-scale water equipment lifts the overweight component is solved; the hoisting safety risk is controllable.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is a construction diagram of a method step one for installing a large-scale special beret beam provided by the embodiment of the invention;
FIG. 2 is a construction diagram of a second step of a method for installing a large-scale special Bailey beam, which is provided by the embodiment of the invention;
fig. 3 is a construction diagram of the third step of the method for installing the large-scale special bailey beam provided by the embodiment of the invention;
FIG. 4 is a construction drawing of the fourth step of the method for installing the large-scale special Bailey beam provided by the embodiment of the invention;
fig. 5 is a construction diagram of the fifth step of the method for installing the large-scale special-made beret beam provided by the embodiment of the invention;
fig. 6 is a construction diagram of six steps of a method for installing a large-scale special-made beret beam according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation that the first and second features are not in direct contact, but are in contact via another feature between them. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Example 1
Referring to fig. 1-6, the present invention provides a technical solution: a method for installing a large special Bailey beam comprises the following steps:
s1: mounting a temporary supporting beam on the top of each midspan pile, wherein the height of the temporary supporting beam is 15cm higher than that of a designed 6-spliced combined beam, and reserving a beam mounting space; hoisting 4 rows of three specially-made Bailey pieces on the pile top by using the tower crane, and fixing the specially-made Bailey pieces after hoisting respectively;
s2: sequentially hoisting the second two specially-made Bailey pieces;
s3: sequentially hoisting a third special Bailey sheet;
s4: sequentially hoisting 1, 2 and 3 subsequent special bailey pieces, converting the hoisting of the other side by a tower crane, and fixing all the special bailey pieces;
s5: the Bailey sheet is used as a longitudinal beam, a simple horizontal moving device is arranged, and two 20t chain-block lifting cross beams are hung; the cross beam is transported to a designated position by the floating platform, and a gap between the cross beam and the longitudinal beam is supported by a steel plate;
s6: after the pile top cross beam is completely replaced, the falling Bailey beam integrally falls onto the cross beam; and each group of Bailey beams adopt 32t screw jacks, and sequentially fall to the top and remove the support pads until the Bailey beams fall to the top of the cross beam.
In an embodiment of the invention, the types of the temporary support beam and the combined beam in the step S1 are I63a, the number of the temporary support beams in the step S1 is not less than four, the extension radius of the tower crane in the step S1 is 35m, the hoisting load of the tower crane is 4.8t, the size of the bailey piece is 6.75m × 2.88m, the type of the tower crane is a TC7052 type tower crane, the gap between the beam and the longitudinal beam in the step S4 is 15cm, and each group of the bailey beams in the step S6 is 4 groups of 32t screw jacks.
Example 2
Referring to fig. 1-6, the present invention provides a technical solution: a method for installing a large special Bailey beam comprises the following steps:
s1: mounting a temporary supporting beam on the top of each midspan pile, wherein the height of the temporary supporting beam is 20cm higher than that of the designed 6-spliced composite beam, and reserving a beam mounting space; hoisting 4 rows of three specially-made Bailey pieces on the pile top by using the tower crane, and fixing the specially-made Bailey pieces after hoisting respectively;
s2: sequentially hoisting the second two specially-made Bailey pieces;
s3: sequentially hoisting a third special Bailey sheet;
s4: sequentially hoisting 1, 2 and 3 subsequent special bailey pieces, converting the hoisting of the other side by a tower crane, and fixing all the special bailey pieces;
s5: the Bailey sheet is used as a longitudinal beam, a simple horizontal moving device is arranged, and two 20t chain-block lifting cross beams are hung; the cross beam is transported to a designated position by the floating platform, and a gap between the cross beam and the longitudinal beam is supported by a steel plate;
s6: after the pile top cross beam is completely replaced, the falling Bailey beam integrally falls onto the cross beam; and each group of Bailey beams adopt 32t screw jacks, and sequentially fall to the top and remove the support pads until the Bailey beams fall to the top of the cross beam.
In an embodiment of the invention, the types of the temporary supporting and cushioning beams and the combined beams in the step S1 are I63a, at least four groups of temporary supporting and cushioning beams are arranged in the step S1, the extension radius of the tower crane in the step S1 is 49m, the hoisting and bearing capacity of the tower crane is 7.8t, the size of the bailey piece is 6.75m × 2.88m, the type of the tower crane is a TC7052 type tower crane, the gap between the beam and the longitudinal beam in the step S4 is 20cm, and each group of the bailey beams in the step S6 is 4 groups of 32t screw jacks.
Example 3
Referring to fig. 1-6, the present invention provides a technical solution: a method for installing a large special Bailey beam comprises the following steps:
s1: mounting a temporary supporting beam on the top of each midspan pile, wherein the height of the temporary supporting beam is 25cm higher than that of the designed 6-spliced composite beam, and reserving a beam mounting space; hoisting 4 rows of three specially-made Bailey pieces on the pile top by using the tower crane, and fixing the specially-made Bailey pieces after hoisting respectively;
s2: sequentially hoisting the second two specially-made Bailey pieces;
s3: sequentially hoisting a third special Bailey sheet;
s4: sequentially hoisting 1, 2 and 3 subsequent special bailey pieces, converting the hoisting of the other side by a tower crane, and fixing all the special bailey pieces;
s5: the Bailey sheet is used as a longitudinal beam, a simple horizontal moving device is arranged, and two 20t chain-block lifting cross beams are hung; the cross beam is transported to a designated position by the floating platform, and a gap between the cross beam and the longitudinal beam is supported by a steel plate;
s6: after the pile top cross beam is completely replaced, the falling Bailey beam integrally falls onto the cross beam; and each group of Bailey beams adopt 32t screw jacks, and sequentially drop the tops and remove the supporting pads until the Bailey beams drop onto the tops of the cross beams.
In an embodiment of the invention, the types of the temporary support beam and the combined beam in the step S1 are I63a, the number of the temporary support beams in the step S1 is not less than four, the extension radius of the tower crane in the step S1 is 63m, the hoisting load of the tower crane is 10.8t, the size of the bailey piece is 6.75m × 2.88m, the type of the tower crane is a TC7052 type tower crane, the gap between the beam and the longitudinal beam in the step S4 is 25cm, and each group of the bailey beams in the step S6 is 4 groups of 32t screw jacks.
In conclusion: the main construction method comprises the steps of firstly installing Bailey sheets on the two transverse sides of a bridge on a temporary cross beam on a steel pipe column, lifting a supporting cross beam by using the installed Bailey sheet group after one Bailey sheet group is installed, replacing the temporary cross beam, then dropping a Bailey sheet longitudinal beam, completing cross beam installation, and then installing other residual Bailey sheets. The problem that no large-scale water equipment lifts the overweight component is solved; the hoisting safety risk is controllable.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A method for installing a large-scale special Bailey beam is characterized by comprising the following steps:
s1: mounting a temporary supporting beam on the top of each midspan pile, wherein the height of the temporary supporting beam is 15-25cm higher than that of the designed 6-piece combined beam, and a beam mounting space is reserved; hoisting 4 rows of three specially-made Bailey pieces on the pile top by using the tower crane, and fixing the specially-made Bailey pieces after hoisting respectively;
s2: sequentially hoisting the second two specially-made Bailey pieces;
s3: sequentially hoisting a third special Bailey sheet;
s4: sequentially hoisting 1, 2 and 3 subsequent special bailey pieces, converting the hoisting of the other side by a tower crane, and fixing all the special bailey pieces;
s5: the Bailey sheet is used as a longitudinal beam, a simple horizontal moving device is arranged, and two 20t chain-block lifting cross beams are hung; the cross beam is transported to a designated position by the floating platform, and a gap between the cross beam and the longitudinal beam is supported by a steel plate;
s6: after the pile top cross beam is completely replaced, the falling Bailey beam integrally falls onto the cross beam; and each group of Bailey beams adopt 32t screw jacks, and sequentially fall to the top and remove the support pads until the Bailey beams fall to the top of the cross beam.
2. The method of claim 1, wherein the temporary bolster beams and the composite beams in step S1 are both I63a type.
3. The method for installing large-scale special Bailey beams in claim 1, wherein the temporary support beam in step S1 is not less than four groups.
4. The method for installing the large special Bailey beam according to claim 1, wherein the extension radius of the tower crane in the step S1 is 35m-63m, and the hoisting load of the tower crane is 4.8t-10.8 t.
5. The method for installing the large-scale special Bailey beam in claim 1, wherein the Bailey pieces are 6.75m x 2.88m in size.
6. The method for installing the large special Bailey beam according to claim 1, wherein the model of the tower crane is TC 7052.
7. The method for installing the large-scale special Bailey beam in claim 5, wherein the gap between the cross beam and the longitudinal beam in the step S4 is 15-25 cm.
8. The method for installing large special Bailey beams in claim 7, wherein each Bailey beam in the step S6 adopts 4 groups of 32t screw jacks.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210369490.7A CN114717958A (en) | 2022-04-09 | 2022-04-09 | Method for installing large specially-made Bailey beam |
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| CN202210369490.7A CN114717958A (en) | 2022-04-09 | 2022-04-09 | Method for installing large specially-made Bailey beam |
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