CN115162282B - Flexible steel dam construction method - Google Patents
Flexible steel dam construction method Download PDFInfo
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- CN115162282B CN115162282B CN202210975807.1A CN202210975807A CN115162282B CN 115162282 B CN115162282 B CN 115162282B CN 202210975807 A CN202210975807 A CN 202210975807A CN 115162282 B CN115162282 B CN 115162282B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 184
- 239000010959 steel Substances 0.000 title claims abstract description 184
- 238000010276 construction Methods 0.000 title claims abstract description 59
- 238000003466 welding Methods 0.000 claims abstract description 90
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 238000012545 processing Methods 0.000 claims abstract description 8
- 238000013461 design Methods 0.000 claims abstract description 5
- 238000005520 cutting process Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 46
- 238000001125 extrusion Methods 0.000 claims description 32
- 230000008569 process Effects 0.000 claims description 12
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 8
- 238000004873 anchoring Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/02—Fixed barrages
- E02B7/04—Dams across valleys
- E02B7/08—Wall dams
- E02B7/12—Arch dams
Abstract
The invention belongs to the technical field of hydraulic engineering, and particularly relates to a flexible steel dam construction method, which comprises the following steps of S1: processing and manufacturing, and orderly numbering; cutting, blanking and processing according to design requirements to finish the manufacture of the steel plate unit and the channel steel; respectively numbering the steel plate units in each dam body layer in sequence; s2: constructing a concrete base; s3: constructing a dam: respectively welding and assembling the steel plate units in each dam layer in sequence to form a plurality of dam layers; a plurality of dam body layers are fixed in an auxiliary mode and are stacked and welded to form the dam body; s4: constructing a concrete dam abutment; the concrete dam abutment is connected with the dam body and the concrete base to form the flexible steel dam. The invention improves the construction method of the flexible steel dam, so that the construction speed can be greatly improved as a whole, and because the welding of each dam body layer is carried out on the ground, compared with the original online high-place construction, the floor construction is more convenient and simpler, and the welding construction speed of the dam body can be improved.
Description
Technical Field
The invention relates to the technical field of hydraulic engineering, in particular to a construction method of a flexible steel dam.
Background
The invention patent with the authority of CN113481945B applied by the applicant discloses a flexible steel dam construction method, wherein when the dam body is welded, a piece of steel plate units are stacked and welded on site to form the dam body, similar to the construction method of building site barrier walls, but the construction speed of the method is not very fast in practical application, and the construction method is to be improved. For this reason, the inventor has intensively studied and proposed another construction method of the flexible steel dam, mainly aiming at the improvement of how to fix the steel plates in the dam body and improve the welding speed.
Disclosure of Invention
In order to solve the problems in the prior art, a construction method of a flexible steel dam is provided, and the purpose is to improve the welding construction speed of the dam body and reduce the time used in the construction link, so that the overall construction period of the flexible steel dam is finally shortened.
The technical scheme adopted for solving the technical problems is as follows:
the invention provides a construction method of a flexible steel dam, wherein the flexible steel dam comprises a dam body, a concrete base, a concrete dam abutment and channel steel, wherein the channel steel is arranged in the concrete base, and the bottom of the dam body is connected in a notch of the channel steel; the dam body comprises a plurality of layers of dam body layers which are mutually overlapped from bottom to top, and each layer of dam body layer comprises a plurality of steel plate units which are mutually welded; the method for constructing the flexible steel dam is characterized by comprising the following steps of:
s1: processing and manufacturing, orderly numbering
Cutting, blanking and processing according to design requirements to finish the manufacture of the steel plate unit and the channel steel; respectively numbering the steel plate units in each dam body layer in sequence;
s2: construction of concrete foundation
Cleaning a river channel, supporting templates in the river channel, pouring concrete to form a concrete base, and embedding channel steel during pouring;
s3: constructing a dam
S31, respectively welding and assembling the steel plate units in each dam layer in sequence to form a plurality of dam layers: respectively arranging lifting holes and positioning holes on the steel plate units positioned at two ends of each dam body layer, wherein the lifting holes are positioned above the positioning holes;
s32, placing a first dam layer positioned at the bottommost part in a notch of the channel steel, and welding and fixing the first dam layer and the channel steel;
s33, hoisting Kong Diaoyun the second dam layer to enable the second dam layer to be stacked above the first dam layer, fixing the second dam layer in an auxiliary mode, and then welding the second dam layer with the first dam layer; repeating the process to finish auxiliary fixation and stacking welding of the rest dam body layers to form the dam body;
s4: construction of concrete dam abutment
And respectively supporting templates at two ends of the dam body, pouring concrete to form the concrete dam abutment, and connecting the concrete dam abutment with the dam body and the concrete base to form the flexible steel dam.
Preferably, the specific method for welding and assembling the steel plate units in each dam layer in the step S31 in sequence respectively comprises the following steps: adopting a welding auxiliary tool to carry out auxiliary welding, wherein the welding auxiliary tool comprises a bottom plate, one side of the bottom plate is connected with a positioning plate, the bottom plate is also connected with a support, at least two groups of holders are hinged on the support, each holder comprises a hollow swing rod, the swing rods are connected with telescopic rods in a sliding manner, the bottom ends of the telescopic rods are inserted into the swing rods, a sliding block is connected in the swing rods in a sliding manner, and the bottom ends of the telescopic rods are connected with the sliding block; the inner wall of the swing rod is also fixedly connected with a spring seat, and a spring is connected between the spring seat and the sliding block; the top end of the telescopic rod is connected with a steel ball;
the specific operation method of the welding auxiliary tool comprises the following steps:
(1) according to the number, a first steel plate unit positioned at the head end in a first dam body layer is placed on a base, the steel plate unit is clung to the surface of a positioning plate, and a first group of retainers are rotated, so that steel balls in the first group of retainers are propped against the surface of the steel plate unit;
(2) sequentially placing the second steel plate units according to the numbers, enabling the second steel plate units to cling to the surface of the positioning plate, and ensuring that the second steel plate units are adjacent to the first steel plate units; then rotating the second group of fixtures to enable the steel balls in the second group of fixtures to prop against the surface of the steel plate unit, and fixing the second steel plate unit; then, welding the second steel plate unit and the first steel plate unit together; according to the principle, a third steel plate unit is orderly placed according to the number, the position of a second group of retainers is adjusted in a rotating mode, so that steel balls in the second group of retainers are propped against the surface of the third steel plate unit, and then the third steel plate unit and the second steel plate unit are welded together; repeating the process, and welding to obtain a first dam body layer;
(3) taking the first dam body layer off from the welding auxiliary tool, and fully welding all welding seams on both sides to obtain a first dam body layer finished product;
(4) and repeating the above processes to obtain a second-layer dam layer finished product and a third-layer dam layer finished product … … Nth-layer dam layer finished product until all the dam layer finished products are obtained by welding.
Preferably, the specific method for auxiliary fixation of the dam body layer in S33 is as follows: adopting an auxiliary positioning tool to carry out auxiliary fixation, wherein the auxiliary positioning tool comprises a main arm, two ends of the main arm are respectively connected with a threaded rod capable of penetrating through a hoisting hole and a positioning hole, and the main arm and the threaded rod form a U-shaped structure; the outer wall of the main arm is connected with an extrusion column I; the threaded rods are respectively sleeved with a sleeve in sliding connection, and an extrusion column II is connected between the sleeves; a clamping and positioning space is formed between the extrusion column II and the extrusion column I; the threaded rod is connected with a locking nut in a threaded manner;
the specific operation method of the auxiliary positioning tool is as follows:
(1) after the dam layer positioned on the upper layer is hoisted above the dam layer positioned on the lower layer, the main arm is held by hand, and one of the threaded rods penetrates through the positioning hole of the dam layer positioned on the upper layer; penetrating another threaded rod through a lifting hole of a dam body layer positioned at the lower layer;
(2) sleeving sleeves at two ends of the extrusion column II on the threaded rod;
(3) and installing and screwing the locking nut, so that the extrusion column II and the extrusion column I clamp the upper dam layer and the lower dam layer, and auxiliary fixation between the upper dam layer and the lower dam layer is completed.
Preferably, a plurality of anchoring ribs are welded on the outer wall of the extrusion column II.
Preferably, the outer wall of the main arm is connected with a handrail.
Preferably, the extrusion column I and the extrusion column II are both cylindrical or semi-cylindrical structures.
Preferably, after the dam is formed in S33, the anchoring ribs are bolted in the hoisting and/or positioning holes of the dam.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the construction method of the flexible steel dam is improved, the dam body is changed from the original 'wall-building' welding method into a mode of welding the dam body layers firstly and then stacking welding, so that the construction speed can be greatly improved as a whole, and as the welding of each dam body layer is carried out on the ground, compared with the original online high-place construction, the floor construction is more convenient and simpler, the welding construction speed of the dam body can be improved, the time used in the construction link is reduced, and the whole construction period of the flexible steel dam is finally shortened.
2. The welding auxiliary tool is designed in the invention, and when the dam body layers are welded and assembled, the construction speed can be greatly improved by utilizing the welding auxiliary tool; when the steel plate unit is cut and fed, numbering is carried out on each steel plate unit, and when the steel plate unit is applied to a welding auxiliary tool, the splicing speed is ensured, and the situation of incorrect splicing is prevented; the auxiliary welding tool adopts a telescopic structure matched with the spring and the steel ball, so that the positioning and fixing of each steel plate unit during welding can be effectively realized, manual support is not needed, and the construction is convenient; and the position of the fixer in the welding auxiliary tool can be adjusted through rotation, and the fixer is matched with a round steel ball, so that the steel plate unit can be conveniently fixed at any position, and the limitation is small.
3. The auxiliary positioning tool is designed in the invention and is used for realizing the fixed positioning of the dam layer positioned on the upper layer and the dam layer positioned on the lower layer so as to avoid the problem of dislocation and influence on welding; the auxiliary positioning tool is provided with two structural forms and two corresponding using methods, wherein one of the two structural forms only plays a role in auxiliary positioning and fixing and can be detached for recycling; secondly, not only play the fixed effect of assistance-localization real-time, still play the effect of drawknot anchor, under this kind of circumstances, need not to dismantle, directly pour in the concrete, whichever structural style can both bring the technical effect that optimizes construction technology, improves construction speed.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a structural cross-sectional view of a flexible steel dam in a top view.
Fig. 2 is a cross-sectional view taken along A-A in fig. 1.
Fig. 3 is a cross-sectional view of another embodiment taken along the A-A direction.
Fig. 4 is a front view of a flexible steel dam.
Fig. 5 is a schematic diagram of a dam structure in a flexible steel dam.
FIG. 6 is a schematic diagram of a connection structure between an upper dam layer and a lower dam layer.
Fig. 7 is a top view of the welding aid.
Fig. 8 is a partial cross-sectional view of the holder in the welding aid.
Fig. 9 is a perspective view of a connection structure of the base plate and the positioning plate.
FIG. 10 is a schematic diagram of an embodiment of an auxiliary positioning tool.
Fig. 11 is a schematic structural view of the auxiliary positioning tool in a use state.
Fig. 12 is a schematic diagram of an embodiment of an auxiliary positioning tool structure.
Fig. 13 is a flow chart of the method of the present invention.
Reference numerals illustrate:
1, river course; 2, a concrete base; 3 channel steel; 31 a barrier layer; 4, dam body; 41 dam layers; 411 lifting holes; 412 a locating hole; 5, a dam abutment; 6, anchoring the rib; 7, lacing wires; 8, a bottom plate; 9, positioning a plate; 10 support seats; 11 swing rods; 12 telescopic rods; 13 steel balls; 14 end caps; 15 sliding blocks; a 16 spring; 17 spring seats; 18 main arm; 19 a threaded rod; 20 armrests; 21 squeeze column I;22 sleeves; 23 squeezing the column II; and 24 locking the nut.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
Example 1
As shown in fig. 1-6, the invention provides a construction method of a flexible steel dam, wherein the flexible steel dam comprises a dam body 4, a concrete base 2, a concrete dam abutment 5 and channel steel 3, wherein the concrete base 2 is constructed along the width direction of a river channel 1; the concrete base 2 is internally provided with a channel steel 3, the channel steel 3 can be straight channel steel 3 or arc channel steel 3, when the straight channel steel 3 is selected, the dam body 4 is of a flat plate structure correspondingly, and when the arc channel steel 3 is selected, the dam body 4 is of an arc structure, so that the concrete base 22 is also constructed into an arc shape; in this embodiment, the arc-shaped dam 4 is constructed as an example. The bottom of the dam body 4 is connected in the notch of the channel steel 3 in a welding and fixing mode; the dam body 4 comprises a plurality of layers of dam body layers 41 which are mutually overlapped from bottom to top, each layer of dam body layer 41 comprises a plurality of mutually welded steel plate units, the dam body layers 41 are connected into a whole in a welding mode, and the steel plate units in the dam body 4 can be welded in a staggered joint mode; the two sides of the dam body 4 are connected with concrete dams 5, the concrete dams 5 are constructed at the river bank, the bottom of each concrete dam 5 is connected with the concrete base 2, and the dam body 4, the concrete base 2 and the concrete dams 5 are connected together to form the flexible steel dam.
In addition, an overflow plate can be welded at the top of the dam body 4; the overflow plate is turned over along the water flow direction, and the water is passed through the top of the dam body 4, so that the landscape effect of the artificial waterfall is formed, and the landscape design requirement is met. Moreover, the overflow plate can prevent the water flow from scouring and corroding the back surface of the dam body 4, and the service life is prolonged.
Structurally, the dam body 4 is made of steel plates, and the characteristics of high strength and good flexibility of the steel plates are fully utilized, so that the dam body 4 has good stretchability; the flexible steel dam has the advantages of simple construction, short construction period, safe and reliable operation and convenient maintenance and management in the future in the construction process; the flexible steel dam is convenient to disassemble and build, the disassembled dam body 4 can be reused, the cost is saved, the dam body 4 can be directly cut off when being disassembled, a large amount of dust can not be generated, and the method is environment-friendly and practical.
In the patent previously filed by the inventor, a construction method is provided for constructing the flexible steel dam, and when the dam body 4 is welded, a piece of steel plate units are stacked and welded on site to form the dam body 4, which is similar to the construction method of building site barrier walls, but the construction speed of the method is not very fast in practical application, and the construction method needs to be improved. For this reason, the inventors have intensively studied and proposed another construction method of a flexible steel dam, mainly aiming at improvements on how to fix the steel plates in the dam body 4 and to increase the welding speed.
Referring to fig. 7-11 and fig. 13, the method for constructing the flexible steel dam according to the present embodiment includes the following steps:
s1: processing and manufacturing, orderly numbering
Cutting, blanking and processing according to design requirements to finish the manufacture of the steel plate unit and the channel steel 3; the steel plate units in each dam layer 41 are respectively numbered in sequence; for example, the dam layers 41 are numbered in the order of 1,2,3,4 and … … from bottom to top; for the steel plate units in each dam layer 41, the steel plate units are 1-1,1-2 and 1-3 … …;2-1,2-2,2-3 … …;3-1,3-2,3-3 … ….
S2: construction of concrete foundation 2
Cleaning a river channel 1, supporting templates in the river channel 1, pouring concrete to form a concrete base 2, and embedding channel steel 3 during pouring; and after the concrete is solidified, removing the template.
Before pouring, the bottom of the channel steel 3 is welded with a plurality of tie bars 7, and the tie bars 7 are poured in the concrete base 2, so that the connection between the channel steel 3 and the concrete base 2 can be ensured to be more stable.
S3: construction of dam 4
S31, respectively welding and assembling the steel plate units in each dam layer 41 in sequence to form a plurality of dam layers 41: because the steel plate units in each dam layer 41 are marked with numbers, the construction speed can be improved by orderly assembling and welding the steel plate units through the numbers during assembly; the steel plate units at two ends of each dam layer 41 are respectively provided with a lifting hole 411 and a positioning hole 412, and the lifting holes 411 are positioned above the positioning holes 412; the lifting hole 411 mainly plays a role in facilitating lifting; the positioning holes 412 mainly serve to facilitate positioning and fixing, and the specific use method is described later.
S32, placing the first dam layer 41 positioned at the bottommost part in a notch of the channel steel 3, and welding and fixing the first dam layer 41 and the channel steel 3;
in the case of constructing the first dam layer 41 at the bottommost portion, manual hand may be used for welding. The dam body 4 is tightly attached to the inner wall positioned behind the notch and welded together; the bottom of the dam body 4 is also welded with the bottom wall of the notch; the dam body 4 and the channel steel 3 adopt the form of double-sided welding seams, so that when the device is beneficial, the inner wall positioned at the rear of the channel steel 3 can play a good role in limiting and blocking, can bear the impact of water flow, and has better impact resistance.
In addition, in this step, as a preferable mode, an impermeable layer 31 can be further constructed in the notch of the channel steel 3, so that impermeable water stop can be better realized. The impermeable layer 31 may be constructed by various impermeable treatments known in the art, such as filling the slot of the channel 3 with concrete mortar and applying a waterproof coating to form the impermeable layer 31, although other methods are also possible and will not be explained here.
S33, lifting the second dam layer 41 through the lifting holes 411, enabling the second dam layer 41 to be stacked above the first dam layer 41, assisting in fixing the second dam layer 41, and then welding the second dam layer 41 with the first dam layer 41; this process is repeated to complete the auxiliary fixing and stacking welding of the remaining dam layers 41, thereby forming the dam 4.
Because the second dam layer 41 is lifted and placed above the first dam layer 41 in a stacking manner, the supporting surface is smaller due to the thickness of the steel plate unit, and when welding is carried out, the second dam layer 41 is preferably temporarily fixed in an auxiliary manner so as to avoid the problem of dislocation in the follow-up process and influence the welding; this problem also exists when the remaining dam layers 41 are stacked, so that temporary auxiliary fixing is required for each of the remaining dam layers 41 except for the first dam layer 41.
S4: construction of concrete dam abutment 5
And respectively supporting templates at two ends of the dam body 4, pouring concrete to form the concrete dam abutment 5, and connecting the concrete dam abutment 5 with the dam body 4 and the concrete base 2 to form the flexible steel dam.
According to the invention, the construction method of the flexible steel dam is improved, the dam body 4 is changed from the original wall-building type welding method into a mode of welding the dam body layers 41 first and then laminating and welding, so that the construction speed can be greatly improved as a whole, and as the welding of each dam body layer 41 is carried out on the ground, compared with the original online high-place construction, the floor construction is more convenient and simpler, the welding construction speed of the dam body 4 can be improved, the time used in the construction link is reduced, and the whole construction period of the flexible steel dam is finally shortened.
The method in each of the above steps is described in further detail below:
the specific method for welding and assembling the steel plate units in each dam layer 41 in sequence in S31 is as follows: in order to improve the assembling and welding speed of each steel plate unit, auxiliary welding is performed by adopting a welding auxiliary tool, and the specific structural form is shown in figures 7-9.
The welding auxiliary tool comprises a bottom plate 8, wherein the bottom plate 8 is of an arc-shaped structure, one side of the bottom plate 8 is connected with a positioning plate 9, the positioning plate 9 is of an arc-shaped structure, and the positioning plate 9 provides a splicing and shaping die for constructing an arc-shaped dam layer 41; the bottom plate 8 is also connected with a support 10; the support 10 is hinged with at least two sets of holders which are rotatable about hinge points.
The fixer comprises a hollow swing rod 11, one end of the swing rod 11 is rotatably connected to the support 10, the other end of the swing rod 11 is slidably connected with a telescopic rod 12, and the swing rod 11 and the telescopic rod 12 form a telescopic structure; the bottom end of the telescopic rod 12 is inserted into the swing rod 11, a sliding block 15 is connected in a sliding way in the swing rod 11, the sliding block 15 can slide along the inner wall of the swing rod 11, and the bottom end of the telescopic rod 12 is connected with the sliding block 15; the inner wall of the swing rod 11 is also fixedly connected with a spring seat 17, and a spring 16 is connected between the spring seat 17 and the sliding block 15; the top end of the telescopic rod 12 is connected with a steel ball 13. The end of the swing rod 11 is connected with an end cover 14, the telescopic rod 12 freely penetrates through the end cover 14, and the telescopic rod 12 can freely slide relative to the end cover 14. In use, the spring 16 acts as a jacking and two sets of fasteners are used to secure the jacking of the steel plate unit for subsequent welding.
The specific operation method of the welding auxiliary tool comprises the following steps:
(1) according to the number, a first steel plate unit positioned at the head end in the first dam body layer 41 is placed on the bottom plate, the steel plate unit is clung to the surface of the positioning plate 9, and the first group of retainers is rotated, so that the steel balls 13 in the first group of retainers are propped against the surface of the steel plate unit; a space for clamping the steel plate unit is formed between the steel ball 13 and the positioning plate 9 so that the steel plate unit can stand above the bottom plate 8.
(2) After the first steel plate unit is fixed, sequentially placing the second steel plate units according to the number, enabling the second steel plate units to cling to the surface of the positioning plate 9, and ensuring that the second steel plate units are adjacent to the first steel plate units; then the second group of the retainers is rotated, so that the steel balls 13 in the second group of retainers are propped against the surface of the steel plate unit, and the second steel plate unit is fixed; then, welding the second steel plate unit and the first steel plate unit together; according to the principle, a third steel plate unit is orderly placed according to the number, the position of a second group of retainers is adjusted in a rotating mode, so that steel balls 13 in the second group of retainers are propped against the surface of the third steel plate unit, and then the third steel plate unit and the second steel plate unit are welded together; repeating the process, and welding to obtain a first dam layer 41;
in this step, the steel plate units in the first dam layer 41 may be welded and fixed by local spot welding;
(3) removing the first dam layer 41 from the auxiliary welding tool, and fully welding all welding seams on both sides to obtain a finished product of the first dam layer 41;
(4) and repeating the above processes to obtain the second-layer dam layer 41 finished product and the third-layer dam layer 41 finished product … … Nth-layer dam layer 41 finished product until all the dam layer 41 finished products are obtained by welding.
According to the invention, by designing the welding auxiliary tool, when the dam body layers 41 are welded and assembled, the construction speed can be greatly improved by utilizing the welding auxiliary tool; when the steel plate unit is cut and fed, numbering is carried out on each steel plate unit, and when the steel plate unit is applied to a welding auxiliary tool, the splicing speed is ensured, and the situation of incorrect splicing is prevented; the telescopic structure is adopted in the auxiliary welding tool to be matched with the spring 16 and the steel ball 13, so that the positioning and fixing of each steel plate unit during welding can be effectively realized, manual support is not needed, and the construction is convenient; and the position of the fixer in the welding auxiliary tool can be adjusted through rotation, and the fixer is matched with the round steel ball 13, so that the steel plate unit can be conveniently fixed at any position, and the limitation is small.
The specific method for auxiliary fixation of the dam layer 41 in S33 is as follows: adopting an auxiliary positioning tool to carry out auxiliary fixation, wherein the specific structure is shown in fig. 10-11, the auxiliary positioning tool comprises a main arm 18, two ends of the main arm 18 are respectively connected with a threaded rod 19 capable of penetrating through a hoisting hole 411 and a positioning hole 412, and the main arm 18 and the threaded rod 19 form a U-shaped structure; the outer wall of the main arm 18 is connected with an extrusion column I21; the threaded rod 19 is respectively sleeved with a sleeve 22 in sliding connection, the sleeve 22 can be detached from the threaded rod 19, and the sleeve 22 can freely move along the threaded rod 19; an extrusion column II23 is connected between the sleeves 22; a clamping and positioning space is formed between the extrusion column II23 and the extrusion column I21 and is used for positioning and fixing the upper dam layer 41; the threaded rod 19 is in threaded connection with a locking nut 24, and the extrusion column II23 and the extrusion column I21 can be mutually close by screwing the locking nut 24, so that the extrusion column II23 is positioned on one side of the dam layer 41, and the extrusion column I21 is positioned on the other side of the dam layer 41.
For ease of handling, an armrest 20 is attached to the outer wall of the main arm 18.
The extrusion column I21 and the extrusion column II23 are both in cylindrical or semi-cylindrical structures, and the dam body 4 is in an arc-shaped structure, so that the cylindrical or semi-cylindrical structure is more beneficial to being attached to the inner side and the outer side of the dam body layer 41, and the upper and lower dam body layers 41 are aligned and fixed conveniently.
The specific operation method of the auxiliary positioning tool is as follows:
(1) after the dam layer 41 positioned on the upper layer is hoisted above the dam layer 41 positioned on the lower layer, the main arm 18 is held by hand, and one of the threaded rods 19 penetrates through the positioning hole 412 of the dam layer 41 positioned on the upper layer; penetrating the other threaded rod 19 through the lifting hole 411 of the dam layer 41 positioned at the lower layer;
(2) sleeve 22 at two ends of the extrusion column II23 is sleeved on the threaded rod 19;
(3) the locking nuts 24 are installed and screwed, so that the extrusion columns II23 and I21 clamp the upper and lower dam layers 41, and auxiliary fixing between the upper and lower dam layers 41 and 41 is completed.
(4) After the auxiliary fixation between the upper dam layer 41 and the lower dam layer 41 is completed, the lifting device is released, and the upper dam layer 41 and the lower dam layer 41 are welded and fixed; after the welding and fixing are finished, the auxiliary positioning tool is disassembled for the next use.
(5) The above process is repeated to complete the upward lamination welding of the remaining dam layers 41.
When all the dam layers 41 are stacked and welded to form the dam 4 described in S33, the anchor bars 6 may be bolted or welded in the lifting holes 411 and/or the positioning holes 412 of the dam 4, so as to improve the tensile strength.
Example two
Referring to fig. 12, this embodiment proposes a method for constructing a flexible steel dam, and other structures and methods are the same as those of the implementation, except that a plurality of anchor bars 6 are welded on the outer wall of the extrusion column II23, and the length of the threaded rod 19 is longer to form a bar-planting structure.
In the specific operation method (4) of the auxiliary positioning tool in the first embodiment, after the welding and fixing are completed, the auxiliary positioning tool is disassembled for the next use; in the embodiment, the auxiliary positioning tool can be directly used for improving the bonding and anchoring effect with the concrete by utilizing the threaded rod 19 and a plurality of anchoring ribs 6 on the outer wall of the extrusion column II23 without being disassembled; therefore, although a plurality of auxiliary positioning tools are integrally configured, additional installation of the anchor ribs 6 is not needed to be carried out later, the step of disassembling the auxiliary positioning tools is omitted, links are saved, and the construction speed can be greatly improved.
It can be seen that the auxiliary positioning tool is designed in the invention, and the auxiliary positioning tool is used for realizing the fixed positioning of the dam layer 41 positioned at the upper layer and the dam layer 41 positioned at the lower layer so as to avoid the subsequent dislocation problem and influence welding; the auxiliary positioning tool is provided with two structural forms and two corresponding using methods, wherein one of the two structural forms only plays a role in auxiliary positioning and fixing and can be detached for recycling; secondly, not only play the fixed effect of assistance-localization real-time, still play the effect of drawknot anchor, under this kind of circumstances, need not to dismantle, directly pour in the concrete, whichever structural style can both bring the technical effect that optimizes construction technology, improves construction speed.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (6)
1. The flexible steel dam comprises a dam body, a concrete base, a concrete dam abutment and channel steel, and is characterized in that the concrete base is internally provided with the channel steel, and the bottom of the dam body is connected in a notch of the channel steel; the dam body comprises a plurality of layers of dam body layers which are mutually overlapped from bottom to top, and each layer of dam body layer comprises a plurality of steel plate units which are mutually welded; the method for constructing the flexible steel dam is characterized by comprising the following steps of:
s1: processing and manufacturing, orderly numbering
Cutting, blanking and processing according to design requirements to finish the manufacture of the steel plate unit and the channel steel; respectively numbering the steel plate units in each dam body layer in sequence;
s2: construction of concrete foundation
Cleaning a river channel, supporting templates in the river channel, pouring concrete to form a concrete base, and embedding channel steel during pouring;
s3: constructing a dam
S31, respectively welding and assembling the steel plate units in each dam layer in sequence to form a plurality of dam layers: respectively arranging lifting holes and positioning holes on the steel plate units positioned at two ends of each dam body layer, wherein the lifting holes are positioned above the positioning holes;
the specific method for welding and assembling the steel plate units in each dam layer in sequence in S31 is as follows: adopting a welding auxiliary tool to carry out auxiliary welding, wherein the welding auxiliary tool comprises a bottom plate, one side of the bottom plate is connected with a positioning plate, the bottom plate is also connected with a support, at least two groups of holders are hinged on the support, each holder comprises a hollow swing rod, the swing rods are connected with telescopic rods in a sliding manner, the bottom ends of the telescopic rods are inserted into the swing rods, a sliding block is connected in the swing rods in a sliding manner, and the bottom ends of the telescopic rods are connected with the sliding block; the inner wall of the swing rod is also fixedly connected with a spring seat, and a spring is connected between the spring seat and the sliding block; the top end of the telescopic rod is connected with a steel ball;
the specific operation method of the welding auxiliary tool comprises the following steps:
(1) according to the number, a first steel plate unit positioned at the head end in a first dam body layer is placed on a base, the steel plate unit is clung to the surface of a positioning plate, and a first group of retainers are rotated, so that steel balls in the first group of retainers are propped against the surface of the steel plate unit;
(2) sequentially placing the second steel plate units according to the numbers, enabling the second steel plate units to cling to the surface of the positioning plate, and ensuring that the second steel plate units are adjacent to the first steel plate units; then rotating the second group of fixtures to enable the steel balls in the second group of fixtures to prop against the surface of the steel plate unit, and fixing the second steel plate unit; then, welding the second steel plate unit and the first steel plate unit together; according to the principle, a third steel plate unit is orderly placed according to the number, the position of a second group of retainers is adjusted in a rotating mode, so that steel balls in the second group of retainers are propped against the surface of the third steel plate unit, and then the third steel plate unit and the second steel plate unit are welded together; repeating the process, and welding to obtain a first dam body layer;
(3) taking the first dam body layer off from the welding auxiliary tool, and fully welding all welding seams on both sides to obtain a first dam body layer finished product;
(4) repeating the above processes to obtain a second-layer dam layer finished product and a third-layer dam layer finished product … … Nth-layer dam layer finished product until all the dam layer finished products are obtained by welding;
s32, placing a first dam layer positioned at the bottommost part in a notch of the channel steel, and welding and fixing the first dam layer and the channel steel;
s33, hoisting Kong Diaoyun the second dam layer to enable the second dam layer to be stacked above the first dam layer, fixing the second dam layer in an auxiliary mode, and then welding the second dam layer with the first dam layer; repeating the process to finish auxiliary fixation and stacking welding of the rest dam body layers to form the dam body;
s4: construction of concrete dam abutment
And respectively supporting templates at two ends of the dam body, pouring concrete to form the concrete dam abutment, and connecting the concrete dam abutment with the dam body and the concrete base to form the flexible steel dam.
2. The method for constructing the flexible steel dam according to claim 1, wherein the specific method for auxiliary fixing of the dam body layer in S33 is as follows: adopting an auxiliary positioning tool to carry out auxiliary fixation, wherein the auxiliary positioning tool comprises a main arm, two ends of the main arm are respectively connected with a threaded rod capable of penetrating through a hoisting hole and a positioning hole, and the main arm and the threaded rod form a U-shaped structure; the outer wall of the main arm is connected with an extrusion column I; the threaded rods are respectively sleeved with a sleeve in sliding connection, and an extrusion column II is connected between the sleeves; a clamping and positioning space is formed between the extrusion column II and the extrusion column I; the threaded rod is connected with a locking nut in a threaded manner;
the specific operation method of the auxiliary positioning tool is as follows:
(1) after the dam layer positioned on the upper layer is hoisted above the dam layer positioned on the lower layer, the main arm is held by hand, and one of the threaded rods penetrates through the positioning hole of the dam layer positioned on the upper layer; penetrating another threaded rod through a lifting hole of a dam body layer positioned at the lower layer;
(2) sleeving sleeves at two ends of the extrusion column II on the threaded rod;
(3) and installing and screwing the locking nut, so that the extrusion column II and the extrusion column I clamp the upper dam layer and the lower dam layer, and auxiliary fixation between the upper dam layer and the lower dam layer is completed.
3. The method for constructing a flexible steel dam according to claim 2, wherein a plurality of anchor bars are welded on the outer wall of the extrusion column II.
4. A method of constructing a flexible steel dam according to claim 3, wherein the outer wall of the main arm is connected with a handrail.
5. A method of constructing a flexible steel dam according to claim 3, wherein the squeeze columns I and II are each of cylindrical or semi-cylindrical configuration.
6. The method of constructing a flexible steel dam as claimed in claim 1, wherein after the dam is formed in S33, the anchor bars are bolted to the lifting and/or positioning holes of the dam.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101619029B1 (en) * | 2015-11-25 | 2016-05-11 | 한국수자원공사 | RCC dam for formation of atypical curved surface and construction method of the same |
| CN206952450U (en) * | 2017-07-14 | 2018-02-02 | 北京善筑科技股份有限公司 | Weld positioning tool |
| CN113481945A (en) * | 2021-07-29 | 2021-10-08 | 山东省水利科学研究院 | Flexible steel dam construction method |
| CN216238370U (en) * | 2021-11-15 | 2022-04-08 | 安徽金川活动坝科技有限公司 | Movable dam with protection hydraulic supporting structure |
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2022
- 2022-08-15 CN CN202210975807.1A patent/CN115162282B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101619029B1 (en) * | 2015-11-25 | 2016-05-11 | 한국수자원공사 | RCC dam for formation of atypical curved surface and construction method of the same |
| CN206952450U (en) * | 2017-07-14 | 2018-02-02 | 北京善筑科技股份有限公司 | Weld positioning tool |
| CN113481945A (en) * | 2021-07-29 | 2021-10-08 | 山东省水利科学研究院 | Flexible steel dam construction method |
| CN216238370U (en) * | 2021-11-15 | 2022-04-08 | 安徽金川活动坝科技有限公司 | Movable dam with protection hydraulic supporting structure |
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