Slip form for construction of ultra-large-diameter LNG storage tank cylinder wall

Abstract

The invention relates to the technical field of LNG storage tank barrel wall construction, in particular to a sliding formwork for super-large-diameter LNG storage tank barrel wall construction, a door-shaped frame comprises a door-shaped frame transverse main beam and two door-shaped frame lower vertical rods, the two door-shaped frame lower vertical rods are symmetrically and fixedly connected to the left side and the right side of the lower end of the door-shaped frame transverse main beam, and the door-shaped frame transverse main beam is fixedly connected to the left side and the right side of the lower end of the door-shaped frame lower vertical rods; an upper outrigger and a lower outrigger are fixedly connected to the upper portion and the middle of a vertical rod on the lower portion of the n-shaped frame respectively, enclosures are fixedly connected to the tops of the inner side ends of the upper outrigger and the lower outrigger respectively, and the inner side ends of the two enclosures on the left side and the right side on the same side are fixedly connected with the upper side and the lower side of the outer wall of a formwork respectively. And two jacks are symmetrically and fixedly connected to the left side and the right side of the top end of the transverse main beam of the n-shaped frame, the two jacks are fixedly arranged on the two supporting rods in a sleeving mode correspondingly, the jacks can climb along the supporting rods, and the bottom ends of the supporting rods are fixedly connected to the ground.

Description

Technical Field

[0001] The invention relates to the technical field of LNG storage tank barrel wall construction, in particular to a slipform for super-large diameter LNG storage tank barrel wall construction. Background Art

[0002] With the rapid development of the liquefied natural gas (LNG) industry, the demand for LNG tank construction is growing, and the requirements for its safety, economy and construction efficiency are getting higher and higher. At present, the traditional cantilever formwork system is generally used in the wall construction of LNG tanks. It is a relatively mature and widely used construction process, but there is still room for improvement in safety management, construction efficiency, cost control, environmental protection performance and other aspects.

[0003] Slipform engineering technology is a construction technology in my country's cast-in-place concrete structure construction that features a high degree of mechanization, fast construction speed, small site occupation, strong structural integrity, good seismic performance, guaranteed safe operation, and significant comprehensive environmental and economic benefits. It is usually referred to as "slipform".

[0004] Slipform technology is widely used in many industrial fields and other fields. Slipform construction adopts the method of slowly moving the formwork structure to form the structure. The hydraulic jack is used as the sliding power to drive the formwork or sliding frame to slide along the newly formed concrete surface. The concrete is poured in layers from the top of the formwork, and the thickness of each layer is generally not more than 300mm. When the concrete in the bottom layer of the formwork reaches a certain strength, the formwork sleeve or sliding frame continues to slide upward with the help of the lifting machine, and the operation is repeated until the designed height is reached.

[0005] Many cement clinker storage and grain chemical storage tank projects in China are similar in appearance to LNG storage tanks, and are constructed using slipforms, sliding frame inverted molds, etc., which can meet construction needs. However, compared with LNG storage tanks, these projects have the following problems: first, the tank diameter is small, second, the construction process is simpler, and third, there is less cross-construction with installation. Compared with completed projects in China that use slipform construction, LNG storage tanks have larger tank diameters, a greatly increased amount of steel bars using double-layer steel mesh, a large number of embedded parts and horizontal and vertical prestressed embedded pipes distributed on the internal and external walls, and the influence and requirements of the arch construction that crosses with the installation profession increase the difficulty of slipform construction. Summary of the invention

[0006] The purpose of the present invention is to provide a slip form for the construction of a cylinder wall of an ultra-large diameter LNG storage tank, so as to solve the technical problems existing in the above-mentioned background technology.

[0007] To achieve the above object, the technical solution of the present invention is as follows:

[0008] A slipform for constructing a cylinder wall of an ultra-large diameter LNG storage tank comprises: a portal frame, wherein two portal frames are symmetrically arranged front and back, the portal frame comprises: a portal frame transverse main beam and a portal frame lower upright pole, the portal frame lower upright poles are arranged with two, the two portal frame lower upright poles are symmetrically fixedly connected to the left and right sides of the lower end of the portal frame transverse main beam, the upper and middle parts of the portal frame lower upright poles are respectively fixedly connected with an upper cantilever beam and a lower cantilever beam, the tops of the inner ends of the upper and lower cantilever beams are both fixedly connected with a circle, the inner ends of the two circles on the same sides are respectively fixedly connected with the upper and lower sides of the outer wall of the template, the portal frame lower upright pole is also fixedly connected with a radiation beam on the upper part of the upper cantilever beam, and two jacks are symmetrically fixedly connected to the left and right sides of the top end of the portal frame transverse main beam, the two jacks are respectively sleeved and fixed on two support rods, the jacks can climb along the support rods, and the bottom ends of the support rods are fixedly connected to the underground.

[0009] Furthermore, the transverse main beam of the portal frame includes: two channel steels 1, and the lower vertical poles of the portal frame include: two channel steels 2, steel plates and steel cover plates. The two channel steels 2 are symmetrically arranged on the left and right, and a number of steel plates are evenly fixedly connected on the front and rear end surfaces of the two channel steels 2, and two steel cover plates are symmetrically fixedly connected on the top of the front and rear end surfaces of the two channel steels 2; the two channel steels 1 are symmetrically fixedly connected on the front and rear sides of the two steel cover plates.

[0010] Furthermore, the upper cantilever beam includes: two channel steels three, the lower cantilever beam includes: two channel steels four, and the radial beam includes: two channel steels five. The two channel steels five, two channel steels three and two channel steels four are fixedly connected to the steel plates at corresponding positions symmetrically from top to bottom.

[0011] Furthermore, the channel steel 1 is 16# channel steel, the channel steel 2, channel steel 3, channel steel 4 and channel steel 5 are all 10# channel steel, the steel plate and steel cover plate are all 6mm thick steel plates, the enclosure is HW I-beam, the distance between the upper and lower enclosures on the same side is 750mm, the upper enclosure is 200mm away from the upper edge of the template, the lower enclosure is 250mm away from the lower edge of the template, the template is a 1.2m standard steel template, and the template and the enclosure are connected with hook bolts.

[0012] Furthermore, it also includes: diagonal braces, wherein a plurality of layer connecting beams 1 are evenly arranged along the length direction of the bottom end of the radiation beam, and two layer connecting beams 2 are symmetrically arranged on the left and right sides of the bottom end of the lower cantilever beam, and the radiation beam and the lower cantilever beam on the same side are connected and fixed by diagonal braces.

[0013] Furthermore, it also includes: a guardrail is vertically fixedly connected to the outer side of the top of the radiation beam, a steel plate mesh is fixedly connected to the inner wall of the guardrail, a platform steel springboard is fixedly installed on the top of the two radiation beams on the same side, and a skirting board is provided at the connection between the steel plate mesh and the platform steel springboard.

[0014] Furthermore, a lower hanging frame upright is fixedly connected to the outer side of the bottom end of the lower cantilever beam, a lower hanging frame cross bar is fixedly connected to the bottom end of the lower hanging frame upright, a plurality of lower hanging platform cross beams are evenly fixedly connected to the top ends of the two lower hanging frame cross bars on the same side, a platform steel springboard two is fixedly installed on the top end of the lower hanging platform cross beam, a steel plate mesh two is fixedly connected to the inner end of the lower hanging frame upright, and a skirting board two is provided in connection with the steel plate mesh two and the platform steel springboard two.

[0015] Furthermore, the support rod is a φ48*3.5mm steel pipe, the jack model is GYD-60, and the support rod is detachably fixed with a limit card above the jack.

[0016] Furthermore, it also includes: a center pull ring and a pull rod, the center pull ring includes: an upper ring and a lower ring, the upper ring is arranged directly above the lower ring and located at the center of the LNG tank cylinder wall, and there are several pull rods. The upper ring and the lower ring are respectively connected to several lower vertical poles of the door frame on the sliding formwork through several pull rods.

[0017] Furthermore, two guide wheels are arranged from top to bottom at the lower part of the lower upright pole of the right side portal frame, and the two guide wheels are respectively connected in a rolling manner to the outer wall of the LNG storage tank cylinder wall.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] By setting up a sliding formwork that can slide upward, the fixed dead formwork is changed into a sliding movable steel formwork, so there is no need to prepare a large amount of fixed formwork erection technology. Only wire drawing, laser, sonar, ultrasound, etc. are used as the reference system for the elevation, position and direction of the structure. The strip structure or component can be completed in one continuous construction, which greatly improves the construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the present invention when the guardrail, the lower hanging platform and the guide wheel are not installed;

[0022] Figure 3 It is a structural view of the connection between the transverse main beam of the door frame and the lower upright pole of the door frame in the present invention;

[0023] Figure 4 It is a structural view of the lower upright pole of the door frame in the present invention;

[0024] Figure 5 It is a structural view of the connection between the upper cantilever beam and the lower upright pole of the door frame in the present invention;

[0025] Figure 6It is a structural view of the connection between the lower cantilever beam and the lower upright pole of the door frame in the present invention;

[0026] Figure 7 It is a structural view of the connection between the radiant beam and the lower upright pole of the door frame in the present invention;

[0027] Figure 8 It is a transverse longitudinal sectional view in the present invention;

[0028] Fig. 9 It is a partial structural view at the position of the limit card in the present invention;

[0029] Fig.10 is a top view of the connection between the upper ring and the sliding mold in the present invention;

[0030] Fig.11 is a top view of the connection between the lower ring and the sliding mold in the present invention;

[0031] Fig.12 It is a structural schematic diagram of the center pull ring in the present invention.

[0032] The numbers in the attached drawings are: 1-transverse main beam of the portal frame, 101-channel steel one, 2-vertical pole of the lower part of the portal frame, 201-channel steel two, 202-steel plate, 203-steel cover plate, 3-upper cantilever beam, 301-channel steel three, 4-lower cantilever beam, 401-channel steel four, 5-circle, 6-formwork, 7-radial beam, 701-channel steel five, 8-layer connecting beam one, 9-diagonal brace, 10-connecting beam two, 11-thousand Jack, 12-support rod, 13-guardrail, 14-lower bracket vertical rod, 15-lower bracket cross bar, 16-lower platform cross beam, 17-steel mesh one, 18-platform steel springboard one, 19-skirting board one, 20-platform steel springboard two, 21-steel mesh two, 22-skirting board two, 23-limiting card, 24-center pull ring, 2401-upper ring, 2402-lower ring, 25-pull rod. DETAILED DESCRIPTION

[0033] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0034] See also Figures 1 to 12As shown, a slipform for the construction of a cylinder wall of an ultra-large diameter LNG storage tank comprises: a gantry, two gantrys are symmetrically arranged front and back, the gantry comprises: a gantry transverse main beam 1 and a gantry lower upright 2, two gantry lower uprights 2 are arranged, the two gantry lower uprights 2 are symmetrically fixedly connected to the left and right sides of the lower end of the gantry transverse main beam 1, the upper and middle parts of the gantry lower upright 2 are respectively fixedly connected with an upper cantilever beam 3 and a lower cantilever beam 4, the tops of the inner ends of the upper and lower cantilever beams 3 and 4 are both fixedly connected with a circle 5, the inner ends of the two circles 5 on the same sides are respectively fixedly connected with the upper and lower sides of the outer wall of a template 6, the lower upright 2 of the gantry is also fixedly connected with a radiation beam 7 on the upper part of the upper cantilever beam 3, two jacks 11 are symmetrically fixedly connected to the left and right sides of the top of the gantry transverse main beam 1, the two jacks 11 are respectively sleeved and fixed on two support rods 12, the jacks 11 can climb along the support rods 12, and the bottom ends of the support rods 12 are fixedly connected to the underground.

[0035] In this embodiment, the transverse main beam 1 of the portal frame includes: two channel steels 101, and the lower vertical rod 2 of the portal frame includes: two channel steels 201, a steel plate 202 and a steel cover plate 203. The two channel steels 201 are symmetrically arranged on the left and right, and a plurality of steel plates 202 are evenly fixedly connected on the front and rear end surfaces of the two channel steels 201, and two steel cover plates 203 are symmetrically fixedly connected on the top of the front and rear end surfaces of the two channel steels 201; the two channel steels 101 are symmetrically fixedly connected to the front and rear sides of the two steel cover plates 203.

[0036] In this embodiment, the upper cantilever beam 3 includes: two channel steels 3 301, the lower cantilever beam 4 includes: two channel steels 401, and the radial beam 7 includes: two channel steels 5 701. The two channel steels 5 701, the two channel steels 3 301 and the two channel steels 4 401 are fixedly connected to the steel plates 202 at corresponding positions symmetrically from top to bottom; the channel steel 101 is 16# channel steel, the channel steel 201, the channel steel 3 301, the channel steel 4 401 and the channel steel 5 701 are all 10# channel steels, the steel plate 202 and the steel cover plate 203 are both 6mm thick steel plates, the enclosure 5 is HW I-beam, the spacing between the upper and lower enclosures 5 on the same side is 750mm, and the upper enclosure 5 is 200mm away from the upper opening of the template 6. The lower enclosure 5 is 250mm away from the lower opening of the template 6, and the template 6 is a 1.2m standard steel template. The template 6 and the enclosure 5 are connected by hook bolts.

[0037] In this embodiment, the slip formwork for the construction of the cylinder wall of the extra-large diameter LNG storage tank also includes: diagonal braces 9, a plurality of layer connecting beams 8 are evenly arranged along the length direction of the bottom end of the radiation beam 7, two layer connecting beams 10 are symmetrically arranged on the left and right sides of the bottom end of the lower cantilever beam 4, and the radiation beam 7 and the lower cantilever beam 4 on the same side are connected and fixed by the diagonal braces 9, and the diagonal braces 9 can improve the supporting stability of the radiation beam 7.

[0038] In this embodiment, the slipform for the construction of the cylinder wall of the extra-large diameter LNG storage tank also includes: a guardrail 13 is vertically fixedly connected to the outer side of the top of the radiation beam 7, a steel plate mesh 17 is fixedly connected to the inner wall of the guardrail 13, and a platform steel springboard 18 is fixedly installed on the top of the two radiation beams 7 on the same side. A skirting board 19 is provided at the connection between the steel plate mesh 17 and the platform steel springboard 18. The platform steel springboard 18 is provided for the convenience of construction workers to carry out construction work thereon, and the steel plate mesh 17 is provided to protect the construction and ensure the safety of the construction workers.

[0039] In this embodiment, a lower hanging frame upright 14 is fixedly connected to the outer side of the bottom end of the lower cantilever beam 4, a lower hanging frame cross bar 15 is fixedly connected to the bottom end of the lower hanging frame upright 14, a plurality of lower hanging platform cross beams 16 are evenly fixedly connected to the top of the two lower hanging platform cross bars 15 on the same side, a platform steel springboard 20 is fixedly installed on the top of the lower hanging platform cross beam 16, a steel plate mesh 21 is fixedly connected to the inner side end of the lower hanging frame upright 14, a skirting board 22 is provided in connection with the steel plate mesh 21 and the platform steel springboard 20, the platform steel springboard 20 is convenient for the subsequent painting and cleaning operations of the construction personnel, and the steel plate mesh 21 plays a protective role in the construction.

[0040] In this embodiment, the support rod 12 is a φ48*3.5mm steel pipe, the jack 11 model is GYD-60, and the support rod 12 is detachably fixed with a limit card 23 above the jack 11. The jack 11 and the support rod 12 cooperate to drive the entire sliding formwork to climb upward, thereby facilitating the step-by-step pouring construction of the LNG storage tank wall.

[0041] In this embodiment, the slipform for construction of the cylinder wall of an extra-large diameter LNG storage tank also includes: a center pull ring 24 and a tie rod 25. The center pull ring 24 includes: an upper ring 2401 and a lower ring 2402. The upper ring 2401 is arranged directly above the lower ring 2402 and located at the center of the cylinder wall of the LNG storage tank. A plurality of tie rods 25 are provided. The upper ring 2401 and the lower ring 2402 are respectively connected to a plurality of lower vertical poles 2 of the gate frame on the slipform through a plurality of tie rods 25. The provided center pull ring 24 is used in conjunction with the tie rod 25 to connect a plurality of slipforms on the cylinder wall of the LNG storage tank, thereby further improving the overall stability.

[0042] In this embodiment, two guide wheels are arranged from top to bottom at the lower part of the lower upright pole 2 of the right side portal frame. The two guide wheels are respectively connected in a rolling manner to the outer wall of the LNG storage tank cylinder wall. The arranged guide wheels facilitate the guiding of the sliding of the entire sliding formwork.

[0043] Construction process: according to the construction position and shape of the cylinder wall of the super-large diameter LNG storage tank, several groups of support rods 12 are pre-buried underground, and each group is radially arranged with two. The slipform for the construction of the cylinder wall of the super-large diameter LNG storage tank is lifted and the four jacks 11 on it are mounted on two adjacent groups of four support rods 12, and the above steps are repeated several times to connect several slipforms for the construction of the cylinder wall of the super-large diameter LNG storage tank into a ring-shaped whole. Then, the upper ring 2401 and the lower vertical poles 2 of the gate frame on several slipforms are connected by several tie rods 25 at the center of the cylinder wall of the LNG storage tank, and the lower ring 2402 and the lower vertical poles 2 of the gate frame on several slipforms are connected by several tie rods 25. A steel cage is buried between the templates 6 on the inner and outer sides, and then concrete pouring construction is carried out. After the concrete between the templates 6 on the inner and outer sides is solidified, several slipforms are lifted synchronously by several jacks 11, and then the above steps are repeated. The template is lifted 300mm each time.

[0044] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inside", "outside", "top / bottom" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0045] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any technician familiar with the profession, without departing from the scope of the technical solution of the present invention, according to the technical essence of the present invention, any simple modification, equivalent replacement and improvement made to the above embodiment still falls within the protection scope of the technical solution of the present invention.

Claims

1. A slipform for the construction of a super-large diameter LNG storage tank wall, characterized in that: include: A door frame, wherein two door frames are symmetrically arranged in front and back, and the door frame comprises: a door frame transverse main beam (1) and a door frame lower upright pole (2), wherein two door frame lower upright poles (2) are arranged, and the two door frame lower upright poles (2) are symmetrically fixedly connected to the left and right sides of the lower end of the door frame transverse main beam (1), and the upper and middle parts of the door frame lower upright pole (2) are respectively fixedly connected to an upper cantilever beam (3) and a lower cantilever beam (4), and the inner side ends of the upper cantilever beam (3) and the lower cantilever beam (4) are both fixedly connected to a ring (5), The inner ends of the two enclosures (5) on the same side are respectively fixedly connected to the upper and lower sides of the outer wall of the template (6); the lower upright pole (2) of the door frame is also fixedly connected to a radiation beam (7) on the upper part of the upper cantilever beam (3); two jacks (11) are symmetrically fixedly connected to the left and right sides of the top of the transverse main beam (1) of the door frame; the two jacks (11) are respectively sleeved and fixed on two support rods (12); the jacks (11) can climb along the support rods (12); the bottom ends of the support rods (12) are fixedly connected to the ground.

2. The slip form for the construction of the cylinder wall of an ultra-large diameter LNG storage tank according to claim 1 is characterized in that: The portal frame transverse main beam (1) comprises: two channel steels (101); the portal frame lower upright pole (2) comprises: two channel steels (201), steel plates (202) and steel cover plates (203); the two channel steels (201) are symmetrically arranged on the left and right sides; a plurality of steel plates (202) are evenly fixedly connected on the front and rear end surfaces of the two channel steels (201); two steel cover plates (203) are symmetrically fixedly connected on the top of the front and rear end surfaces of the two channel steels (201); and the two channel steels (101) are symmetrically fixedly connected on the front and rear sides of the two steel cover plates (203).

3. The slipform for construction of a cylinder wall of an ultra-large diameter LNG storage tank according to claim 2 is characterized in that: The upper cantilever beam (3) comprises two channel steels three (301), the lower cantilever beam (4) comprises two channel steels four (401), and the radial beam (7) comprises two channel steels five (701). The two channel steels five (701), the two channel steels three (301) and the two channel steels four (401) are fixedly connected to the steel plates (202) at corresponding positions symmetrically from top to bottom.

4. The slip form for the construction of the cylinder wall of an ultra-large diameter LNG storage tank according to claim 3 is characterized by: The channel steel 1 (101) is a 16# channel steel, the channel steel 2 (201), the channel steel 3 (301), the channel steel 4 (401) and the channel steel 5 (701) are all 10# channel steels, the steel plate (202) and the steel cover plate (203) are all 6mm thick steel plates, the enclosure (5) is an HW I-beam, the spacing between the upper and lower enclosures (5) on the same side is 750mm, the upper enclosure (5) is 200mm away from the upper end of the template (6), the lower enclosure (5) is 250mm away from the lower end of the template (6), the template (6) is a 1.2m standard steel template, and the template (6) and the enclosure (5) are connected by hook bolts.

5. The slip form for construction of a cylinder wall of an ultra-large diameter LNG storage tank according to claim 1 is characterized in that: Also includes: A diagonal brace (9) is provided at the bottom end of the radiation beam (7) along its length direction, and a plurality of layer connecting beams (8) are evenly arranged. Two layer connecting beams (10) are symmetrically arranged on the left and right sides of the bottom end of the lower cantilever beam (4). The radiation beam (7) and the lower cantilever beam (4) on the same side are connected and fixed by the diagonal brace (9).

6. The slip form for the construction of the cylinder wall of an ultra-large diameter LNG storage tank according to claim 5 is characterized by: Also includes: A guardrail (13) is vertically fixedly connected to the outer side of the top of the radiation beam (7), a steel plate mesh (17) is fixedly connected to the inner wall of the guardrail (13), a platform steel springboard (18) is fixedly installed on the top of the two radiation beams (7) on the same side, and a skirting board (19) is provided at the connection between the steel plate mesh (17) and the platform steel springboard (18).

7. The slip form for construction of a cylinder wall of an ultra-large diameter LNG storage tank according to claim 1, characterized in that: The lower end of the lower cantilever beam (4) is fixedly connected to a lower hanging frame upright pole (14), the lower end of the lower hanging frame upright pole (14) is fixedly connected to a lower hanging frame cross bar (15), the top ends of the two lower hanging frame cross bars (15) on the same side are evenly fixedly connected to a plurality of lower hanging platform cross beams (16), the top ends of the lower hanging platform cross beams (16) are fixedly installed with a second platform steel springboard (20), the inner side end of the lower hanging frame upright pole (14) is fixedly connected to a second steel plate mesh (21), and the second steel plate mesh (21) is connected to the second platform steel springboard (20) and is provided with a second skirting board (22).

8. The slip form for construction of a cylinder wall of an ultra-large diameter LNG storage tank according to claim 1, characterized in that: The support rod (12) is a φ48*3.5mm steel pipe, the jack (11) is of model GYD-60, and a limit card (23) is detachably fixedly installed above the jack (11).

9. The slip form for construction of a cylinder wall of an ultra-large diameter LNG storage tank according to claim 1, characterized in that: Also includes: A center pull ring (24) and a pull rod (25), wherein the center pull ring (24) comprises an upper ring (2401) and a lower ring (2402), wherein the upper ring (2401) is arranged directly above the lower ring (2402) and located at the center of the cylinder wall of the LNG storage tank, and a plurality of pull rods (25) are arranged, and the upper ring (2401) and the lower ring (2402) are respectively connected to a plurality of lower vertical poles (2) of the gate frame on the sliding formwork through a plurality of pull rods (25).

10. The slip form for construction of a cylinder wall of an ultra-large diameter LNG storage tank according to claim 1, characterized in that: The lower part of the lower upright pole (2) of the right side of the portal frame is provided with two guide wheels from top to bottom, and the two guide wheels are respectively connected in a rolling manner to the outer wall of the LNG storage tank cylinder.

Images