WO2018214334A1 - 一种半潜船浮箱水上吊装定位方法 - Google Patents
一种半潜船浮箱水上吊装定位方法 Download PDFInfo
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- WO2018214334A1 WO2018214334A1 PCT/CN2017/100638 CN2017100638W WO2018214334A1 WO 2018214334 A1 WO2018214334 A1 WO 2018214334A1 CN 2017100638 W CN2017100638 W CN 2017100638W WO 2018214334 A1 WO2018214334 A1 WO 2018214334A1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
- B63B73/40—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms characterised by joining methods
- B63B73/43—Welding, e.g. laser welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
- B63B73/20—Building or assembling prefabricated vessel modules or parts other than hull blocks, e.g. engine rooms, rudders, propellers, superstructures, berths, holds or tanks
Definitions
- the invention relates to the technical field of ships, and in particular relates to a method for hoisting and positioning a semi-submersible ship pontoon.
- the object of the present invention is to provide a method for hoisting and positioning a semi-submersible pontoon water, which avoids the influence of the sinking deformation of the stern structure on the shafting accuracy.
- Providing a semi-submersible pontoon water lifting positioning method comprises the following steps:
- Step S10 dividing the floating box into a plurality of total segments at the total group site
- Step S20 pre-measuring the level of the main deck to be carried with the total section, and drawing a installation line to determine the installation position of the total section;
- Step S30 Perform a scribing on the lower margin of the total segment according to the measurement result of the levelness, and pre-cut the margin on the total segment on the ground;
- Step S40 After the semi-submersible ship floats, two cranes are used to hoist the total section to the installation position. Place and fix the installation.
- the total section is installed at a position on both sides of the main deck along the width direction thereof and adjacent to the bow.
- a plurality of benchmarks are arranged on the main deck adjacent to the installation position.
- a plurality of limit codes are arranged on the main deck and at the installation line.
- the installation line includes a first first line and a second side line, and the first side line is spaced apart from the first limit. a code, where the second edge is spaced apart by two of the second limit codes, and one of the first limit codes is adjacent to one of the second limit codes.
- the step S30 specifically includes the following steps:
- Step S31 measuring the size of a plurality of the total segments on the ground, and correcting the installation line on the main deck according to the measurement result;
- Step S32 pre-positioning a pontoon pad at the installation position according to the dimension measurement result of the total segment and the measurement result of the levelness, and the pontoon pad is welded to the main deck.
- the height of the weld bead of the pontoon pad and the main deck is 15-25 mm, and the weld bead is adjacent to the main deck side.
- the width is 15-25mm.
- the step S40 specifically includes the following steps:
- Step S41 dividing a plurality of the total segments on the total group site into two groups of total segments, and the two groups of the total segments Adjacent to the first crane and the second crane, respectively, wherein the second crane is close to the bow;
- Step S42 the first crane and the second crane are respectively respectively hoisted and positioned adjacent to the corresponding section on the main deck and welded to the pontoon pad;
- first of the total sections hoisted by the first crane and the second of the total sections hoisted by the second crane are respectively positioned at two opposite corners of the installation position, And the second total section is installed adjacent to the side of the bow.
- the lower legs of the four corners of the total section are welded on the pontoon pad, each of which has a length of 2 -4m.
- the lower legs of the opposite two transverse walls of the total section are welded to the pontoon pad, each of which has a length of 1-2 m.
- the utility model has the beneficial effects that: in the total group site, the pontoon is divided into a plurality of total segments according to the weight of the pontoon, and the lower margin line of the total segment is drawn according to the level of the main deck to achieve precise positioning of the total segments.
- the pontoon lifting positioning of the pontoon can be carried out through the crane of the dock. Since the buoyancy of the water is sufficient to support the suspended position of the hull of the hull, the crotch is avoided.
- the sinking deformation of the structure affects the accuracy of the semi-submersible ship's shafting.
- FIG. 1 is a schematic diagram of a position of a limit code and a benchmark according to an embodiment of the present invention.
- FIG 2 is a schematic view of the lower leg of the pontoon being welded to the main deck by a pontoon pad according to an embodiment of the present invention.
- FIG. 3 is a schematic view showing the layout of the general section of the pontoon and the installation position on the main deck according to the embodiment of the present invention.
- Figure 4 is a hoisting and positioning construction diagram of the first state of the general section of the pontoon.
- Figure 5 is a hoisting and positioning construction diagram of the second state of the general section of the pontoon.
- Figure 6 is a hoisting and positioning construction diagram of the third state of the general section of the pontoon.
- Figure 7 is a hoisting and positioning construction diagram of the fourth state of the general section of the pontoon.
- Figure 8 is a view showing the welding position of the general section of the floating tank.
- connection In the description of the present invention, the terms “connected”, “connected”, and “fixed” are to be understood broadly, and may be, for example, a fixed connection, a detachable connection, or an integral, unless otherwise specifically defined and defined. It can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, which can be the internal connection of two elements or the interaction of two elements.
- intermediate medium which can be the internal connection of two elements or the interaction of two elements.
- the semi-submersible pontoon water lifting positioning method comprises the following steps:
- Step S10 dividing the floating box into a plurality of total segments at the total group site
- Step S20 pre-measuring the level of the main deck to be carried with the total section, and drawing a installation line to determine the installation position of the total section;
- Step S30 Perform a scribing on the lower margin of the total segment according to the measurement result of the levelness, and pre-cut the margin on the total segment on the ground;
- Step S40 After the semi-submersible ship floats, the two sections are hoisted by the two cranes to the installation position and fixedly installed.
- the pontoon in the total group site, is divided into a plurality of total segments according to the weight of the pontoon, and the lower margin line of the total segment is drawn according to the level of the main deck to achieve accurate positioning of the total segments in the main segment.
- the sinking deformation of the structure affects the accuracy of the semi-submersible ship's shafting.
- lower margin line refers to the margin line to be cut at the lower end of the total section for the total section to be horizontal when the total section is positioned on the main deck.
- the installation position of the total section is located on both sides of the main deck along the width direction thereof and close to the bow, that is, the installation position of the main section is divided into two rows of areas extending along the length of the main deck, and the two rows are spaced apart. It is located on both sides of the main deck along its width and close to the bow.
- the general section is installed on the main deck according to this layout to avoid the imbalance of the center of gravity of the semi-submersible ship.
- a plurality of benchmarks are disposed on the main deck adjacent to the installation location.
- the setting of the benchmark is beneficial to determine the level of the main deck and measure the lower margin of the pontoon according to the level, to ensure that the total section is leveled after being positioned on the main deck.
- a plurality of limit codes are disposed on the main deck and at the installation line.
- the setting of the limit code can make the lifting
- the total section is accurately moved along the limit code to the installation position to facilitate the hoisting positioning of the total section, and the limit section can be used to limit the total section after the hoisting position is in place, preventing the total section and the main section. Positional displacement occurs when the deck is welded.
- the installation line includes a first edge and a second edge, wherein the first edge is spaced apart from the first limit code, and the second edge is provided with two of the first And a second limit code, wherein the first limit code is adjacent to one of the second limit codes.
- the installation location is divided into a plurality of sub-regions, each sub-region corresponding to a corresponding total segment, and each sub-region is surrounded by a mounting line, and is respectively arranged at two connected edges of the installation line.
- Two first limit codes and two second limit codes, and one of the first limit codes and one of the second limit codes are adjacent to the corner, which facilitates accurate positioning of the total segment.
- step S30 specifically includes the following steps:
- Step S31 measuring the size of a plurality of the total segments on the ground, and correcting the installation line on the main deck according to the measurement result;
- Step S32 pre-positioning a pontoon pad at the installation position according to the dimension measurement result of the total segment and the measurement result of the levelness, and the pontoon pad is welded to the main deck.
- the width of the pontoon pad is larger than the width of the lower leg of the pontoon to be welded, and the pontoon pad is pre-positioned at the installation position so that the total section is stably fixed on the main deck.
- the height of the weld bead of the pontoon pad and the main deck weld is 15-25 mm, and the width of the weld bead near the side of the main deck is 15-25 mm.
- the height of the weld bead at the weld of the pontoon pad and the main deck is preferably 20 mm, and the width of the weld bead near the side of the main deck is preferably 20 mm, which improves the welding efficiency on the basis of the weld strength.
- the step S40 specifically includes the following steps:
- Step S41 dividing a plurality of the total segments on the total group site into two groups of total segments, and the two groups of the total segments Adjacent to the first crane and the second crane, respectively, wherein the second crane is close to the bow;
- Step S42 the first crane and the second crane are respectively respectively hoisted and positioned adjacent to the corresponding section on the main deck and welded to the pontoon pad;
- first of the total sections hoisted by the first crane and the second of the total sections hoisted by the second crane are respectively positioned at two opposite corners of the installation position, And the second total section is installed adjacent to the side of the bow.
- the second crane is close to the bow, which can improve the lifting efficiency; the first total section of the two cranes is positioned to the opposite corners of the installation position, which can avoid the semi-submersible after the total section is positioned on the semi-submersible ship.
- the situation of imbalance of gravity appears.
- the second crane in order to avoid the imbalance of the center of gravity of the semi-submersible ship or to minimize the imbalance of the center of gravity of the semi-submersible ship, when the first total section of the first crane is hoisted above a certain sub-area of the installation position, The second crane is hoisted and the first general section adjacent to it is placed above the main deck; when the first general section of the first crane is positioned and released, the second crane immediately lifts the first total section of the crane Positioned in the corresponding sub-area on the main deck; at this time, the first crane returns to the second general section adjacent to the hoisting and is placed above the main deck, and the first general section of the second crane is positioned and released. The first crane immediately positions the second general section of its hoisting into the corresponding sub-area on the main deck, and so on, until all the sections are hoisted.
- each bead length is 2-4 m.
- the length of each bead is preferably 3 m, and the length of each side of the bead at the corner is 1.5 m.
- the lower legs of the opposite transverse walls of the total section are welded on the pontoon pad, each of which has a length of 1-2 m. It is preferably 1.5 m.
- the hoisting and positioning method of the pontoon specifically includes the following steps:
- the 90,000-ton semi-submersible pontoon is divided into four general sections: the first total section 110, the second total section 120, the third total section 130, and the fourth total section 140 (see Table 1). ), after the lifting time of the total section is 90,000 tons of semi-submersible ships, all the cables are tightened (by the right side of the dock wall) (and a number of nylon cable cables are tightened to ensure the pontoon during the lifting of the pontoons in the dock) Cable safety), continuous lifting with 600 tons of 3# and 4# vehicles;
- the third section 130, the fourth section 140 total section lifting weight (including lifting row) is 568 tons, according to the international major lifting management regulations, for the level II lifting, with the second crane 220 lifting; the first total The lifting weight (including the hanging row) of the section 110/second total section 120 is 525 tons, and is hoisted by the first crane 210.
- the positioning personnel cooperate to measure the four total sections on the ground, and correct the installation line on the main deck 1 according to the measurement result, and combine the measured horizontality data of the main deck 1 to draw the remaining amount of the floating tank. Line, pre-repair the cutting amount on the ground, and install the pontoon water gauge in advance (used to observe the draught of the pontoon);
- the pontoon pad 5 is pre-positioned on the installation position of the pontoon on the main deck 1, and the raft plate 5 is welded to the main deck 1 to be opened.
- the pontoon pad 5 is welded to the main deck 1 corresponding to the mounting position, the height of the groove is 20 mm, and the width of the side close to the main deck 1 is 20 mm.
- the first crane 210 and the second crane 220 are spaced apart, and the second crane 220 is adjacent to the bow.
- the first total section 110 and the second total section 120 are adjacent to the first crane 210.
- the third total section 130 and the fourth total section 140 are adjacent to the second crane 220, and the first total section 110, the second total section 120, the third total section 130, and the fourth total section 140 are respectively positioned and mounted on the main deck 1.
- the second crane 220 immediately positions the fourth total section 140, and the first crane 210 then hooks the second total section 120 to stand by.
- the first crane 210 immediately positions the second total section 120, and then the second crane 220 is then hooked to the third total section 130 to stand by.
- the second crane 220 immediately positions the third total section 130.
- each of the total sections is positioned to meet the constraints shown in Figure 8 so that the sections are stably welded to the main deck. Specifically, the length of the first bead 71 when the four corner positions of each sub-area are welded to the lower leg 6 of the corresponding total section is 3 m, and the length of the second bead 72 welded by the lower leg 6 of the transverse wall is 1.5 m.
- an embodiment means that the specific features, structures, materials or features described in connection with the embodiments are included in at least one embodiment of the invention.
- the schematic representation of the above terms does not necessarily refer to the same embodiment.
- the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments.
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Abstract
一种半潜船浮箱水上吊装定位方法，包括以下步骤：S10、在总组场地将浮箱分成若干总段；S20、预先测量待搭载总段的主甲板的水平度，堪划安装线以确定总段的安装位置；S30、根据水平度的测量结果对总段的下口余量线进行划线，在地面对总段预修割余量；S40、半潜船起浮后，采用两台吊机轮流将总段吊装至安装位置处并固定安装。该方法实现了对各总段在主甲板上的安装位置的精准定位，并且，在半潜船起浮后，通过船坞的吊机即可进行水上浮箱吊装定位，由于水的浮力足以支撑船体艉部的悬空位置，因此避免了艉部结构的下沉变形对半潜船的轴系精度造成影响。
Description
本发明涉及船舶技术领域，具体涉及一种半潜船浮箱水上吊装定位方法。
一般情况下，在半潜船船坞建造阶段，即在半潜船出坞前，在干坞内即完成浮箱的吊装定位。对于较大载重的半潜船而言，由于浮箱的重量大，且半潜船的梶部的线型特殊，船艉下方无法布置坞墩，船坞阶段梶部基本处于悬空状态，若此时吊装艉浮箱，浮箱的重量会导致船体的梶部下层变形，这种变形对轴系的影响无法预估，存在极大的风险。
发明内容
本发明的目的在于：提供一种半潜船浮箱水上吊装定位方法，避免了船艉部结构的下沉变形对轴系精度造成影响。
为达上述目的，本发明采用以下技术方案：
提供一种半潜船浮箱水上吊装定位方法，包括以下步骤：
步骤S10、在总组场地将浮箱分成若干总段；
步骤S20、预先测量待搭载所述总段的主甲板的水平度，堪划安装线以确定所述总段的安装位置；
步骤S30、根据所述水平度的测量结果对所述总段的下口余量线进行划线，在地面对所述总段预修割余量；
步骤S40、半潜船起浮后，采用两台吊机轮流将所述总段吊装至所述安装位
置处并固定安装。
作为半潜船浮箱水上吊装定位方法的一种优选方案，所述总段的安装位置位于所述主甲板上沿其宽度方向的两侧并靠近船艉。
作为半潜船浮箱水上吊装定位方法的一种优选方案，所述主甲板上邻近所述安装位置间隔设置有若干标杆。
作为半潜船浮箱水上吊装定位方法的一种优选方案，所述主甲板上并位于所述安装线处设置有若干限位码。
作为半潜船浮箱水上吊装定位方法的一种优选方案，所述安装线包括相连的第一边线和第二边线，所述第一边线处间隔设置有两个所述第一限位码，所述第二边线处间隔设置有两个所述第二限位码，其中一个所述第一限位码邻近一个所述第二限位码。
作为半潜船浮箱水上吊装定位方法的一种优选方案，所述步骤S30具体包括以下步骤：
步骤S31、在地面对若干所述总段的尺寸进行测量，并根据测量结果对所述主甲板上的安装线进行修正；
步骤S32、根据所述总段的尺寸测量结果以及所述水平度的测量结果在所述安装位置预定位浮箱垫板，所述浮箱垫板与所述主甲板焊接。
作为半潜船浮箱水上吊装定位方法的一种优选方案，所述浮箱垫板与所述主甲板焊接处的焊道的高度为15-25mm，所述焊道靠近所述主甲板一侧的宽度为15-25mm。
作为半潜船浮箱水上吊装定位方法的一种优选方案，所述步骤S40具体包括以下步骤：
步骤S41、将所述总组场地上的若干所述总段分成两组总段，两组所述总段
分别邻近第一吊机和第二吊机，其中，所述第二吊机靠近船艉；
步骤S42、所述第一吊机和所述第二吊机分别轮流吊装与其邻近的总段定位至所述主甲板上对应的安装位置处，并焊接在所述浮箱垫板上；
其中，通过所述第一吊机吊装的第一个所述总段和通过所述第二吊机吊装的第二个所述总段分别定位安装在所述安装位置的两个对角处，且第二个所述总段邻近船艉一侧安装。
作为半潜船浮箱水上吊装定位方法的一种优选方案，所述步骤S42中，所述总段的四个转角的下脚均焊接在所述浮箱垫板上，每条焊道长度为2-4m。
作为半潜船浮箱水上吊装定位方法的一种优选方案，所述总段的相对的两个横壁的下脚均焊接在所述浮箱垫板上，每条焊道长度为1-2m。
本发明的有益效果为：在总组场地时，根据浮箱的重量将浮箱分成若干总段，根据主甲板的水平度情况划好总段的下口余量线，实现精准定位各总段在主甲板上的安装位置，然后，在半潜船起浮后，通过船坞的吊机即可以进行水上浮箱吊装定位，由于水的浮力足以支撑船体艉部的悬空位置，因此避免了艉部结构的下沉变形对半潜船的轴系精度造成影响。
下面根据附图和实施例对本发明作进一步详细说明。
图1为本发明实施例所述的限位码及标杆的位置示意图。
图2为本发明实施例所述的浮箱的下脚通过浮箱垫板焊接在主甲板上的示意图。
图3为本发明实施例所述的浮箱的总段布局及主甲板上的安装位置示意图。
图4为浮箱的总段的第一状态的吊装定位施工图。
图5为浮箱的总段的第二状态的吊装定位施工图。
图6为浮箱的总段的第三状态的吊装定位施工图。
图7为浮箱的总段的第四状态的吊装定位施工图。
图8为浮箱的总段的施焊位置图。
图中：
1、主甲板；2、标杆；3、限位码；4、子区域；41、第一子区域；42、第二子区域；43、第三子区域；44、第四子区域；5、浮箱垫板；6、下脚；71、第一焊道；72、第二焊道；
110、第一总段；120、第二总段；130、第三总段；140、第四总段；210、第一吊机；220、第二吊机。
为使本发明解决的技术问题、采用的技术方案和达到的技术效果更加清楚，下面将结合附图对本发明实施例的技术方案作进一步的详细描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
在本发明的描述中，除非另有明确的规定和限定，术语“相连”、“连接”、“固定”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。
本实施例中，此半潜船浮箱水上吊装定位方法，包括以下步骤：
步骤S10、在总组场地将浮箱分成若干总段；
步骤S20、预先测量待搭载所述总段的主甲板的水平度，堪划安装线以确定所述总段的安装位置；
步骤S30、根据所述水平度的测量结果对所述总段的下口余量线进行划线，在地面对所述总段预修割余量；
步骤S40、半潜船起浮后，采用两台吊机轮流将所述总段吊装至所述安装位置处并固定安装。
本实施例中，在总组场地时，根据浮箱的重量将浮箱分成若干总段，根据主甲板的水平度情况划好总段的下口余量线，实现精准定位各总段在主甲板上的安装位置；然后，在半潜船下水起浮后，通过船坞的吊机即可以进行水上浮箱吊装定位，由于水的浮力足以支撑船体艉部的悬空位置，因此，避免了艉部结构的下沉变形对半潜船的轴系精度造成影响。
术语“下口余量线”指总段定位安装在主甲板上时，为使总段处于水平而在总段的下端划好的待切割的余量线。
所述总段的安装位置位于所述主甲板上沿其宽度方向的两侧并靠近船艉，即总段的安装位置分为沿主甲板的长度方向延伸的两排区域，两排区域间隔布置，且位于主甲板上沿其宽度方向的两侧并靠近船艉，总段按照该布局进行安装在主甲板上，可以避免半潜船重心失衡。
具体地，所述主甲板上邻近所述安装位置间隔设置有若干标杆。标杆的设置有利于确定主甲板的水平度并根据该水平度测量浮箱的下口余量线，保证总段吊装定位至主甲板上之后保持水平。
作为本发明优选的实施例，所述主甲板上并位于所述安装线处设置有若干限位码。吊机吊装总段下放至安装位置处的过程中，限位码的设置可以使吊装
的总段沿该限位码准确地移动至安装位置处，方便总段的吊装定位，且在总段吊装到位后还可以利用此限位码对此总段进行限位，防止总段与主甲板焊接时发生位置偏移。
所述安装线包括相连的第一边线和第二边线，所述第一边线处间隔设置有两个所述第一限位码，所述第二边线处间隔设置有两个所述第二限位码，其中一个所述第一限位码邻近一个所述第二限位码。具体地，安装位置分为若干个子区域，每个子区域与相应的某个总段相对应，每个子区域的四周划有安装线，在安装线的构成转角的两条相连的边线处分别间隔设置两个第一限位码、两个第二限位码，且其中一个第一限位码和其中一个第二限位码邻近该转角，有利于总段的精准定位。
具体地，所述步骤S30具体包括以下步骤：
步骤S31、在地面对若干所述总段的尺寸进行测量，并根据测量结果对所述主甲板上的安装线进行修正；
步骤S32、根据所述总段的尺寸测量结果以及所述水平度的测量结果在所述安装位置预定位浮箱垫板，所述浮箱垫板与所述主甲板焊接。
本实施例中，浮箱垫板的宽度大于浮箱待焊接的下脚的宽度，在安装位置预定位浮箱垫板，使总段稳定地固定在主甲板上。
所述浮箱垫板与所述主甲板焊接处的焊道的高度为15-25mm，所述焊道靠近所述主甲板一侧的宽度为15-25mm。本实施例中，浮箱垫板与主甲板焊接处的焊道的高度优选为20mm，焊道靠近所述主甲板一侧的宽度优选为20mm，保证焊接强度的基础上提高了焊接效率。
所述步骤S40具体包括以下步骤：
步骤S41、将所述总组场地上的若干所述总段分成两组总段，两组所述总段
分别邻近第一吊机和第二吊机，其中，所述第二吊机靠近船艉；
步骤S42、所述第一吊机和所述第二吊机分别轮流吊装与其邻近的总段定位至所述主甲板上对应的安装位置处，并焊接在所述浮箱垫板上；
其中，通过所述第一吊机吊装的第一个所述总段和通过所述第二吊机吊装的第二个所述总段分别定位安装在所述安装位置的两个对角处，且第二个所述总段邻近船艉一侧安装。
第二吊机靠近船艉，可以提高吊装效率；将两台吊机吊装的第一个总段定位至安装位置的两个对角处，可以避免总段定位至半潜船上之后造成半潜船重心失衡的情况出现。具体地，在主甲板上，为避免半潜船重心失衡或者将半潜船重心失衡的时间降到最低，第一吊机吊装的第一个总段至安装位置的某个子区域上方时，第二吊机即吊装与其邻近的第一个总段至主甲板上方待命；当第一吊机吊装的第一个总段定位松钩后，第二吊机立即将其吊装的第一个总段定位至主甲板上对应的子区域内；此时，第一吊机返回吊装与其邻近的第二个总段至主甲板上方待命，第二吊机吊装的第一个总段定位松钩后，第一吊机立即将其吊装的第二个总段定位至主甲板上对应的子区域内，如此循环，直至所有的总段吊装完成。
在吊装之前，需要先根据各总段的重量确定两台吊机的行走路线，即各个总段的吊装顺序，以确保两台吊机中的行走路线最短，同时可以使船舶保持平衡，避免船舶重心不稳。
优选地，所述步骤S42中，所述总段的四个转角的下脚均焊接在所述浮箱垫板上，每条焊道长度为2-4m。本实施例中，为保证浮箱的各部分与浮箱垫板连接的稳定性保持一致，每条焊道的长度优选为3m，且转角处每一侧焊道的长度为1.5m。
为进一步提高总段在主甲板上的稳定性，避免半潜船失衡，所述总段相对的两个横壁的下脚均焊接在所述浮箱垫板上，每条焊道长度为1-2m，优选为1.5m。
为进一步说明本发明的技术方案，本发明以9万吨半潜船的浮箱吊装定位为例进行说明，该浮箱吊装定位方法具体包括以下步骤：
一、吊装前的准备工作：
1、在总组场地上将9万吨半潜船浮箱分为第一总段110、第二总段120、第三总段130、第四总段140四个总段吊装(见表1)，总段吊装时机为9万吨半潜船起浮以后，(靠右侧坞壁)将所有缆绳带紧(并增加若干条尼龙缆绳带缆拉紧，以确保坞内浮箱吊装期间的带缆安全)，用600吨3#和4#车单机连续吊装；
表1.总段外形尺寸和重量
其中，第三总段130、第四总段140总段吊装重量(含吊排)为568吨，根据国际重大件吊装管理规定，为II级吊装，以第二吊机220吊装；第一总段110/第二总段120总段吊装重量(含吊排)为525吨，以第一吊机210吊装。
2、定位配合预先测量主甲板1上浮箱安装位置的水平度情况，在主甲板1上提前划安装线，确定安装位置，安装人员在主甲板1上靠近安装位置的转角处立好标杆2，标杆2的高度为1m，在标杆2上划水平线，以确定主甲板1的水平度，并在安装位置的子区域4的外周间隔安装若干限位码3(如图1所示)；
3、定位人员配合在地面对四个总段进行测量，根据测量结果对主甲板1上的安装线进行修正，并结合测得的主甲板1的水平度数据划好浮箱下口余量线，在地面预修割余量，并提前做好浮箱水尺的安装(用来观察浮箱的吃水情况)；
4、根据对浮箱及主甲板1上安装位置的测量数据，在主甲板1上浮箱的安装位置预定位浮箱垫板5，在浮箱垫板5与主甲板1焊接一侧开设如图2所示的坡口，将浮箱垫板5焊接在与安装位置对应的主甲板1上，该坡口的高度为20mm，靠近主甲板1一侧的宽度为20mm。
二、浮箱吊装施工流程：
按照浮箱吊装工艺方案，吊装前确认吊机行走范围内无其他影响吊装的物件，船舶起浮带缆的缆绳方案需要考虑不能阻挡浮箱吊运行走路线，吊运过程中还需要密切关注吊机/浮箱/缆绳相对位置，避免碰撞；
根据如图3所示的总组场地上各总段的摆放位置及半潜船上浮箱的安装位置，并按照如图4至图7的顺序实施吊装定位。
如图3所示，第一吊机210和第二吊机220间隔设置，第二吊机220靠近船艉，其中，第一总段110、第二总段120靠近第一吊机210，第三总段130、第四总段140靠近第二吊机220，第一总段110、第二总段120、第三总段130、第四总段140将分别定位安装至主甲板1上的第一子区域41、第二子区域42、第三子区域43、第四子区域44。
如图4所示，第一吊机210吊装定位第一总段110时，第二吊机220挂钩第四总段140待命。
如图5所示，第一总段110定位松钩后，第二吊机220立即定位第四总段140，此时第一吊机210随即挂钩第二总段120待命。
如图6所示，第四总段140定位松钩后，第一吊机210立即定位第二总段120，此时第二吊机220随即挂钩第三总段130待命。
如图7所示，第二总段120定位松钩后，第二吊机220立即定位第三总段130。
每一个总段定位松钩时需满足如图8所示的约束条件，以使各总段稳定地焊接在主甲板上。具体地，每一子区域的四个转角位置与相应的总段的下脚6焊接时的第一焊道71的长度为3m，横壁的下脚6焊接的第二焊道72的长度为1.5m。
在本说明书的描述中，参考术语“一实施例”的描述意指结合该实施例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例中。在本说明
书中，对上述术语的示意性表述不一定指的是相同的实施例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例中以合适的方式结合。
以上结合具体实施例描述了本发明的技术原理。这些描述只是为了解释本发明的原理，而不能以任何方式解释为对本发明保护范围的限制。基于此处的解释，本领域的技术人员不需要付出创造性的劳动即可联想到本发明的其它具体实施方式，这些方式都将落入本发明的保护范围之内。
Claims (10)
- 一种半潜船浮箱水上吊装定位方法，其特征在于，包括以下步骤：步骤S10、在总组场地将浮箱分成若干总段；步骤S20、预先测量待搭载所述总段的主甲板的水平度，堪划安装线以确定所述总段的安装位置；步骤S30、根据所述水平度的测量结果对所述总段的下口余量线进行划线，在地面对所述总段预修割余量；步骤S40、半潜船起浮后，采用两台吊机轮流将所述总段吊装至所述安装位置处并固定安装。
- 根据权利要求1所述的半潜船浮箱水上吊装定位方法，其特征在于，所述总段的安装位置位于所述主甲板上沿其宽度方向的两侧并靠近船艉。
- 根据权利要求1所述的半潜船浮箱水上吊装定位方法，其特征在于，所述主甲板上邻近所述安装位置间隔设置有若干标杆。
- 根据权利要求1所述的半潜船浮箱水上吊装定位方法，其特征在于，所述主甲板上并位于所述安装线处设置有若干限位码。
- 根据权利要求4所述的半潜船浮箱水上吊装定位方法，其特征在于，所述安装线包括相连的第一边线和第二边线，所述第一边线处间隔设置有两个所述第一限位码，所述第二边线处间隔设置有两个所述第二限位码，其中一个所述第一限位码邻近一个所述第二限位码。
- 根据权利要求1所述的半潜船浮箱水上吊装定位方法，其特征在于，所述步骤S30具体包括以下步骤：步骤S31、在地面对若干所述总段的尺寸进行测量，并根据测量结果对所述主甲板上的安装线进行修正；步骤S32、根据所述总段的尺寸测量结果以及所述水平度的测量结果在所述 安装位置预定位浮箱垫板，所述浮箱垫板与所述主甲板焊接。
- 根据权利要求6所述的半潜船浮箱水上吊装定位方法，其特征在于，所述浮箱垫板与所述主甲板焊接处的焊道的高度为15-25mm，所述焊道靠近所述主甲板一侧的宽度为15-25mm。
- 根据权利要求6所述的半潜船浮箱水上吊装定位方法，其特征在于，所述步骤S40具体包括以下步骤：步骤S41、将所述总组场地上的若干所述总段分成两组总段，两组所述总段分别邻近第一吊机和第二吊机，其中，所述第二吊机靠近船艉；步骤S42、所述第一吊机和所述第二吊机分别轮流吊装与其邻近的总段定位至所述主甲板上对应的安装位置处，并焊接在所述浮箱垫板上；其中，通过所述第一吊机吊装的第一个所述总段和通过所述第二吊机吊装的第二个所述总段分别定位安装在所述安装位置的两个对角处，且第二个所述总段邻近船艉一侧安装。
- 根据权利要求8所述的半潜船浮箱水上吊装定位方法，其特征在于，所述步骤S42中，所述总段的四个转角的下脚均焊接在所述浮箱垫板上，每条焊道长度为2-4m。
- 根据权利要求9所述的半潜船浮箱水上吊装定位方法，其特征在于，所述总段的相对的两个横壁的下脚均焊接在所述浮箱垫板上，每条焊道长度为1-2m。
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| CN107161284B (zh) | 2019-02-26 |
| CN107161284A (zh) | 2017-09-15 |
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