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cal wind speed (CWS) during construction is determined as the maximum gust wind at the height of the MSS. 施工过程中临界风速的定义为：设备高度的最大阵风风速
Critical wind speeds (CWS) for various construction stages are as follows:
不同工况下设备所能承受的临界风速
1. Longitudinal launching纵向推进: 0 ÷ 12 m/sec. (refer note 参见备注1)
2. During concreting混凝土浇注: 0 ÷ 22 m/sec. (refer note 1参见备注1)
3. LG parked (NO WORK)设备就位，不工作:
23 ÷ 30 m/sec (refer note 1 & 2参见备注1、2)
4. Secured (special procedure)采取安全措施（特殊工况）:
30 ÷ 68 m/sec (refer note 3参见备注3)
Note 备注1: NRS is only liable for items 1, 2 and 3 NRS公司仅对1、2、3项负责。
Note 备注2: Parked is defined as the LG in position ready to concrete设备就位定义为混凝土浇注位置
Note备注 3: The client is responsible to implement procedures to secure the LG in wind speeds above 30m/s当风速超过30M/S时，客户需负责执行安全绑扎措施。
5. Hydraulic Equipment 液压设备
5.1 General 总则
All hydraulic equipments are supplied from authorised and certified manufactures. All hydraulic arrangements will be supplied complete with pump, control-valves, hoses, cylinders and fittings.
所有液压设备由经过授权并具有资质的制造商提供。
所有液压系统均为有油泵，控制阀门，软管，油缸及管件的整个系统。
Hydraulic oil is not included in the scope of supply due to transport regulations, and has to be purchased by the client.由于运输方面的规定，液压油不在供货范围内，由客户自行购买。
The under slung SL-MSS consists of the following complete operational hydraulic arrangements. (Subjected to changes during the detail design of the MSS)
下行式自行式MSS包括如下液压系统（详细设计过程中有可能变更）
• Rear and Front main jack arrangement 前后主千斤顶系统
• Longitudinal and side launching arrangement 纵向和横向推进油缸
• Vertical Nose adjustment arrangement (Not installed on this MSS) 鼻梁纵向调整系统（本设备不用）
• Bottom Slab vertical adjustment arrangement 底模纵向调整系统
• Internal FW Rolling Wagon arrangement 内模推进车系统（可选）
• Supporting Bracket installation arrangement (option) 牛腿安装系统（可选）
• Front deflection recovery 挠度调整系统
• Supporting Bracket launching device牛腿推进系统
5.2 Rear and Front Main Jack Arrangement前后主千斤顶系统
The rear and front main jacks supply the required support of the MSS during concreting. 前后主千斤顶系统在浇注混凝土过程中支撑MSS。
The rear arrangement is located at either the rear Supporting Bracket or the Suspension Gallows, pending on the concreting sequence. The front arrangement is always located at the front Supporting Bracket.
后千斤顶根据混凝土施工程序坐在后牛腿或吊架上，前主千斤顶总是在前牛腿上。
Each arrangement consists of two (2) hydraulic single acting cylinders with mechanical lock-nut, connected to one (1) hydraulic pump unit.
每个系统包括2台单向液压油缸，用一台液压泵相连。
5.3 Longitudinal and side launching arrangement 纵向和横向推进液压装置
The Longitudinal and side launching arrangement provides the required longitudinal and transverse movement of the MSS. 用于纵向和横向推动MSS。
Each separate arrangement consists of one (1) pump unit connected to two (2) double acting side-launching cylinders and one (1) double acting launching cylinder. There are four (4) side launching arrangements and two (2) longitudinal launching arrangements positioned on the brackets, plus two (2) side launching cylinders placed on the “horns” of the suspension gallow.
每台系统包括1台油泵连接2台双向液压油缸和一台双向液压推进油缸。牛腿上共设4台横向推进油缸，2台纵向推进油缸，此外，在吊架牛腿上设有2台横向推进油缸。
5.4 Vertical Nose Adjustment Arrangement 鼻梁纵向调整装置
Not installed 不适用
5.5 Bottom Slab vertical adjustment arrangement 底版纵向调整装置
The Bottom Slab vertical adjustment arrangement provides the vertical required adjustment of the Bottom Slab Formwork (FW) during adjustment of the cambering. 在调整预拱度时对外模地板进行垂直向调整
The system consists of two (2) separate “bottle” jack cylinder with integrated manual hand pump.
包括2套瓶式千斤顶并附带手动油泵。
5.6 Internal FW Rolling Wagon arrangement 内模小车
The Internal FW Rolling Wagon arrangement provides the folding of the internal FW panels, as well as the longitudinal displacement and reinstallation of the folded FW panels. 用于折叠内模及内模安装拆卸。
The system consists of one (1) pump unit located on the Rolling Wagon, connected to two (2) hydraulic powered driving wheels, and four (4) vertical double acting cylinders, and four (4) horizontal double acting cylinders.
包括1套油泵，连接2套液压滚轮，4套双向垂直液压油缸和四套水平液压油缸。
5.7 Supporting Bracket installation arrangement (option) 牛腿安装装置（可选）
The Supporting Bracket installation arrangement provides the stressing of the tension bars for the installation of the Supporting Brackets.
牛腿安装装置提供可用于牛腿张拉。
The system consists of one (1) portable pump unit, connected to one (1) single acting hollow cylinder with spring return.
包括1套手动油泵，同1单向空心液压油缸连接。
5.8 Nose deflection recovey 鼻梁挠度调整装置
The noise deflection recovey device provides the recovey of the deflection during self-launching such as support of the structure during transit and placing of bracket on the front pier. 在设备自行时如在运输，安装牛腿过程中调整挠度。
The system consists of one (1) portable pump unit, connected to one (2) single acting hollow cylinder with spring return.
包括1套袖珍油泵，同2台单向空心油缸连接。
5.9 Supporting Bracket launching device 牛腿推进装置
The Supporting Bracket launching device provides the transferring of the brackets from one pier to the other.
将牛腿从一根墩柱向另一根墩柱推进。
The system consists of two (2) hydraulic capstans that power a closed ring of steel rope. The brackets are connected to the rope via connecting plates. Powering the capstan, the ropes run forward or backward, moving the bracket itself (bracket is rolling under the main truss).
包括2套液压绞盘，牛腿用钢丝绳通过连接板连接起来。绞盘通电后，钢丝绳前后移动，带动牛腿（牛腿在主珩架下移动）
6.0 Equipment Specifications 设备规格
6.1 Technical Data 技术参数
MSS length MSS 长度 大约 : approx. 124 m
Formwork length 模板长度 : 58.4 m
SWL lifting capacity : not applicable
The below stated MSS weight are to be considered as guidelines, and are subjected to changes during the detail design.下列MSS各部位重量仅供参考，详细设计中可能发生变化。
Table 6.1-A Equipment weights 设备重量
Item 项目 Q.ty
数量 单件重量 - n –
- 总重
Main girder – 61m 主梁 2 140 280
Rear nose – 20 m 后鼻梁 2 16 32
Front nose – 43 m 前鼻梁 2 48 96
Transverse support beams / supporting brackets 横梁/牛腿
Launching Wagon 推进工作车 4 6 24
Main Support Beam / Supporting bracket 牛腿 4 20 80
Platform & access gangways 工作平台及步道 1 25 25
Transverse beam 横梁 11 2.2 24.2
Main suspension gallow 主吊架 1 18 18
Central suspension beam 中间吊架 2 5 10
Front transverse support beam 前横支撑梁 1 5 5
Rear supporting & launching trolley 后支撑，推进车 2 1 2
External formwork 外模 1 130 130
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