WO2007093131A1 - Construction method for sea-crossing bridge - Google Patents
Construction method for sea-crossing bridge Download PDFInfo
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- WO2007093131A1 WO2007093131A1 PCT/CN2007/000576 CN2007000576W WO2007093131A1 WO 2007093131 A1 WO2007093131 A1 WO 2007093131A1 CN 2007000576 W CN2007000576 W CN 2007000576W WO 2007093131 A1 WO2007093131 A1 WO 2007093131A1
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- bridge
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- floating
- floating platform
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D15/00—Movable or portable bridges; Floating bridges
- E01D15/14—Floating bridges, e.g. pontoon bridges
Definitions
- the invention relates to a bridge technology, in particular to a construction technique of a cross-sea bridge.
- cross-sea traffic uses mostly real-base bridges, such as Hangzhou Bay and Donghai Bridge; there are also tunnel schemes, such as the Tsugaru Strait in Japan.
- the foundation bridge technology can be combined with the cables and box girder structures to reduce the cost or safety of the bridge deck to some extent.
- the super-long and ultra-deep The problem is difficult to solve. This will consume a lot of manpower and material resources, so that the cost of the beam will be greatly increased, which will affect the investment value of the infrastructure. Even the original technology cannot be realized.
- the tunnel scheme is limited by the construction period, and the pressure is too large for the ventilation system. The resistance to catastrophic effects such as earthquake resistance is relatively weak.
- the task of the present invention is to solve the problem of investment cost and safety and stability caused by the two problems of ultra-deep and super-long bridges.
- the invention adopts a floating body fixed on the sea bottom by a cable or the like as a buffer platform of a bridge foundation, and the buoyancy of the floating body cancels the bridge itself and the bridge surface load, thereby achieving the purpose of simplifying the bridge structure and stabilizing the bridge foundation.
- a method for constructing a cross-sea bridge characterized in that the floating force generated by the floating body structure under the surface of the water is used to offset part of the bridge body and the load, and to support the weight of the bridge base and the bridge body, and the average density of the floating body structure is lower than that of the water.
- Two or more stages of pontoon construction can be used in the deep sea.
- the floating body structure is integrally formed in a platform-like floating platform structure, and the floating platform is fixed to the bottom of the water by a cable or a column beam.
- the surface of the floating platform is made of materials resistant to seawater salt alkali corrosion and biodegradation.
- the interior is made of lightweight materials.
- the average density of the floating platform is 1/2-1/10 of the average density of the water.
- the cross-sectional area of the pontoon structure and the vertical direction of the bridge deck should be reduced as much as possible to reduce the impact of water flow on the pontoon.
- the width of the pontoon exceeds the deck to stabilize the deck. It is more stable with a floating body connection.
- the invention Compared with the original foundation technology and the tunnel scheme originally used in the cross-sea bridge application, the invention has the advantages of cost saving, rapid construction, strong anti-destructive disaster capability and the like. Make the structure of the cross-sea bridge more rational and greatly reduce the construction cost, or increase the load capacity of the bridge for unit cost.
- Figure 1 is a schematic view of the structure of the present invention.
- 1 is the bridge base
- 2 is the cable
- 3 is the floating platform
- the preset floating body platform (also referred to as a floating platform) in the present invention adopts a floating body structure whose average density is much lower than that of water, and the floating body is fixed under the water surface with a cable or a column beam during construction, and the preset floating body bearing Refer to the local hydrology for the depth of the platform, and the surface of the bridge will not be exposed to the water surface.
- the cable or column beam directly fixes the bottom of the water, and the secondary or multi-stage preset floating body cap connection is connected in the ultra-deep sea area to achieve stability; the tension direction of the cable or column beam is designed to achieve the preset stable posture of the floating platform. aims.
- the bridge is erected on the floating foundation, and can be combined with the structure of the box girder and the stay cable. ⁇
- the destructive force of the seawater is mainly concentrated on the waves on the sea surface, so as to reduce the destructive force, the preset floating part of the floating platform is minimized.
- the volume is carried out using an X-type bridge base
- the buoyancy of the preset floating platform is based on the proper proportion of the total pressure of the bridge and the maximum load. Due to the buoyancy and gravity, the direction of the bridge column and its foundation load and force can be greatly reduced, so that the overall structure of the bridge can be economical.
- the design of the preset floating platform is to refer to the hydrological data such as the flow direction of the water. According to the geographical attributes of the channel, the cross-sectional area in the vertical direction of the surface is generally minimized. Reduce the impact of the water flow on the floating platform, so that the impact of the water flow can be reduced.
- the method is to minimize the thickness of the preset floating platform and the streamline type when designing. At the same time, increase the preset width of the floating platform to increase the pair. Stable control of the floating platform. If the sea water is deep, it is also considered to be more consistent by connecting a plurality of preset floating body caps.
- the bridge base and the floating platform are hard or soft connected, such as a hard connection, which can directly pour the bridge base on the floating platform.
- the shape of the pontoon can be varied, such as square or rectangular, or it can be designed to be wide and thin. Due to the safety and durability of the bridge design, the preset floating platform is designed with reference to the economy. At the same time, it is required to pay attention to the structural stability.
- the floating material and cables and other components are resistant to seawater alkali corrosion and biodegradation. When designing and constructing bridges, it is possible to use component combinations as much as possible, and to build on shore and then assemble and fix on the ocean, which can save a lot of construction costs.
- the structure of the sea-crossing bridge of the present invention adopts a multi-stage floating platform structure, such as a plurality of floating platforms 3 in the figure, the top of the floating platform 3 supports the bridge base 1, and the lower part of the floating platform 3 is fixed by the cable 2 seabed.
- the preset pontoon cap can be used as a bridge to erect a bridge across the sea;
- the floating platform is made of cement tank and the interior is filled with high-strength polystyrene, so that the average density can be less than 300 kg I cubic, resulting in 700 kg of force I cubic buoyancy, thus offsetting the bridge itself and the bridge load. It is only necessary to fix the preset floating body platform by multi-directional oblique pulling of the steel cable on the seabed, without spending huge sums of money to construct a physical pier from the seabed or construct an unsafe tunnel.
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- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
A construction method for a sea-crossing bridge, which adopts floating structures (3) as a buffering bridge foundation to counteract a part of the bridge deadweight and the bridge load and to support the weight of bridge foundation (1) and the bridge body. The floating structure (3) is made of material with average density lower than water and is fixed under water with anchoring cables (2) or the like. The method can spend low cost and avoid the problems of narrow construction area, poor disaster resisting capacity, stagnant airflow and the like.
Description
跨海桥梁的构造方法 技术领域 Construction method of cross-sea bridges
本发明涉及一种桥梁技术， 尤其是跨海桥梁的构造技术。 The invention relates to a bridge technology, in particular to a construction technique of a cross-sea bridge.
背景技术 Background technique
目前的跨海交通多采用实基桥梁， 如杭州湾、 东海大桥； 也有采用隧道方 案的， 如日本津轻海峡等。 实基桥梁技术再配合斜拉索及箱梁等结构， 能在一 定程度上减轻桥粱的深与长带来的成本或安全问题， 但对于大型的跨海桥梁中 存在的超长与超深问题， 却难以解决， 这样会耗损大量的人力物力， 使挢梁的 造价大幅度攀高影响基础建设的投资价值， 甚至按照原有技术是不可以实现。 而隧道方案， 在施工上受场地限制工期长， 而且距离过长对于通风系统压力比 较大， 另外对于抗地震等灾难性影响抵抗比较弱。 At present, cross-sea traffic uses mostly real-base bridges, such as Hangzhou Bay and Donghai Bridge; there are also tunnel schemes, such as the Tsugaru Strait in Japan. The foundation bridge technology can be combined with the cables and box girder structures to reduce the cost or safety of the bridge deck to some extent. However, for the large-scale cross-sea bridges, the super-long and ultra-deep The problem is difficult to solve. This will consume a lot of manpower and material resources, so that the cost of the beam will be greatly increased, which will affect the investment value of the infrastructure. Even the original technology cannot be realized. However, the tunnel scheme is limited by the construction period, and the pressure is too large for the ventilation system. The resistance to catastrophic effects such as earthquake resistance is relatively weak.
发明内容 Summary of the invention
本发明的任务是解决跨海桥梁本身具有超深与超长两大问题带来的投资 成本问题和安全稳定问题。 The task of the present invention is to solve the problem of investment cost and safety and stability caused by the two problems of ultra-deep and super-long bridges.
本发明采用水面下预设通过缆绳等固定在海底的浮体做为桥梁桥基的缓冲 承台， 通过浮体所受浮力抵消桥梁本身及桥面负荷， 达到简化桥梁结构和稳定 桥基的目的。 The invention adopts a floating body fixed on the sea bottom by a cable or the like as a buffer platform of a bridge foundation, and the buoyancy of the floating body cancels the bridge itself and the bridge surface load, thereby achieving the purpose of simplifying the bridge structure and stabilizing the bridge foundation.
本发明的技术方案如下： The technical solution of the present invention is as follows:
一种跨海桥梁的构造方法， 其特征是采用浮体结构拉沉于水面下产生的浮 力来抵消部分桥身和负荷， 并支撑桥基及桥身的重量， 浮体结构的平均密度低 于水。 在深海领域可以采用二级或多级浮台结构。 A method for constructing a cross-sea bridge, characterized in that the floating force generated by the floating body structure under the surface of the water is used to offset part of the bridge body and the load, and to support the weight of the bridge base and the bridge body, and the average density of the floating body structure is lower than that of the water. Two or more stages of pontoon construction can be used in the deep sea.
浮体结构整体呈台状浮台结构， 并通过缆绳或柱梁将浮台的固定于水底。 浮台的表面采用耐海水盐碱腐蚀和生物分解的材料制成， 内部采用轻质材 料， 浮台的平均密度为水平均密度的 1/2—1/10为宜。 通过减少浮台的厚度， The floating body structure is integrally formed in a platform-like floating platform structure, and the floating platform is fixed to the bottom of the water by a cable or a column beam. The surface of the floating platform is made of materials resistant to seawater salt alkali corrosion and biodegradation. The interior is made of lightweight materials. The average density of the floating platform is 1/2-1/10 of the average density of the water. By reducing the thickness of the pontoon,
- 1 - 确 认 本
增加浮台宽度， 减少浮台的平均密度。 浮体承台的外形采用流线型， 以小水流 的冲击力。 - 1 - Confirmation Increase the width of the pontoon and reduce the average density of the pontoon. The shape of the floating platform is streamlined, with the impact of small water flow.
设计时尽量减小浮台结构与桥面垂直方向的横截面积， 以减少水流对浮台 的冲击力。 浮台的宽度超过桥面以加强桥面稳定。 采用浮体连结实现更加稳 定。 The cross-sectional area of the pontoon structure and the vertical direction of the bridge deck should be reduced as much as possible to reduce the impact of water flow on the pontoon. The width of the pontoon exceeds the deck to stabilize the deck. It is more stable with a floating body connection.
本发明相比现有技术具有如下优点： The present invention has the following advantages over the prior art:
本发明相对于原来在跨海桥应用中的实基技术和隧道方案有着节约成本， 施工迅速， 抗破坏灾难能力强等优点。 使跨海桥梁的结构更加合理化而大幅度 降低建造成本， 或提高单位成本的桥梁建造荷载能力。 Compared with the original foundation technology and the tunnel scheme originally used in the cross-sea bridge application, the invention has the advantages of cost saving, rapid construction, strong anti-destructive disaster capability and the like. Make the structure of the cross-sea bridge more rational and greatly reduce the construction cost, or increase the load capacity of the bridge for unit cost.
附图说明 DRAWINGS
图 1为本发明的结构示意图。 Figure 1 is a schematic view of the structure of the present invention.
图中， 1为桥基， 2为缆绳， 3为浮台。 In the figure, 1 is the bridge base, 2 is the cable, and 3 is the floating platform.
具体实施方式 detailed description
本发明中的预设的浮体承台 （也可称为浮台） 是采用平均密度大大低于水 的浮体结构， 在施工时将浮体用缆绳或柱梁固定在水面下， 预设的浮体承台下 沉深度参考当地水文， 以桥梁使用期限内不露出水面为准。 缆绳或柱梁直接固 定水底， 在超深海域进行二级或多级预设的浮体承台连接， 以实现稳定为准； 缆绳或柱梁拉力方向设计以实现预设的浮体承台稳定姿态为目标。 而桥梁就在 此浮基上架设， 可以结合箱梁及斜拉索等结构配合，· 另外海水的破坏力主要集 中于海面的波浪， 所以为减少破坏力尽量减少预设的浮体承台出水部分体积， 采用 X型等桥基进行。 . The preset floating body platform (also referred to as a floating platform) in the present invention adopts a floating body structure whose average density is much lower than that of water, and the floating body is fixed under the water surface with a cable or a column beam during construction, and the preset floating body bearing Refer to the local hydrology for the depth of the platform, and the surface of the bridge will not be exposed to the water surface. The cable or column beam directly fixes the bottom of the water, and the secondary or multi-stage preset floating body cap connection is connected in the ultra-deep sea area to achieve stability; the tension direction of the cable or column beam is designed to achieve the preset stable posture of the floating platform. aims. The bridge is erected on the floating foundation, and can be combined with the structure of the box girder and the stay cable. · In addition, the destructive force of the seawater is mainly concentrated on the waves on the sea surface, so as to reduce the destructive force, the preset floating part of the floating platform is minimized. The volume is carried out using an X-type bridge base. .
预设的浮体承台的浮力以超出桥身及最大荷载总压力适当比例为准。 由于 浮力与重力对抗， 可以大幅度减少桥柱及其基础负荷和力的方向， 这样就可以 实现桥梁整体结构的经济性。 但预设的浮体承台设计时要参看水流流向等水文 资料， 根据海峡的地理属性， 一般来说尽量减少挢面垂直方向的横截面积， 以
减少水流对浮台的冲击力， 这样就可以减少水流的冲击力， 办法是设计时尽量 减少预设的浮体承台厚度和采用流线型； 同时增 ¾1预设的浮体承台宽度， 以加 大对浮台的稳定控制。 如果海水较深， 还可以考虑将多个预设的浮体承台连 贯， 这样更加稳定。 The buoyancy of the preset floating platform is based on the proper proportion of the total pressure of the bridge and the maximum load. Due to the buoyancy and gravity, the direction of the bridge column and its foundation load and force can be greatly reduced, so that the overall structure of the bridge can be economical. However, the design of the preset floating platform is to refer to the hydrological data such as the flow direction of the water. According to the geographical attributes of the channel, the cross-sectional area in the vertical direction of the surface is generally minimized. Reduce the impact of the water flow on the floating platform, so that the impact of the water flow can be reduced. The method is to minimize the thickness of the preset floating platform and the streamline type when designing. At the same time, increase the preset width of the floating platform to increase the pair. Stable control of the floating platform. If the sea water is deep, it is also considered to be more consistent by connecting a plurality of preset floating body caps.
桥基与浮台采用硬连接或软连接， 如硬连接可以将桥基直接浇灌在浮台 上。 浮台的形状可以有很多种， 如方型、 长方型， 也可以设计成宽薄型。 由于 桥梁设计要求安全耐用， 预设的浮体承台设计在参考经济性的同时， 要求首先 注意结构稳定， 浮体材料和缆绳及其他部件要耐海水盐碱腐蚀和生物分解。 桥梁设计和施工时， 可以尽量采用部件组合， 在岸上生产再在海洋上组装固 定， 这样可以节约大量施工成本。 The bridge base and the floating platform are hard or soft connected, such as a hard connection, which can directly pour the bridge base on the floating platform. The shape of the pontoon can be varied, such as square or rectangular, or it can be designed to be wide and thin. Due to the safety and durability of the bridge design, the preset floating platform is designed with reference to the economy. At the same time, it is required to pay attention to the structural stability. The floating material and cables and other components are resistant to seawater alkali corrosion and biodegradation. When designing and constructing bridges, it is possible to use component combinations as much as possible, and to build on shore and then assemble and fix on the ocean, which can save a lot of construction costs.
如图 1所示， 本发明跨海桥梁的构造中采用多级浮台结构， 如图中的多个 浮台 3， 浮台 3顶部支撑桥基 1 , 浮台 3的下部通过缆绳 2固定在海底。 As shown in FIG. 1, the structure of the sea-crossing bridge of the present invention adopts a multi-stage floating platform structure, such as a plurality of floating platforms 3 in the figure, the top of the floating platform 3 supports the bridge base 1, and the lower part of the floating platform 3 is fixed by the cable 2 seabed.
具体应用中， 如在韩国釜山与日本富刚等地进行跨朝鲜海峡桥梁架设时， 由于朝鲜海峡部分深度达到 90米， 这样可以采用预设的浮体承台作为桥基架设 跨海大桥； 预设的浮体承台采用外表采用水泥箱浇注， 内部采用高强度聚苯乙 烯填充， 这样平均密度能低于 300千克 I立方， 产生 700千克力 I立方的浮 力， 从而抵消桥梁本身及桥面负荷， 这样就可以只在海底用钢缆多方位斜拉固 定预设的浮体承台即可， 不用花费巨资从海底建设实体桥墩， 或者施工不安全 的隧道。
In specific applications, such as the erection of bridges across the Korean Strait in Busan, South Korea and Fugang, Japan, since the depth of the Korean Strait reaches 90 meters, the preset pontoon cap can be used as a bridge to erect a bridge across the sea; The floating platform is made of cement tank and the interior is filled with high-strength polystyrene, so that the average density can be less than 300 kg I cubic, resulting in 700 kg of force I cubic buoyancy, thus offsetting the bridge itself and the bridge load. It is only necessary to fix the preset floating body platform by multi-directional oblique pulling of the steel cable on the seabed, without spending huge sums of money to construct a physical pier from the seabed or construct an unsafe tunnel.
Claims
1、 一种跨海桥梁的构造方法， 其特征是采用浮体结构拉沉于水面下产生 的浮力来抵消部分桥身和负荷， 并支撑桥基及桥身的重量， 浮体结构的平均密 度低于水。 1. A method for constructing a cross-sea bridge, characterized in that the floating force generated by the floating body structure under the water surface is used to offset part of the bridge body and the load, and the weight of the bridge base and the bridge body is supported, and the average density of the floating body structure is lower than water.
2、 根据权利要求 1所述跨海桥梁的构造方法， 其特征在于深海领域采用 二级或多级浮台结构。 2. A method of constructing a cross-sea bridge according to claim 1, characterized in that the deep sea area employs a two-stage or multi-stage floating platform structure.
3、 根据权利要求 1所述跨海桥梁的构造方法， 其特征在于浮体结构整体 呈台状浮台结构， 并通过缆绳或柱梁将浮台的固定于水底。 3. The method of constructing a sea-crossing bridge according to claim 1, wherein the floating body structure as a whole has a platform-like floating platform structure, and the floating platform is fixed to the bottom of the water by a cable or a column beam.
4、 根据权利要求 1、 2或 3所述跨海桥梁的构造方法， 其特征在于浮台 的表面采用耐海水盐碱腐蚀和生物分解的材料制成， 内部采用轻质材料， 浮台 的平均密度为水平均密度的 1/2— 1/10为宜。 4. The method for constructing a sea-crossing bridge according to claim 1, 2 or 3, characterized in that the surface of the floating platform is made of a material resistant to seawater salt alkali corrosion and biodegradation, and the interior is made of a lightweight material, the average of the floating platform The density is preferably 1/2 to 1/10 of the average density of the water.
5、 根据权利要求 4所述跨海桥梁的构造方法， 其特征在于通过减少浮台 的厚度， 增加浮台宽度， 减少浮台的平均密度。 A method of constructing a sea-crossing bridge according to claim 4, wherein the pontoon width is increased by reducing the thickness of the pontoon, and the average density of the pontoon is reduced.
6、 根据权利要求 4所述跨海桥梁的构造方法， 其特征在于浮体承台的外 形采用流线型， 以小水流的冲击力。 6. The method of constructing a sea-crossing bridge according to claim 4, characterized in that the outer shape of the floating platform is streamlined to impact the small water flow.
7、 根据权利要求 1所述跨海桥梁的构造方法， 其特征在于设计时尽量减 小浮台结构与桥面垂直方向的横截面积， 以减少水流对浮台的冲击力。 7. The method of constructing a sea-crossing bridge according to claim 1, characterized in that the cross-sectional area of the floating platform structure and the vertical direction of the bridge deck is minimized during design to reduce the impact of the water flow on the floating platform.
8、 根据权利要求 1所述跨海桥梁的构造方法， 其特征在于浮台的宽度超 过桥面以加强桥面稳定。 8. The method of constructing a sea-crossing bridge according to claim 1, wherein the width of the floating platform exceeds the bridge surface to enhance the stability of the bridge deck.
9、 根据权利要求 1所述跨海桥梁的构造方法， 其特征在于采用浮体连结 实现更加稳定。
9. The method of constructing a cross-sea bridge according to claim 1, characterized in that the use of a floating body connection is more stable.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610038344 CN1811066A (en) | 2006-02-17 | 2006-02-17 | Sea-crossing bridge structure |
| CN200610038344.7 | 2006-02-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2007093131A1 true WO2007093131A1 (en) | 2007-08-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2007/000576 WO2007093131A1 (en) | 2006-02-17 | 2007-02-16 | Construction method for sea-crossing bridge |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1811066A (en) |
| WO (1) | WO2007093131A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO20150509A1 (en) * | 2015-04-19 | 2016-10-20 | Roedstoel Oeystein | Floating bridge and platform built on anchored deep-flowing underwater foundation |
| CN114059437A (en) * | 2020-07-31 | 2022-02-18 | 李宽 | Light long-distance sea-crossing intelligent permanent railway and highway floating bridge with low manufacturing cost and short construction period |
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| CN2628577Y (en) * | 2003-04-30 | 2004-07-28 | 王仕禹 | Submerged floating bridge |
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| GB2135637A (en) * | 1983-02-21 | 1984-09-05 | Fayren Jose Marvo | Modular pontoon bridge |
| CN1259602A (en) * | 1999-01-06 | 2000-07-12 | 刘寄声 | Potoon bordge on sea not rocking with wave and its erection method |
| CN2390911Y (en) * | 1999-08-09 | 2000-08-09 | 林涛 | Marine submerged floating pontoon bridge |
| CN2628577Y (en) * | 2003-04-30 | 2004-07-28 | 王仕禹 | Submerged floating bridge |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO20150509A1 (en) * | 2015-04-19 | 2016-10-20 | Roedstoel Oeystein | Floating bridge and platform built on anchored deep-flowing underwater foundation |
| CN114059437A (en) * | 2020-07-31 | 2022-02-18 | 李宽 | Light long-distance sea-crossing intelligent permanent railway and highway floating bridge with low manufacturing cost and short construction period |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1811066A (en) | 2006-08-02 |
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