Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention relates to an arched cable-stayed prestressed concrete continuous rigid frame bridge which comprises a box girder structure, a pier stud, a bearing platform and a pile foundation are sequentially arranged on the lower portion of the box girder structure, the box girder structure comprises an open web section and a solid web section, and the open web section comprises an upper chord box girder and a lower chord box girder. The solid web section comprises a mid-span solid web section, a mid-span closure section, a side-span solid web section, a side-span closure section and a side-span cast-in-place section, a stay cable is arranged between the pier column and the lower chord box girder, and the stay cable is tensioned and stressed at least once in the construction process. The upper chord box girder, the lower chord box girder, the midspan solid web section, the midspan closure section, the side span solid web section, the side span closure section and the side span cast-in-place section are all of hollow box type structures, the edge of the outer side of the lower chord box girder is of a parabola structure with an upward opening, and the edges of the outer sides of the midspan solid web section and the side span solid web section are of parabola structures with downward openings. According to the arched cable-stayed prestressed concrete continuous rigid frame bridge, the flexural rigidity of the bridge can be improved, beam body cracks and mid-span and long-term deflection are reduced, and the span capacity of the bridge is improved.
本发明涉及一种拱形斜拉预应力混凝土连续刚构桥，包括：箱梁结构，箱梁结构下部依次设置有墩柱、承台、桩基，箱梁结构包括空腹段、实腹段，空腹段包括上弦箱梁、下弦箱梁，实腹段包括中跨实腹段、中跨合龙段、边跨实腹段、边跨合龙段、边跨现浇段，墩柱与下弦箱梁之间设置有斜拉索，斜拉索在施工过程中进行不少于一次张拉受力，上弦箱梁、下弦箱梁、中跨实腹段、中跨合龙段、边跨实腹段、边跨合龙段、边跨现浇段均为中空箱型结构，下弦箱梁外侧边缘呈开口向上的抛物线构造，中跨实腹段、边跨实腹段外侧边缘呈开口向下的抛物线构造；该拱形斜拉预应力混凝土连续刚构桥可提高桥梁的抗弯刚度，减少梁体裂缝和跨中长期挠度，提高桥梁跨越能力。
The invention relates to an arched cable-stayed prestressed concrete continuous rigid frame bridge which comprises a box girder structure, a pier stud, a bearing platform and a pile foundation are sequentially arranged on the lower portion of the box girder structure, the box girder structure comprises an open web section and a solid web section, and the open web section comprises an upper chord box girder and a lower chord box girder. The solid web section comprises a mid-span solid web section, a mid-span closure section, a side-span solid web section, a side-span closure section and a side-span cast-in-place section, a stay cable is arranged between the pier column and the lower chord box girder, and the stay cable is tensioned and stressed at least once in the construction process. The upper chord box girder, the lower chord box girder, the midspan solid web section, the midspan closure section, the side span solid web section, the side span closure section and the side span cast-in-place section are all of hollow box type structures, the edge of the outer side of the lower chord box girder is of a parabola structure with an upward opening, and the edges of the outer sides of the midspan solid web section and the side span solid web section are of parabola structures with downward openings. According to the arched cable-stayed prestressed concrete continuous rigid frame bridge, the flexural rigidity of the bridge can be improved, beam body cracks and mid-span and long-term deflection are reduced, and the span capacity of the bridge is improved.
本发明涉及一种拱形斜拉预应力混凝土连续刚构桥，包括：箱梁结构，箱梁结构下部依次设置有墩柱、承台、桩基，箱梁结构包括空腹段、实腹段，空腹段包括上弦箱梁、下弦箱梁，实腹段包括中跨实腹段、中跨合龙段、边跨实腹段、边跨合龙段、边跨现浇段，墩柱与下弦箱梁之间设置有斜拉索，斜拉索在施工过程中进行不少于一次张拉受力，上弦箱梁、下弦箱梁、中跨实腹段、中跨合龙段、边跨实腹段、边跨合龙段、边跨现浇段均为中空箱型结构，下弦箱梁外侧边缘呈开口向上的抛物线构造，中跨实腹段、边跨实腹段外侧边缘呈开口向下的抛物线构造；该拱形斜拉预应力混凝土连续刚构桥可提高桥梁的抗弯刚度，减少梁体裂缝和跨中长期挠度，提高桥梁跨越能力。
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