二、桥梁工程施工
1、 任务划分和施工力量布署
拟成立两个桥涵连队完成本段桥梁施工任务。桥涵一连承担茂湛铁路高架桥及该桥至K315+500内的桥涵的施工任务，桥涵二连负责其余路段的桥涵施工任务。 
施工力量布署详见《投入本工程的人员数量表》和《拟投入工程的施工机械设备表》
2、 钻孔灌注桩施工要点
本标段钻孔桩共有     延米，桩径有1.2m、1.6m两 种类型，采用循环钻机施工。钻孔、成桩施工方法和注意事项：
（1） 钻孔
固定好钻机，并检查钻机水平且钻头位置准确无误后，即可开始钻孔，在钻孔过程中要保持孔内水头高度及泥浆比重，随时检查孔的倾斜度，并及时纠正，施工中随时观察地质情况，当地质发生较大变化时，及时报告工程师，钻孔成孔后上报工程师验收并及时清孔。
（2） 安放钢筋笼和导管
钢筋笼在钢筋操作间集中下料，现场分节制作，用吊车吊入孔中安放焊接，接头采用搭接焊，注意钢筋笼位置和笼顶高程。导管安放前要进行导管试验，确保导管无漏水现象。
（3） 灌注砼
灌注前检查泥浆比重、孔深、沉淀均应符合要求后才灌注砼，砼由强制式拌合机拌和，小翻斗车运输，吊车配吊斗进行灌注。随时检查砼的均匀性、塌落度和导管埋置深度。
3、 墩台身、盖梁（台帽）等下部构造砼的施工要点
（1） 墩台身施工
2, bridge construction
1, the task force deployment and construction division
Bridge to be set up two companies to complete the task in this section of bridge construction. Mao-Zhanjiang railway bridge take the viaduct series and the K315 +500 Bridge to the bridge's construction tasks, responsible for the remaining sections of bridge and culvert bridge Erlian construction tasks.
Construction of power deployment see "into the project the number of personnel" and the "to be put into the project construction machinery and equipment list"
2 points of bored pile construction
The total linear meters Lot bored pile, pile diameter are 1.2m, 1.6m are two types of cyclic Rig. Drilling, pile construction method and precautions:
(1) Drilling
Fixed the rig, and check the drill bit location and the level of accuracy, you can start drilling, the drill hole of the process to maintain the proportion of head height and mud, at any time check the hole inclination, and promptly correct any construction observed geological conditions, when significant changes occur when the geological, timely reporting engineer, drilling engineer to report upon acceptance into the hole and timely clean hole.
(2) reinforcement cage and the catheter placed
Operation between the steel reinforcement cage centralized material, on-site production of sub-section, a crane into the Kongzhong An up welding, the joint use of lap welding, note the location and cage steel cage top elevation. Catheters were placed catheter before testing to ensure no leaking pipe.
(3) perfusion Concrete
Checked before perfusion mud weight, hole depth, precipitation should meet the requirements after the infusion of concrete, concrete mixing machine from the compulsory mixing, transport of small dump trucks, cranes were perfusion with skip. Always check the uniformity of concrete, slump and catheter embedded depth.
3, pier and abutment, cover Liang (Taiwan, cap) and so the lower part of the construction of structural concrete elements
(1) pier and abutment construction